./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:21:03,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:21:04,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:21:04,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:21:04,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:21:04,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:21:04,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:21:04,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:21:04,056 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:21:04,056 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:21:04,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:21:04,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:21:04,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:21:04,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:21:04,056 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:21:04,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:21:04,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:21:04,056 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:21:04,058 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:21:04,059 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:21:04,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:21:04,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:21:04,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:21:04,060 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2025-03-04 15:21:04,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:21:04,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:21:04,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:21:04,282 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:21:04,283 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:21:04,283 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2025-03-04 15:21:05,415 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a0e3c2c/548a8a1e6c954f0088288a5c4db95582/FLAG288a17cb1 [2025-03-04 15:21:05,678 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:21:05,683 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2025-03-04 15:21:05,700 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a0e3c2c/548a8a1e6c954f0088288a5c4db95582/FLAG288a17cb1 [2025-03-04 15:21:05,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a0e3c2c/548a8a1e6c954f0088288a5c4db95582 [2025-03-04 15:21:05,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:21:05,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:21:05,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:21:05,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:21:05,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:21:05,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:21:05" (1/1) ... [2025-03-04 15:21:05,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff613a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:05, skipping insertion in model container [2025-03-04 15:21:05,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:21:05" (1/1) ... [2025-03-04 15:21:06,014 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:21:06,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:21:06,266 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:21:06,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:21:06,342 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:21:06,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06 WrapperNode [2025-03-04 15:21:06,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:21:06,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:21:06,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:21:06,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:21:06,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,376 INFO L138 Inliner]: procedures = 173, calls = 42, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 268 [2025-03-04 15:21:06,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:21:06,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:21:06,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:21:06,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:21:06,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,407 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 5, 5, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0]. The 2 writes are split as follows [0, 1, 0, 0, 1]. [2025-03-04 15:21:06,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,414 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:21:06,419 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:21:06,419 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:21:06,419 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:21:06,424 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (1/1) ... [2025-03-04 15:21:06,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:21:06,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:21:06,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:21:06,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:21:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:21:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:21:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 15:21:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 15:21:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 15:21:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-03-04 15:21:06,472 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-03-04 15:21:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:21:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:21:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 15:21:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 15:21:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 15:21:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 15:21:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:21:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 15:21:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-03-04 15:21:06,474 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-03-04 15:21:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 15:21:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:21:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:21:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 15:21:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 15:21:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 15:21:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 15:21:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:21:06,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:21:06,476 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:21:06,588 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:21:06,590 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:21:06,869 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L714: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-03-04 15:21:06,869 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2025-03-04 15:21:06,869 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-2: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-03-04 15:21:06,871 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-3: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2025-03-04 15:21:06,872 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:21:06,872 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:21:07,056 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:21:07,057 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:21:07,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:21:07 BoogieIcfgContainer [2025-03-04 15:21:07,057 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:21:07,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:21:07,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:21:07,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:21:07,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:21:05" (1/3) ... [2025-03-04 15:21:07,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3b937a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:21:07, skipping insertion in model container [2025-03-04 15:21:07,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:21:06" (2/3) ... [2025-03-04 15:21:07,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3b937a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:21:07, skipping insertion in model container [2025-03-04 15:21:07,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:21:07" (3/3) ... [2025-03-04 15:21:07,064 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2025-03-04 15:21:07,076 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:21:07,077 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_04-munge_racefree.i that has 3 procedures, 96 locations, 1 initial locations, 12 loop locations, and 16 error locations. [2025-03-04 15:21:07,078 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:21:07,134 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-04 15:21:07,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 123 transitions, 266 flow [2025-03-04 15:21:07,243 INFO L124 PetriNetUnfolderBase]: 41/217 cut-off events. [2025-03-04 15:21:07,246 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-04 15:21:07,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 217 events. 41/217 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1030 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2025-03-04 15:21:07,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 123 transitions, 266 flow [2025-03-04 15:21:07,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 123 transitions, 266 flow [2025-03-04 15:21:07,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:21:07,268 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;@43cc9889, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:21:07,268 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-03-04 15:21:07,275 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:21:07,275 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-03-04 15:21:07,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:21:07,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:21:07,276 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:21:07,276 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:21:07,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:21:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash 625357208, now seen corresponding path program 1 times [2025-03-04 15:21:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:21:07,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815582327] [2025-03-04 15:21:07,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:21:07,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:21:07,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:21:07,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:21:07,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:21:07,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:21:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:21:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:21:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815582327] [2025-03-04 15:21:07,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815582327] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:21:07,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:21:07,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:21:07,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304136213] [2025-03-04 15:21:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:21:07,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:21:07,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:21:07,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:21:07,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:21:07,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 123 [2025-03-04 15:21:07,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 123 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:21:07,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:21:07,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 123 [2025-03-04 15:21:07,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:21:08,550 INFO L124 PetriNetUnfolderBase]: 5693/11584 cut-off events. [2025-03-04 15:21:08,550 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2025-03-04 15:21:08,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20524 conditions, 11584 events. 5693/11584 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 96890 event pairs, 2520 based on Foata normal form. 1644/11270 useless extension candidates. Maximal degree in co-relation 19671. Up to 8759 conditions per place. [2025-03-04 15:21:08,611 INFO L140 encePairwiseOnDemand]: 97/123 looper letters, 90 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2025-03-04 15:21:08,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 138 transitions, 482 flow [2025-03-04 15:21:08,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:21:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:21:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2025-03-04 15:21:08,623 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2025-03-04 15:21:08,625 INFO L175 Difference]: Start difference. First operand has 102 places, 123 transitions, 266 flow. Second operand 4 states and 316 transitions. [2025-03-04 15:21:08,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 138 transitions, 482 flow [2025-03-04 15:21:08,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 138 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:21:08,634 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 232 flow [2025-03-04 15:21:08,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2025-03-04 15:21:08,639 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 2 predicate places. [2025-03-04 15:21:08,639 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 232 flow [2025-03-04 15:21:08,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:21:08,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:21:08,639 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:21:08,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:21:08,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:21:08,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:21:08,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1550996711, now seen corresponding path program 1 times [2025-03-04 15:21:08,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:21:08,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427080568] [2025-03-04 15:21:08,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:21:08,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:21:08,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:21:08,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:21:08,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:21:08,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:21:08,695 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 15:21:08,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:21:08,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:21:08,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:21:08,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 15:21:08,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 15:21:08,736 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 15:21:08,737 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2025-03-04 15:21:08,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2025-03-04 15:21:08,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2025-03-04 15:21:08,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2025-03-04 15:21:08,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2025-03-04 15:21:08,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2025-03-04 15:21:08,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2025-03-04 15:21:08,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2025-03-04 15:21:08,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2025-03-04 15:21:08,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2025-03-04 15:21:08,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2025-03-04 15:21:08,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2025-03-04 15:21:08,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2025-03-04 15:21:08,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2025-03-04 15:21:08,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2025-03-04 15:21:08,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2025-03-04 15:21:08,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2025-03-04 15:21:08,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2025-03-04 15:21:08,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2025-03-04 15:21:08,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2025-03-04 15:21:08,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2025-03-04 15:21:08,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2025-03-04 15:21:08,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2025-03-04 15:21:08,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2025-03-04 15:21:08,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2025-03-04 15:21:08,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2025-03-04 15:21:08,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:21:08,743 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 15:21:08,746 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 15:21:08,746 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 15:21:08,805 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-03-04 15:21:08,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 215 transitions, 474 flow [2025-03-04 15:21:08,874 INFO L124 PetriNetUnfolderBase]: 145/699 cut-off events. [2025-03-04 15:21:08,874 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2025-03-04 15:21:08,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 699 events. 145/699 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4516 event pairs, 2 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 432. Up to 32 conditions per place. [2025-03-04 15:21:08,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 215 transitions, 474 flow [2025-03-04 15:21:08,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 215 transitions, 474 flow [2025-03-04 15:21:08,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:21:08,890 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;@43cc9889, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:21:08,890 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2025-03-04 15:21:08,893 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:21:08,893 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-03-04 15:21:08,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:21:08,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:21:08,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:21:08,894 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2025-03-04 15:21:08,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:21:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash 828707780, now seen corresponding path program 1 times [2025-03-04 15:21:08,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:21:08,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262836586] [2025-03-04 15:21:08,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:21:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:21:08,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:21:08,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:21:08,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:21:08,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:21:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:21:09,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:21:09,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262836586] [2025-03-04 15:21:09,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262836586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:21:09,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:21:09,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:21:09,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674365636] [2025-03-04 15:21:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:21:09,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:21:09,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:21:09,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:21:09,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:21:09,007 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 215 [2025-03-04 15:21:09,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 215 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:21:09,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:21:09,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 215 [2025-03-04 15:21:09,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand