./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:38:31,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:38:31,726 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:38:31,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:38:31,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:38:31,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:38:31,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:38:31,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:38:31,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:38:31,748 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:38:31,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:38:31,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:38:31,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:38:31,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:38:31,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:38:31,749 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:38:31,750 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:38:31,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:38:31,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:38:31,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:38:31,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:38:31,751 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 -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2025-03-17 19:38:31,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:38:31,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:38:31,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:38:31,981 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:38:31,981 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:38:31,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2025-03-17 19:38:33,064 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08920cf29/2ec91cdb67f44a9e97cc3024d3122a2c/FLAGb4efa0873 [2025-03-17 19:38:33,372 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:38:33,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2025-03-17 19:38:33,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08920cf29/2ec91cdb67f44a9e97cc3024d3122a2c/FLAGb4efa0873 [2025-03-17 19:38:33,644 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08920cf29/2ec91cdb67f44a9e97cc3024d3122a2c [2025-03-17 19:38:33,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:38:33,648 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:38:33,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:38:33,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:38:33,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:38:33,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:38:33" (1/1) ... [2025-03-17 19:38:33,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e16a5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:33, skipping insertion in model container [2025-03-17 19:38:33,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:38:33" (1/1) ... [2025-03-17 19:38:33,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:38:33,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:38:33,950 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:38:33,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:38:34,019 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:38:34,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34 WrapperNode [2025-03-17 19:38:34,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:38:34,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:38:34,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:38:34,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:38:34,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,048 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2025-03-17 19:38:34,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:38:34,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:38:34,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:38:34,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:38:34,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,075 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2025-03-17 19:38:34,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,075 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,080 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:38:34,085 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:38:34,085 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:38:34,085 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:38:34,085 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (1/1) ... [2025-03-17 19:38:34,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:38:34,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:38:34,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:38:34,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 19:38:34,126 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:38:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:38:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:38:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:38:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:38:34,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:38:34,128 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:38:34,216 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:38:34,217 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:38:34,347 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L706: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-17 19:38:34,348 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L706-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-17 19:38:34,396 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:38:34,396 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:38:34,502 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:38:34,502 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:38:34,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:38:34 BoogieIcfgContainer [2025-03-17 19:38:34,503 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:38:34,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:38:34,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:38:34,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:38:34,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:38:33" (1/3) ... [2025-03-17 19:38:34,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e0d342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:38:34, skipping insertion in model container [2025-03-17 19:38:34,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:38:34" (2/3) ... [2025-03-17 19:38:34,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e0d342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:38:34, skipping insertion in model container [2025-03-17 19:38:34,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:38:34" (3/3) ... [2025-03-17 19:38:34,514 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2025-03-17 19:38:34,526 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:38:34,528 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_41-trylock_racefree.i that has 2 procedures, 50 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2025-03-17 19:38:34,528 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:38:34,565 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 19:38:34,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 61 transitions, 129 flow [2025-03-17 19:38:34,630 INFO L124 PetriNetUnfolderBase]: 15/78 cut-off events. [2025-03-17 19:38:34,632 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:38:34,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 78 events. 15/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 242 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2025-03-17 19:38:34,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 61 transitions, 129 flow [2025-03-17 19:38:34,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 60 transitions, 127 flow [2025-03-17 19:38:34,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:38:34,656 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;@792c6b32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:38:34,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-17 19:38:34,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:38:34,662 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-03-17 19:38:34,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:38:34,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:34,663 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:38:34,663 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)] === [2025-03-17 19:38:34,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:34,667 INFO L85 PathProgramCache]: Analyzing trace with hash 293908586, now seen corresponding path program 1 times [2025-03-17 19:38:34,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:34,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680517946] [2025-03-17 19:38:34,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:34,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:34,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:38:34,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:38:34,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:34,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:34,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:34,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680517946] [2025-03-17 19:38:34,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680517946] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:34,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:34,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754015032] [2025-03-17 19:38:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:34,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:34,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:34,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:34,940 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 61 [2025-03-17 19:38:34,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 60 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:34,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:34,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 61 [2025-03-17 19:38:34,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:35,111 INFO L124 PetriNetUnfolderBase]: 155/392 cut-off events. [2025-03-17 19:38:35,111 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:38:35,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 392 events. 155/392 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1835 event pairs, 0 based on Foata normal form. 66/415 useless extension candidates. Maximal degree in co-relation 694. Up to 290 conditions per place. [2025-03-17 19:38:35,116 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 48 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2025-03-17 19:38:35,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 253 flow [2025-03-17 19:38:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:38:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:38:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-03-17 19:38:35,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6516393442622951 [2025-03-17 19:38:35,127 INFO L175 Difference]: Start difference. First operand has 53 places, 60 transitions, 127 flow. Second operand 4 states and 159 transitions. [2025-03-17 19:38:35,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 253 flow [2025-03-17 19:38:35,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 253 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:38:35,132 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 115 flow [2025-03-17 19:38:35,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2025-03-17 19:38:35,135 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2025-03-17 19:38:35,135 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 115 flow [2025-03-17 19:38:35,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:35,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:35,136 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:35,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:38:35,136 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-17 19:38:35,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1607419370, now seen corresponding path program 1 times [2025-03-17 19:38:35,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:35,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161564261] [2025-03-17 19:38:35,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:35,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:38:35,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:38:35,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:35,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:38:35,162 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:38:35,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:38:35,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:38:35,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:35,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:38:35,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:38:35,183 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:38:35,185 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-17 19:38:35,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-03-17 19:38:35,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-03-17 19:38:35,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-03-17 19:38:35,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-03-17 19:38:35,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-03-17 19:38:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-03-17 19:38:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-03-17 19:38:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-03-17 19:38:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-03-17 19:38:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-03-17 19:38:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-03-17 19:38:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-03-17 19:38:35,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:38:35,187 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 19:38:35,189 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:38:35,189 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:38:35,207 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:38:35,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 93 transitions, 202 flow [2025-03-17 19:38:35,224 INFO L124 PetriNetUnfolderBase]: 27/146 cut-off events. [2025-03-17 19:38:35,224 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 19:38:35,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 146 events. 27/146 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 522 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 91. Up to 9 conditions per place. [2025-03-17 19:38:35,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 93 transitions, 202 flow [2025-03-17 19:38:35,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 93 transitions, 202 flow [2025-03-17 19:38:35,227 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:38:35,228 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;@792c6b32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:38:35,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-17 19:38:35,231 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:38:35,231 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-03-17 19:38:35,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:38:35,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:35,231 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:38:35,231 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)] === [2025-03-17 19:38:35,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash 382687781, now seen corresponding path program 1 times [2025-03-17 19:38:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109171922] [2025-03-17 19:38:35,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:35,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:35,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:38:35,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:38:35,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:35,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:35,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:35,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109171922] [2025-03-17 19:38:35,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109171922] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:35,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:35,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114031997] [2025-03-17 19:38:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:35,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:35,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:35,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:35,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:35,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 93 [2025-03-17 19:38:35,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:35,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:35,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 93 [2025-03-17 19:38:35,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:36,105 INFO L124 PetriNetUnfolderBase]: 4459/8940 cut-off events. [2025-03-17 19:38:36,106 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2025-03-17 19:38:36,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16005 conditions, 8940 events. 4459/8940 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 70411 event pairs, 2432 based on Foata normal form. 1341/9272 useless extension candidates. Maximal degree in co-relation 3443. Up to 6961 conditions per place. [2025-03-17 19:38:36,162 INFO L140 encePairwiseOnDemand]: 72/93 looper letters, 66 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2025-03-17 19:38:36,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 103 transitions, 360 flow [2025-03-17 19:38:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:38:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:38:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2025-03-17 19:38:36,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6317204301075269 [2025-03-17 19:38:36,166 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 202 flow. Second operand 4 states and 235 transitions. [2025-03-17 19:38:36,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 103 transitions, 360 flow [2025-03-17 19:38:36,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:38:36,169 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 196 flow [2025-03-17 19:38:36,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2025-03-17 19:38:36,169 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 5 predicate places. [2025-03-17 19:38:36,169 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 196 flow [2025-03-17 19:38:36,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:36,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:36,170 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:36,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:38:36,170 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-17 19:38:36,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:36,171 INFO L85 PathProgramCache]: Analyzing trace with hash 677945640, now seen corresponding path program 1 times [2025-03-17 19:38:36,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:36,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115437584] [2025-03-17 19:38:36,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:36,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:36,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:38:36,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:38:36,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:36,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:36,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115437584] [2025-03-17 19:38:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115437584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:36,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:36,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869015092] [2025-03-17 19:38:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:36,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:36,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:36,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:36,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2025-03-17 19:38:36,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:36,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:36,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2025-03-17 19:38:36,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:37,203 INFO L124 PetriNetUnfolderBase]: 5885/12099 cut-off events. [2025-03-17 19:38:37,203 INFO L125 PetriNetUnfolderBase]: For 456/791 co-relation queries the response was YES. [2025-03-17 19:38:37,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21937 conditions, 12099 events. 5885/12099 cut-off events. For 456/791 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 103338 event pairs, 1542 based on Foata normal form. 232/11145 useless extension candidates. Maximal degree in co-relation 21837. Up to 6030 conditions per place. [2025-03-17 19:38:37,280 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 126 selfloop transitions, 12 changer transitions 0/174 dead transitions. [2025-03-17 19:38:37,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 174 transitions, 700 flow [2025-03-17 19:38:37,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:38:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:38:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2025-03-17 19:38:37,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6752688172043011 [2025-03-17 19:38:37,282 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 196 flow. Second operand 5 states and 314 transitions. [2025-03-17 19:38:37,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 174 transitions, 700 flow [2025-03-17 19:38:37,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 174 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:38:37,286 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 288 flow [2025-03-17 19:38:37,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2025-03-17 19:38:37,287 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 12 predicate places. [2025-03-17 19:38:37,287 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 288 flow [2025-03-17 19:38:37,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:37,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:37,287 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:37,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:38:37,287 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-17 19:38:37,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:37,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1220111489, now seen corresponding path program 1 times [2025-03-17 19:38:37,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:37,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728399134] [2025-03-17 19:38:37,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:37,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:38:37,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:38:37,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:37,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:37,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:37,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728399134] [2025-03-17 19:38:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728399134] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:37,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:38:37,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339808074] [2025-03-17 19:38:37,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:37,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:38:37,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:37,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:38:37,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:38:37,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 93 [2025-03-17 19:38:37,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:37,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:37,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 93 [2025-03-17 19:38:37,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:38,408 INFO L124 PetriNetUnfolderBase]: 5974/11806 cut-off events. [2025-03-17 19:38:38,409 INFO L125 PetriNetUnfolderBase]: For 4029/4029 co-relation queries the response was YES. [2025-03-17 19:38:38,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25028 conditions, 11806 events. 5974/11806 cut-off events. For 4029/4029 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 98434 event pairs, 1171 based on Foata normal form. 152/10927 useless extension candidates. Maximal degree in co-relation 19490. Up to 7417 conditions per place. [2025-03-17 19:38:38,541 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 127 selfloop transitions, 6 changer transitions 0/167 dead transitions. [2025-03-17 19:38:38,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 167 transitions, 788 flow [2025-03-17 19:38:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:38:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:38:38,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 317 transitions. [2025-03-17 19:38:38,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.568100358422939 [2025-03-17 19:38:38,543 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 288 flow. Second operand 6 states and 317 transitions. [2025-03-17 19:38:38,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 167 transitions, 788 flow [2025-03-17 19:38:38,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 167 transitions, 788 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:38:38,554 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 296 flow [2025-03-17 19:38:38,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2025-03-17 19:38:38,557 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 16 predicate places. [2025-03-17 19:38:38,557 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 296 flow [2025-03-17 19:38:38,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:38,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:38,558 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 19:38:38,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:38:38,558 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)] === [2025-03-17 19:38:38,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash 831249809, now seen corresponding path program 1 times [2025-03-17 19:38:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:38,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977568227] [2025-03-17 19:38:38,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:38,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:38,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:38:38,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:38:38,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:38,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:38,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:38,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977568227] [2025-03-17 19:38:38,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977568227] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:38,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:38,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:38:38,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581143476] [2025-03-17 19:38:38,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:38,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:38,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:38,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:38,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:38,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 93 [2025-03-17 19:38:38,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:38,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:38,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 93 [2025-03-17 19:38:38,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:39,262 INFO L124 PetriNetUnfolderBase]: 5711/11049 cut-off events. [2025-03-17 19:38:39,263 INFO L125 PetriNetUnfolderBase]: For 4570/4570 co-relation queries the response was YES. [2025-03-17 19:38:39,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24098 conditions, 11049 events. 5711/11049 cut-off events. For 4570/4570 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 89555 event pairs, 1397 based on Foata normal form. 160/10428 useless extension candidates. Maximal degree in co-relation 18629. Up to 7895 conditions per place. [2025-03-17 19:38:39,302 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 104 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2025-03-17 19:38:39,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 144 transitions, 686 flow [2025-03-17 19:38:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:38:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:38:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2025-03-17 19:38:39,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2025-03-17 19:38:39,303 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 296 flow. Second operand 4 states and 224 transitions. [2025-03-17 19:38:39,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 144 transitions, 686 flow [2025-03-17 19:38:39,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 144 transitions, 670 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-17 19:38:39,310 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 296 flow [2025-03-17 19:38:39,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2025-03-17 19:38:39,310 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 14 predicate places. [2025-03-17 19:38:39,310 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 296 flow [2025-03-17 19:38:39,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:39,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:39,311 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-03-17 19:38:39,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:38:39,311 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)] === [2025-03-17 19:38:39,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash -32838724, now seen corresponding path program 1 times [2025-03-17 19:38:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:39,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793719597] [2025-03-17 19:38:39,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:39,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:39,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:38:39,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:38:39,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:39,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:38:39,321 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:38:39,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:38:39,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:38:39,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:39,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:38:39,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:38:39,331 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:38:39,331 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-03-17 19:38:39,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-03-17 19:38:39,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:38:39,332 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-17 19:38:39,333 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:38:39,333 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 19:38:39,356 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:38:39,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 125 transitions, 277 flow [2025-03-17 19:38:39,370 INFO L124 PetriNetUnfolderBase]: 42/233 cut-off events. [2025-03-17 19:38:39,370 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-17 19:38:39,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 233 events. 42/233 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 957 event pairs, 1 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 161. Up to 12 conditions per place. [2025-03-17 19:38:39,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 125 transitions, 277 flow [2025-03-17 19:38:39,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 125 transitions, 277 flow [2025-03-17 19:38:39,373 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:38:39,374 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;@792c6b32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:38:39,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-17 19:38:39,375 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:38:39,376 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-03-17 19:38:39,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:38:39,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:39,377 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:38:39,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-17 19:38:39,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:39,378 INFO L85 PathProgramCache]: Analyzing trace with hash 502004736, now seen corresponding path program 1 times [2025-03-17 19:38:39,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:39,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034358698] [2025-03-17 19:38:39,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:39,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:39,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:38:39,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:38:39,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:39,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:39,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:39,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034358698] [2025-03-17 19:38:39,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034358698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:39,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:39,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052806246] [2025-03-17 19:38:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:39,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:39,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:39,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:39,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 125 [2025-03-17 19:38:39,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 125 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:39,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:39,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 125 [2025-03-17 19:38:39,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:47,017 INFO L124 PetriNetUnfolderBase]: 83236/148672 cut-off events. [2025-03-17 19:38:47,018 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2025-03-17 19:38:47,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264564 conditions, 148672 events. 83236/148672 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 3310. Compared 1539698 event pairs, 52900 based on Foata normal form. 23797/157587 useless extension candidates. Maximal degree in co-relation 17240. Up to 114730 conditions per place. [2025-03-17 19:38:47,856 INFO L140 encePairwiseOnDemand]: 98/125 looper letters, 79 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2025-03-17 19:38:47,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 129 transitions, 449 flow [2025-03-17 19:38:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:38:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:38:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2025-03-17 19:38:47,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.612 [2025-03-17 19:38:47,857 INFO L175 Difference]: Start difference. First operand has 107 places, 125 transitions, 277 flow. Second operand 4 states and 306 transitions. [2025-03-17 19:38:47,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 129 transitions, 449 flow [2025-03-17 19:38:47,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 129 transitions, 449 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:38:47,861 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 259 flow [2025-03-17 19:38:47,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=259, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2025-03-17 19:38:47,861 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 5 predicate places. [2025-03-17 19:38:47,862 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 259 flow [2025-03-17 19:38:47,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:47,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:38:47,862 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:38:47,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:38:47,862 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-17 19:38:47,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:38:47,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1805513917, now seen corresponding path program 1 times [2025-03-17 19:38:47,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:38:47,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795032758] [2025-03-17 19:38:47,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:38:47,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:38:47,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:38:47,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:38:47,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:38:47,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:38:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:38:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:38:47,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795032758] [2025-03-17 19:38:47,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795032758] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:38:47,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:38:47,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:38:47,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433226771] [2025-03-17 19:38:47,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:38:47,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:38:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:38:47,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:38:47,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:38:47,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 125 [2025-03-17 19:38:47,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:38:47,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:38:47,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 125 [2025-03-17 19:38:47,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:38:59,390 INFO L124 PetriNetUnfolderBase]: 119831/205127 cut-off events. [2025-03-17 19:38:59,390 INFO L125 PetriNetUnfolderBase]: For 7138/11653 co-relation queries the response was YES. [2025-03-17 19:38:59,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377859 conditions, 205127 events. 119831/205127 cut-off events. For 7138/11653 co-relation queries the response was YES. Maximal size of possible extension queue 4708. Compared 2108237 event pairs, 40368 based on Foata normal form. 3004/190561 useless extension candidates. Maximal degree in co-relation 377758. Up to 111308 conditions per place. [2025-03-17 19:39:00,496 INFO L140 encePairwiseOnDemand]: 114/125 looper letters, 178 selfloop transitions, 16 changer transitions 0/243 dead transitions. [2025-03-17 19:39:00,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 243 transitions, 991 flow [2025-03-17 19:39:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:39:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:39:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2025-03-17 19:39:00,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.696 [2025-03-17 19:39:00,497 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 259 flow. Second operand 5 states and 435 transitions. [2025-03-17 19:39:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 243 transitions, 991 flow [2025-03-17 19:39:00,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 243 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:39:00,504 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 385 flow [2025-03-17 19:39:00,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2025-03-17 19:39:00,504 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 12 predicate places. [2025-03-17 19:39:00,504 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 385 flow [2025-03-17 19:39:00,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:00,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:39:00,505 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:39:00,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:39:00,505 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-17 19:39:00,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:39:00,505 INFO L85 PathProgramCache]: Analyzing trace with hash -88570785, now seen corresponding path program 1 times [2025-03-17 19:39:00,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:39:00,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265197750] [2025-03-17 19:39:00,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:39:00,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:39:00,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:39:00,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:39:00,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:39:00,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:39:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:39:00,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:39:00,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265197750] [2025-03-17 19:39:00,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265197750] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:39:00,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:39:00,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:39:00,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697814793] [2025-03-17 19:39:00,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:39:00,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:39:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:39:00,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:39:00,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:39:00,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 125 [2025-03-17 19:39:00,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:39:00,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:39:00,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 125 [2025-03-17 19:39:00,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand