./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:33:57,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:33:57,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:33:57,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:33:57,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:33:57,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:33:57,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:33:57,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:33:57,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:33:57,268 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:33:57,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:33:57,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:33:57,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:33:57,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:33:57,270 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:33:57,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:33:57,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:33:57,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:33:57,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:33:57,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:33:57,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:33:57,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:33:57,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:33:57,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:33:57,272 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:33:57,273 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:33:57,273 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:33:57,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:33:57,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:33:57,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:33:57,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:33:57,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:33:57,274 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:33:57,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:33:57,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:33:57,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:33:57,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:33:57,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:33:57,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:33:57,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:33:57,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:33:57,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:33:57,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:33:57,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:33:57,277 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2024-10-24 23:33:57,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:33:57,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:33:57,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:33:57,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:33:57,520 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:33:57,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-10-24 23:33:58,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:33:59,059 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:33:59,059 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-10-24 23:33:59,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3541db5/2769de7aae4a45cc8a3767e28f494ca3/FLAG2967a873e [2024-10-24 23:33:59,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3541db5/2769de7aae4a45cc8a3767e28f494ca3 [2024-10-24 23:33:59,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:33:59,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:33:59,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:33:59,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:33:59,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:33:59,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b616615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59, skipping insertion in model container [2024-10-24 23:33:59,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,126 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:33:59,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:33:59,388 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:33:59,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:33:59,474 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:33:59,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59 WrapperNode [2024-10-24 23:33:59,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:33:59,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:33:59,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:33:59,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:33:59,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,517 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2024-10-24 23:33:59,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:33:59,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:33:59,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:33:59,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:33:59,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,532 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,549 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-10-24 23:33:59,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:33:59,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:33:59,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:33:59,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:33:59,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (1/1) ... [2024-10-24 23:33:59,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:33:59,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:33:59,616 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) [2024-10-24 23:33:59,619 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 [2024-10-24 23:33:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:33:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:33:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 23:33:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 23:33:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:33:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:33:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 23:33:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 23:33:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 23:33:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:33:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 23:33:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 23:33:59,665 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 23:33:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 23:33:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:33:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:33:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 23:33:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 23:33:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 23:33:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:33:59,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:33:59,668 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:33:59,791 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:33:59,792 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:34:00,049 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:34:00,050 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:34:00,173 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:34:00,173 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-24 23:34:00,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:34:00 BoogieIcfgContainer [2024-10-24 23:34:00,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:34:00,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:34:00,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:34:00,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:34:00,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:33:59" (1/3) ... [2024-10-24 23:34:00,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e08bbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:34:00, skipping insertion in model container [2024-10-24 23:34:00,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:33:59" (2/3) ... [2024-10-24 23:34:00,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e08bbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:34:00, skipping insertion in model container [2024-10-24 23:34:00,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:34:00" (3/3) ... [2024-10-24 23:34:00,182 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2024-10-24 23:34:00,194 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:34:00,194 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-24 23:34:00,194 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:34:00,225 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 23:34:00,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 62 transitions, 131 flow [2024-10-24 23:34:00,274 INFO L124 PetriNetUnfolderBase]: 11/78 cut-off events. [2024-10-24 23:34:00,274 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 23:34:00,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 78 events. 11/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 233 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-10-24 23:34:00,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 62 transitions, 131 flow [2024-10-24 23:34:00,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 61 transitions, 129 flow [2024-10-24 23:34:00,285 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:34:00,290 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;@4de8d41e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:34:00,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-24 23:34:00,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:34:00,294 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-24 23:34:00,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:34:00,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:00,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:34:00,295 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:34:00,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash 339234515, now seen corresponding path program 1 times [2024-10-24 23:34:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:00,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133674521] [2024-10-24 23:34:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:00,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:00,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133674521] [2024-10-24 23:34:00,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133674521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:00,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:00,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:34:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411611912] [2024-10-24 23:34:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:00,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:00,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:00,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:00,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:00,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-10-24 23:34:00,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-24 23:34:00,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:00,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-10-24 23:34:00,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:00,733 INFO L124 PetriNetUnfolderBase]: 182/508 cut-off events. [2024-10-24 23:34:00,734 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 23:34:00,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 508 events. 182/508 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2534 event pairs, 26 based on Foata normal form. 88/540 useless extension candidates. Maximal degree in co-relation 877. Up to 282 conditions per place. [2024-10-24 23:34:00,739 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 52 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-10-24 23:34:00,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 275 flow [2024-10-24 23:34:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:34:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:34:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-10-24 23:34:00,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6653225806451613 [2024-10-24 23:34:00,750 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 129 flow. Second operand 4 states and 165 transitions. [2024-10-24 23:34:00,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 275 flow [2024-10-24 23:34:00,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:34:00,758 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 119 flow [2024-10-24 23:34:00,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-10-24 23:34:00,766 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-10-24 23:34:00,767 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 119 flow [2024-10-24 23:34:00,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-24 23:34:00,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:00,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 23:34:00,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:34:00,767 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:34:00,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1926335722, now seen corresponding path program 1 times [2024-10-24 23:34:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:00,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276869080] [2024-10-24 23:34:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:00,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:00,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:00,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276869080] [2024-10-24 23:34:00,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276869080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:00,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:00,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:34:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495240549] [2024-10-24 23:34:00,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:00,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:00,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:00,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-10-24 23:34:00,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-24 23:34:00,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:00,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-10-24 23:34:00,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:01,018 INFO L124 PetriNetUnfolderBase]: 169/520 cut-off events. [2024-10-24 23:34:01,018 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-24 23:34:01,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 520 events. 169/520 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2497 event pairs, 66 based on Foata normal form. 15/504 useless extension candidates. Maximal degree in co-relation 909. Up to 326 conditions per place. [2024-10-24 23:34:01,023 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 53 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-10-24 23:34:01,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 283 flow [2024-10-24 23:34:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:34:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:34:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-10-24 23:34:01,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2024-10-24 23:34:01,026 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 119 flow. Second operand 4 states and 146 transitions. [2024-10-24 23:34:01,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 283 flow [2024-10-24 23:34:01,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 275 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:34:01,029 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 119 flow [2024-10-24 23:34:01,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-10-24 23:34:01,030 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-10-24 23:34:01,031 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 119 flow [2024-10-24 23:34:01,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-24 23:34:01,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:01,031 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:01,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:34:01,032 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-24 23:34:01,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:01,034 INFO L85 PathProgramCache]: Analyzing trace with hash 77735140, now seen corresponding path program 1 times [2024-10-24 23:34:01,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:01,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440758817] [2024-10-24 23:34:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:01,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:34:01,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:34:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:34:01,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:34:01,073 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 23:34:01,074 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-24 23:34:01,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-24 23:34:01,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-24 23:34:01,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-24 23:34:01,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-24 23:34:01,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-24 23:34:01,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-24 23:34:01,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-24 23:34:01,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-24 23:34:01,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-24 23:34:01,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-24 23:34:01,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-24 23:34:01,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-24 23:34:01,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:34:01,080 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-24 23:34:01,081 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 23:34:01,081 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 23:34:01,100 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 23:34:01,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 96 transitions, 208 flow [2024-10-24 23:34:01,133 INFO L124 PetriNetUnfolderBase]: 21/147 cut-off events. [2024-10-24 23:34:01,134 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 23:34:01,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 147 events. 21/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 540 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2024-10-24 23:34:01,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 96 transitions, 208 flow [2024-10-24 23:34:01,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 96 transitions, 208 flow [2024-10-24 23:34:01,136 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:34:01,137 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;@4de8d41e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:34:01,137 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-24 23:34:01,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:34:01,139 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-24 23:34:01,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:34:01,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:01,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:34:01,139 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:01,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash 430878547, now seen corresponding path program 1 times [2024-10-24 23:34:01,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:01,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455080035] [2024-10-24 23:34:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:01,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455080035] [2024-10-24 23:34:01,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455080035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:01,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:01,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:34:01,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878613829] [2024-10-24 23:34:01,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:01,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:01,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:01,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:01,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-10-24 23:34:01,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 208 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) [2024-10-24 23:34:01,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:01,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-10-24 23:34:01,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:02,008 INFO L124 PetriNetUnfolderBase]: 5541/10437 cut-off events. [2024-10-24 23:34:02,009 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-10-24 23:34:02,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19289 conditions, 10437 events. 5541/10437 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 80383 event pairs, 936 based on Foata normal form. 2148/11665 useless extension candidates. Maximal degree in co-relation 12950. Up to 6033 conditions per place. [2024-10-24 23:34:02,060 INFO L140 encePairwiseOnDemand]: 77/96 looper letters, 94 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-10-24 23:34:02,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 478 flow [2024-10-24 23:34:02,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:34:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:34:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-10-24 23:34:02,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2024-10-24 23:34:02,063 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 208 flow. Second operand 4 states and 277 transitions. [2024-10-24 23:34:02,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 478 flow [2024-10-24 23:34:02,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:34:02,068 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 186 flow [2024-10-24 23:34:02,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-10-24 23:34:02,068 INFO L277 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2024-10-24 23:34:02,069 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 186 flow [2024-10-24 23:34:02,069 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) [2024-10-24 23:34:02,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:02,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 23:34:02,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:34:02,069 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:02,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash 472333514, now seen corresponding path program 1 times [2024-10-24 23:34:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:02,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577356536] [2024-10-24 23:34:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:02,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:02,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577356536] [2024-10-24 23:34:02,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577356536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:34:02,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237941487] [2024-10-24 23:34:02,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:02,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:02,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-10-24 23:34:02,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 186 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) [2024-10-24 23:34:02,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:02,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-10-24 23:34:02,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:02,952 INFO L124 PetriNetUnfolderBase]: 5527/11642 cut-off events. [2024-10-24 23:34:02,953 INFO L125 PetriNetUnfolderBase]: For 655/655 co-relation queries the response was YES. [2024-10-24 23:34:02,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21091 conditions, 11642 events. 5527/11642 cut-off events. For 655/655 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 97218 event pairs, 2600 based on Foata normal form. 15/10959 useless extension candidates. Maximal degree in co-relation 1452. Up to 8697 conditions per place. [2024-10-24 23:34:03,012 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 72 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2024-10-24 23:34:03,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 398 flow [2024-10-24 23:34:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:34:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:34:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-10-24 23:34:03,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5651041666666666 [2024-10-24 23:34:03,016 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 186 flow. Second operand 4 states and 217 transitions. [2024-10-24 23:34:03,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 398 flow [2024-10-24 23:34:03,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:34:03,022 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 200 flow [2024-10-24 23:34:03,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-10-24 23:34:03,023 INFO L277 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2024-10-24 23:34:03,024 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 200 flow [2024-10-24 23:34:03,024 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) [2024-10-24 23:34:03,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:03,024 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:03,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:34:03,025 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:03,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:03,025 INFO L85 PathProgramCache]: Analyzing trace with hash -249697834, now seen corresponding path program 1 times [2024-10-24 23:34:03,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:03,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636110052] [2024-10-24 23:34:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:03,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:03,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:03,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636110052] [2024-10-24 23:34:03,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636110052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:03,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:03,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:34:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042437949] [2024-10-24 23:34:03,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:03,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:03,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:03,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:03,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 96 [2024-10-24 23:34:03,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-24 23:34:03,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:03,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 96 [2024-10-24 23:34:03,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:04,164 INFO L124 PetriNetUnfolderBase]: 7335/15582 cut-off events. [2024-10-24 23:34:04,164 INFO L125 PetriNetUnfolderBase]: For 578/792 co-relation queries the response was YES. [2024-10-24 23:34:04,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27915 conditions, 15582 events. 7335/15582 cut-off events. For 578/792 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 138225 event pairs, 2168 based on Foata normal form. 259/14667 useless extension candidates. Maximal degree in co-relation 27802. Up to 7118 conditions per place. [2024-10-24 23:34:04,235 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 132 selfloop transitions, 12 changer transitions 0/180 dead transitions. [2024-10-24 23:34:04,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 180 transitions, 722 flow [2024-10-24 23:34:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:34:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:34:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2024-10-24 23:34:04,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-10-24 23:34:04,240 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 200 flow. Second operand 5 states and 325 transitions. [2024-10-24 23:34:04,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 180 transitions, 722 flow [2024-10-24 23:34:04,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 180 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:34:04,246 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 292 flow [2024-10-24 23:34:04,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2024-10-24 23:34:04,247 INFO L277 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2024-10-24 23:34:04,247 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 292 flow [2024-10-24 23:34:04,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-24 23:34:04,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:04,247 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 23:34:04,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:34:04,248 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:04,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:04,248 INFO L85 PathProgramCache]: Analyzing trace with hash 948595171, now seen corresponding path program 1 times [2024-10-24 23:34:04,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:04,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789109615] [2024-10-24 23:34:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:04,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:34:04,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:04,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789109615] [2024-10-24 23:34:04,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789109615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:04,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:04,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:34:04,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755882103] [2024-10-24 23:34:04,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:04,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:04,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:04,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:04,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:04,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 96 [2024-10-24 23:34:04,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-10-24 23:34:04,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:04,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 96 [2024-10-24 23:34:04,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:05,453 INFO L124 PetriNetUnfolderBase]: 7271/14442 cut-off events. [2024-10-24 23:34:05,454 INFO L125 PetriNetUnfolderBase]: For 4389/4394 co-relation queries the response was YES. [2024-10-24 23:34:05,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30133 conditions, 14442 events. 7271/14442 cut-off events. For 4389/4394 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 121335 event pairs, 2005 based on Foata normal form. 0/13637 useless extension candidates. Maximal degree in co-relation 22661. Up to 10013 conditions per place. [2024-10-24 23:34:05,520 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 115 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-10-24 23:34:05,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 720 flow [2024-10-24 23:34:05,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:34:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:34:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-10-24 23:34:05,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6223958333333334 [2024-10-24 23:34:05,522 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 292 flow. Second operand 4 states and 239 transitions. [2024-10-24 23:34:05,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 720 flow [2024-10-24 23:34:05,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 720 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:34:05,531 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 308 flow [2024-10-24 23:34:05,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2024-10-24 23:34:05,531 INFO L277 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2024-10-24 23:34:05,532 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 308 flow [2024-10-24 23:34:05,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-10-24 23:34:05,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:05,532 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-24 23:34:05,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:34:05,534 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-24 23:34:05,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1066906557, now seen corresponding path program 1 times [2024-10-24 23:34:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:05,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102003336] [2024-10-24 23:34:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:05,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:34:05,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:34:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:34:05,569 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:34:05,570 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 23:34:05,570 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-24 23:34:05,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-24 23:34:05,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-24 23:34:05,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-24 23:34:05,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-24 23:34:05,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-24 23:34:05,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-24 23:34:05,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-24 23:34:05,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-24 23:34:05,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-24 23:34:05,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-24 23:34:05,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-24 23:34:05,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-24 23:34:05,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-24 23:34:05,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-24 23:34:05,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-24 23:34:05,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-24 23:34:05,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:34:05,575 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-24 23:34:05,576 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 23:34:05,576 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 23:34:05,606 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:34:05,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 130 transitions, 287 flow [2024-10-24 23:34:05,743 INFO L124 PetriNetUnfolderBase]: 34/235 cut-off events. [2024-10-24 23:34:05,743 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 23:34:05,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 235 events. 34/235 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 986 event pairs, 1 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 162. Up to 12 conditions per place. [2024-10-24 23:34:05,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 130 transitions, 287 flow [2024-10-24 23:34:05,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 130 transitions, 287 flow [2024-10-24 23:34:05,747 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:34:05,749 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;@4de8d41e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:34:05,753 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-24 23:34:05,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:34:05,754 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-24 23:34:05,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:34:05,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:05,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:34:05,755 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:34:05,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:05,755 INFO L85 PathProgramCache]: Analyzing trace with hash 554968949, now seen corresponding path program 1 times [2024-10-24 23:34:05,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284251727] [2024-10-24 23:34:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:05,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:05,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284251727] [2024-10-24 23:34:05,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284251727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:05,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:05,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:34:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044743518] [2024-10-24 23:34:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:05,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:05,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 130 [2024-10-24 23:34:05,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 130 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:05,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:05,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 130 [2024-10-24 23:34:05,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:18,305 INFO L124 PetriNetUnfolderBase]: 121220/195109 cut-off events. [2024-10-24 23:34:18,306 INFO L125 PetriNetUnfolderBase]: For 2009/2009 co-relation queries the response was YES. [2024-10-24 23:34:18,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364050 conditions, 195109 events. 121220/195109 cut-off events. For 2009/2009 co-relation queries the response was YES. Maximal size of possible extension queue 3778. Compared 1844940 event pairs, 20717 based on Foata normal form. 43359/223985 useless extension candidates. Maximal degree in co-relation 168087. Up to 115300 conditions per place. [2024-10-24 23:34:19,356 INFO L140 encePairwiseOnDemand]: 105/130 looper letters, 135 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2024-10-24 23:34:19,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 187 transitions, 679 flow [2024-10-24 23:34:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:34:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:34:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-10-24 23:34:19,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7461538461538462 [2024-10-24 23:34:19,359 INFO L175 Difference]: Start difference. First operand has 114 places, 130 transitions, 287 flow. Second operand 4 states and 388 transitions. [2024-10-24 23:34:19,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 187 transitions, 679 flow [2024-10-24 23:34:19,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 187 transitions, 679 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:34:19,364 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 253 flow [2024-10-24 23:34:19,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2024-10-24 23:34:19,365 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2024-10-24 23:34:19,365 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 253 flow [2024-10-24 23:34:19,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:19,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:19,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 23:34:19,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:34:19,366 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:34:19,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash 24168810, now seen corresponding path program 1 times [2024-10-24 23:34:19,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:19,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272992265] [2024-10-24 23:34:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:19,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:19,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272992265] [2024-10-24 23:34:19,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272992265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:19,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:19,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:34:19,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501669183] [2024-10-24 23:34:19,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:19,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:19,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:19,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:19,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:19,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 130 [2024-10-24 23:34:19,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:19,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:19,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 130 [2024-10-24 23:34:19,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:34:33,538 INFO L124 PetriNetUnfolderBase]: 121206/220276 cut-off events. [2024-10-24 23:34:33,538 INFO L125 PetriNetUnfolderBase]: For 10864/10864 co-relation queries the response was YES. [2024-10-24 23:34:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398046 conditions, 220276 events. 121206/220276 cut-off events. For 10864/10864 co-relation queries the response was YES. Maximal size of possible extension queue 4376. Compared 2365475 event pairs, 98316 based on Foata normal form. 15/207437 useless extension candidates. Maximal degree in co-relation 114524. Up to 167356 conditions per place. [2024-10-24 23:34:34,894 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 87 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-10-24 23:34:34,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 138 transitions, 495 flow [2024-10-24 23:34:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:34:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:34:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2024-10-24 23:34:34,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2024-10-24 23:34:34,896 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 253 flow. Second operand 4 states and 284 transitions. [2024-10-24 23:34:34,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 138 transitions, 495 flow [2024-10-24 23:34:34,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 138 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:34:34,913 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 267 flow [2024-10-24 23:34:34,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2024-10-24 23:34:34,914 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 4 predicate places. [2024-10-24 23:34:34,914 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 267 flow [2024-10-24 23:34:34,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:34:34,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:34:34,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:34:34,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:34:34,915 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:34:34,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:34:34,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1916149558, now seen corresponding path program 1 times [2024-10-24 23:34:34,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:34:34,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97443368] [2024-10-24 23:34:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:34:34,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:34:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:34:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:34:34,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:34:34,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97443368] [2024-10-24 23:34:34,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97443368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:34:34,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:34:34,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:34:34,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525287470] [2024-10-24 23:34:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:34:34,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:34:34,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:34:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:34:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:34:35,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 130 [2024-10-24 23:34:35,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2024-10-24 23:34:35,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:34:35,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 130 [2024-10-24 23:34:35,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand