./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_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 b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:17:29,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:17:29,278 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:17:29,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:17:29,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:17:29,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:17:29,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:17:29,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:17:29,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:17:29,322 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:17:29,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:17:29,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:17:29,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:17:29,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:17:29,328 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:17:29,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:17:29,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:17:29,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:17:29,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:17:29,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:17:29,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:17:29,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:17:29,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:17:29,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:17:29,331 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:17:29,332 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:17:29,332 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:17:29,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:17:29,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:17:29,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:17:29,333 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:17:29,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:17:29,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:17:29,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:17:29,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:17:29,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:17:29,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:17:29,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:17:29,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:17:29,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:17:29,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:17:29,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:17:29,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:17:29,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:17:29,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 [2024-11-10 22:17:29,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:17:29,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:17:29,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:17:29,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:17:29,627 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:17:29,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2024-11-10 22:17:31,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:17:31,401 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:17:31,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2024-11-10 22:17:31,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb085b53/2291953353f34760ba1cc5426dfd59d1/FLAGaa6bd374d [2024-11-10 22:17:31,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb085b53/2291953353f34760ba1cc5426dfd59d1 [2024-11-10 22:17:31,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:17:31,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:17:31,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:31,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:17:31,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:17:31,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:31" (1/1) ... [2024-11-10 22:17:31,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0705a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:31, skipping insertion in model container [2024-11-10 22:17:31,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:31" (1/1) ... [2024-11-10 22:17:31,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:17:32,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:32,203 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:17:32,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:32,310 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:17:32,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32 WrapperNode [2024-11-10 22:17:32,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:32,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:32,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:17:32,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:17:32,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,367 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 134 [2024-11-10 22:17:32,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:32,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:17:32,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:17:32,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:17:32,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,408 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-10 22:17:32,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,418 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:17:32,428 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:17:32,428 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:17:32,428 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:17:32,429 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (1/1) ... [2024-11-10 22:17:32,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:17:32,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:32,471 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) [2024-11-10 22:17:32,474 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 [2024-11-10 22:17:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:17:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:17:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:17:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:17:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:17:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:17:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:17:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:17:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:17:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:17:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:17:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 22:17:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 22:17:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:17:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:17:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:17:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:17:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:17:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:17:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:17:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:17:32,536 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:17:32,729 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:17:32,731 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:17:32,976 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L707: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 22:17:32,976 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L707-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 22:17:33,023 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:17:33,023 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:17:33,374 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:17:33,375 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:17:33,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:17:33 BoogieIcfgContainer [2024-11-10 22:17:33,377 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:17:33,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:17:33,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:17:33,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:17:33,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:17:31" (1/3) ... [2024-11-10 22:17:33,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec404c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:17:33, skipping insertion in model container [2024-11-10 22:17:33,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:32" (2/3) ... [2024-11-10 22:17:33,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec404c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:17:33, skipping insertion in model container [2024-11-10 22:17:33,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:17:33" (3/3) ... [2024-11-10 22:17:33,388 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2024-11-10 22:17:33,409 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:17:33,409 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 22:17:33,409 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:17:33,468 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 22:17:33,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 69 transitions, 145 flow [2024-11-10 22:17:33,564 INFO L124 PetriNetUnfolderBase]: 15/91 cut-off events. [2024-11-10 22:17:33,565 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:17:33,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 15/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 276 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2024-11-10 22:17:33,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 69 transitions, 145 flow [2024-11-10 22:17:33,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 68 transitions, 143 flow [2024-11-10 22:17:33,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:17:33,591 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;@378bb827, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:17:33,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-10 22:17:33,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:17:33,600 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-10 22:17:33,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:33,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:33,601 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:17:33,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:17:33,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash -153186237, now seen corresponding path program 1 times [2024-11-10 22:17:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:33,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958938640] [2024-11-10 22:17:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:33,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:34,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958938640] [2024-11-10 22:17:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958938640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:34,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:34,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:17:34,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269818227] [2024-11-10 22:17:34,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:34,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:34,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 69 [2024-11-10 22:17:34,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2024-11-10 22:17:34,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:34,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 69 [2024-11-10 22:17:34,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:34,388 INFO L124 PetriNetUnfolderBase]: 143/445 cut-off events. [2024-11-10 22:17:34,388 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:17:34,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 445 events. 143/445 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2263 event pairs, 0 based on Foata normal form. 145/573 useless extension candidates. Maximal degree in co-relation 734. Up to 278 conditions per place. [2024-11-10 22:17:34,395 INFO L140 encePairwiseOnDemand]: 53/69 looper letters, 47 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-10 22:17:34,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 265 flow [2024-11-10 22:17:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-10 22:17:34,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2024-11-10 22:17:34,414 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 143 flow. Second operand 4 states and 192 transitions. [2024-11-10 22:17:34,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 265 flow [2024-11-10 22:17:34,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:17:34,423 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 129 flow [2024-11-10 22:17:34,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-10 22:17:34,430 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2024-11-10 22:17:34,430 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 129 flow [2024-11-10 22:17:34,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2024-11-10 22:17:34,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:34,431 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:34,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:17:34,432 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-10 22:17:34,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:34,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1231341129, now seen corresponding path program 1 times [2024-11-10 22:17:34,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:34,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518180543] [2024-11-10 22:17:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:17:34,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:17:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:17:34,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:17:34,590 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:17:34,592 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-10 22:17:34,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-10 22:17:34,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-10 22:17:34,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-10 22:17:34,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-10 22:17:34,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-10 22:17:34,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-10 22:17:34,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-10 22:17:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-10 22:17:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-10 22:17:34,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-10 22:17:34,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-10 22:17:34,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-10 22:17:34,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:17:34,601 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 22:17:34,605 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:17:34,607 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 22:17:34,643 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:17:34,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 104 transitions, 224 flow [2024-11-10 22:17:34,710 INFO L124 PetriNetUnfolderBase]: 28/170 cut-off events. [2024-11-10 22:17:34,710 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 22:17:34,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 170 events. 28/170 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 611 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2024-11-10 22:17:34,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 104 transitions, 224 flow [2024-11-10 22:17:34,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 104 transitions, 224 flow [2024-11-10 22:17:34,722 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:17:34,723 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;@378bb827, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:17:34,723 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-10 22:17:34,741 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:17:34,741 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-10 22:17:34,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:34,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:34,741 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:17:34,742 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:17:34,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1371442396, now seen corresponding path program 1 times [2024-11-10 22:17:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:34,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650821730] [2024-11-10 22:17:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:34,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:34,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:34,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650821730] [2024-11-10 22:17:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650821730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:34,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:17:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660887402] [2024-11-10 22:17:34,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:34,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:34,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-10 22:17:34,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 104 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:34,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:34,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-10 22:17:34,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:36,105 INFO L124 PetriNetUnfolderBase]: 4303/9700 cut-off events. [2024-11-10 22:17:36,105 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-10 22:17:36,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16609 conditions, 9700 events. 4303/9700 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 85987 event pairs, 2024 based on Foata normal form. 3030/11943 useless extension candidates. Maximal degree in co-relation 1325. Up to 6805 conditions per place. [2024-11-10 22:17:36,180 INFO L140 encePairwiseOnDemand]: 82/104 looper letters, 65 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-11-10 22:17:36,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 113 transitions, 378 flow [2024-11-10 22:17:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-11-10 22:17:36,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2024-11-10 22:17:36,187 INFO L175 Difference]: Start difference. First operand has 91 places, 104 transitions, 224 flow. Second operand 4 states and 280 transitions. [2024-11-10 22:17:36,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 113 transitions, 378 flow [2024-11-10 22:17:36,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 113 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:17:36,192 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 216 flow [2024-11-10 22:17:36,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-11-10 22:17:36,193 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2024-11-10 22:17:36,194 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 216 flow [2024-11-10 22:17:36,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:36,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:36,194 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:36,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:17:36,195 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:17:36,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:36,196 INFO L85 PathProgramCache]: Analyzing trace with hash 523954890, now seen corresponding path program 1 times [2024-11-10 22:17:36,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:36,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945114888] [2024-11-10 22:17:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:36,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:36,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:36,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945114888] [2024-11-10 22:17:36,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945114888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:36,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374646492] [2024-11-10 22:17:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:36,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:36,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:36,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:36,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:17:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:36,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:17:36,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:36,600 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:36,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374646492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:36,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:17:36,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:17:36,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835620601] [2024-11-10 22:17:36,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:36,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:17:36,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:36,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:17:36,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:17:36,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-10 22:17:36,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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) [2024-11-10 22:17:36,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:36,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-10 22:17:36,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:37,592 INFO L124 PetriNetUnfolderBase]: 4039/8544 cut-off events. [2024-11-10 22:17:37,593 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-11-10 22:17:37,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15685 conditions, 8544 events. 4039/8544 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 72228 event pairs, 372 based on Foata normal form. 144/8325 useless extension candidates. Maximal degree in co-relation 1303. Up to 4012 conditions per place. [2024-11-10 22:17:37,647 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 105 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-11-10 22:17:37,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 156 transitions, 568 flow [2024-11-10 22:17:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:17:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:17:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 382 transitions. [2024-11-10 22:17:37,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6121794871794872 [2024-11-10 22:17:37,650 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 216 flow. Second operand 6 states and 382 transitions. [2024-11-10 22:17:37,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 156 transitions, 568 flow [2024-11-10 22:17:37,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 156 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:37,656 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 222 flow [2024-11-10 22:17:37,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2024-11-10 22:17:37,659 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2024-11-10 22:17:37,659 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 222 flow [2024-11-10 22:17:37,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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) [2024-11-10 22:17:37,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:37,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:37,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:17:37,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:37,864 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:17:37,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash 971117969, now seen corresponding path program 1 times [2024-11-10 22:17:37,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:37,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544986554] [2024-11-10 22:17:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:37,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544986554] [2024-11-10 22:17:37,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544986554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:37,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:37,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:17:38,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291721982] [2024-11-10 22:17:38,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:38,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:38,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:38,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:38,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:38,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 104 [2024-11-10 22:17:38,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:38,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:38,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 104 [2024-11-10 22:17:38,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:39,277 INFO L124 PetriNetUnfolderBase]: 5414/11808 cut-off events. [2024-11-10 22:17:39,278 INFO L125 PetriNetUnfolderBase]: For 767/964 co-relation queries the response was YES. [2024-11-10 22:17:39,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20994 conditions, 11808 events. 5414/11808 cut-off events. For 767/964 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 106960 event pairs, 1602 based on Foata normal form. 196/11134 useless extension candidates. Maximal degree in co-relation 17146. Up to 4102 conditions per place. [2024-11-10 22:17:39,339 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 114 selfloop transitions, 14 changer transitions 0/176 dead transitions. [2024-11-10 22:17:39,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 176 transitions, 694 flow [2024-11-10 22:17:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:17:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:17:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2024-11-10 22:17:39,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7057692307692308 [2024-11-10 22:17:39,343 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 222 flow. Second operand 5 states and 367 transitions. [2024-11-10 22:17:39,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 176 transitions, 694 flow [2024-11-10 22:17:39,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 176 transitions, 686 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:17:39,350 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 322 flow [2024-11-10 22:17:39,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2024-11-10 22:17:39,351 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2024-11-10 22:17:39,351 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 322 flow [2024-11-10 22:17:39,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:39,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:39,352 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:17:39,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:17:39,352 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:17:39,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash -937267156, now seen corresponding path program 1 times [2024-11-10 22:17:39,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:39,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503349707] [2024-11-10 22:17:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:17:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503349707] [2024-11-10 22:17:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503349707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:39,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:39,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:39,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493927068] [2024-11-10 22:17:39,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:39,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:39,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:39,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:39,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-10 22:17:39,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-11-10 22:17:39,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:39,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-10 22:17:39,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:40,801 INFO L124 PetriNetUnfolderBase]: 5871/12576 cut-off events. [2024-11-10 22:17:40,802 INFO L125 PetriNetUnfolderBase]: For 5656/5888 co-relation queries the response was YES. [2024-11-10 22:17:40,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26311 conditions, 12576 events. 5871/12576 cut-off events. For 5656/5888 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 113035 event pairs, 1284 based on Foata normal form. 204/12498 useless extension candidates. Maximal degree in co-relation 20760. Up to 7964 conditions per place. [2024-11-10 22:17:40,888 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 107 selfloop transitions, 6 changer transitions 0/160 dead transitions. [2024-11-10 22:17:40,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 160 transitions, 742 flow [2024-11-10 22:17:40,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-11-10 22:17:40,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6418269230769231 [2024-11-10 22:17:40,890 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 322 flow. Second operand 4 states and 267 transitions. [2024-11-10 22:17:40,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 160 transitions, 742 flow [2024-11-10 22:17:40,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 160 transitions, 738 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:40,901 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 334 flow [2024-11-10 22:17:40,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=334, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2024-11-10 22:17:40,902 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 15 predicate places. [2024-11-10 22:17:40,902 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 334 flow [2024-11-10 22:17:40,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-11-10 22:17:40,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:40,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:40,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:17:40,903 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:17:40,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 39886472, now seen corresponding path program 1 times [2024-11-10 22:17:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741069000] [2024-11-10 22:17:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:40,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:40,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:40,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741069000] [2024-11-10 22:17:40,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741069000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:40,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:40,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:17:40,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448422884] [2024-11-10 22:17:40,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:40,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:40,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:40,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:40,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 104 [2024-11-10 22:17:40,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:40,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:40,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 104 [2024-11-10 22:17:40,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:42,267 INFO L124 PetriNetUnfolderBase]: 5709/12765 cut-off events. [2024-11-10 22:17:42,267 INFO L125 PetriNetUnfolderBase]: For 6558/6596 co-relation queries the response was YES. [2024-11-10 22:17:42,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26296 conditions, 12765 events. 5709/12765 cut-off events. For 6558/6596 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 120224 event pairs, 1426 based on Foata normal form. 212/12448 useless extension candidates. Maximal degree in co-relation 21944. Up to 5733 conditions per place. [2024-11-10 22:17:42,360 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 116 selfloop transitions, 19 changer transitions 0/182 dead transitions. [2024-11-10 22:17:42,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 182 transitions, 860 flow [2024-11-10 22:17:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:17:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:17:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 365 transitions. [2024-11-10 22:17:42,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7019230769230769 [2024-11-10 22:17:42,362 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 334 flow. Second operand 5 states and 365 transitions. [2024-11-10 22:17:42,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 182 transitions, 860 flow [2024-11-10 22:17:42,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 182 transitions, 844 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:42,372 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 443 flow [2024-11-10 22:17:42,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-11-10 22:17:42,373 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 19 predicate places. [2024-11-10 22:17:42,373 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 443 flow [2024-11-10 22:17:42,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:42,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:42,374 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-10 22:17:42,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:17:42,374 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-10 22:17:42,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:42,374 INFO L85 PathProgramCache]: Analyzing trace with hash -542941327, now seen corresponding path program 1 times [2024-11-10 22:17:42,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:42,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590858532] [2024-11-10 22:17:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:42,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:17:42,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:17:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:17:42,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:17:42,421 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:17:42,421 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-10 22:17:42,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-10 22:17:42,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-10 22:17:42,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-10 22:17:42,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-10 22:17:42,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-10 22:17:42,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-10 22:17:42,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-10 22:17:42,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-10 22:17:42,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-10 22:17:42,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-10 22:17:42,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-10 22:17:42,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-10 22:17:42,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-10 22:17:42,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-10 22:17:42,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-10 22:17:42,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-10 22:17:42,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:17:42,425 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-10 22:17:42,426 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:17:42,426 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 22:17:42,454 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:17:42,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 139 transitions, 305 flow [2024-11-10 22:17:42,495 INFO L124 PetriNetUnfolderBase]: 46/274 cut-off events. [2024-11-10 22:17:42,496 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 22:17:42,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 274 events. 46/274 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1091 event pairs, 1 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 185. Up to 16 conditions per place. [2024-11-10 22:17:42,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 139 transitions, 305 flow [2024-11-10 22:17:42,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 139 transitions, 305 flow [2024-11-10 22:17:42,503 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:17:42,504 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;@378bb827, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:17:42,504 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-10 22:17:42,510 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:17:42,511 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-10 22:17:42,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:42,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:42,511 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:17:42,511 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:17:42,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1554277595, now seen corresponding path program 1 times [2024-11-10 22:17:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:42,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457492092] [2024-11-10 22:17:42,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:42,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:42,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457492092] [2024-11-10 22:17:42,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457492092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:42,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:42,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:17:42,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645159184] [2024-11-10 22:17:42,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:42,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:42,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:42,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:42,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:42,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2024-11-10 22:17:42,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 139 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2024-11-10 22:17:42,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:42,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2024-11-10 22:17:42,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:54,131 INFO L124 PetriNetUnfolderBase]: 81352/151063 cut-off events. [2024-11-10 22:17:54,131 INFO L125 PetriNetUnfolderBase]: For 1719/1719 co-relation queries the response was YES. [2024-11-10 22:17:54,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265071 conditions, 151063 events. 81352/151063 cut-off events. For 1719/1719 co-relation queries the response was YES. Maximal size of possible extension queue 3326. Compared 1639730 event pairs, 78580 based on Foata normal form. 51794/191896 useless extension candidates. Maximal degree in co-relation 135928. Up to 112846 conditions per place. [2024-11-10 22:17:55,190 INFO L140 encePairwiseOnDemand]: 111/139 looper letters, 78 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2024-11-10 22:17:55,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 142 transitions, 473 flow [2024-11-10 22:17:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2024-11-10 22:17:55,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6528776978417267 [2024-11-10 22:17:55,193 INFO L175 Difference]: Start difference. First operand has 121 places, 139 transitions, 305 flow. Second operand 4 states and 363 transitions. [2024-11-10 22:17:55,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 142 transitions, 473 flow [2024-11-10 22:17:55,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 142 transitions, 473 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:17:55,198 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 285 flow [2024-11-10 22:17:55,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2024-11-10 22:17:55,199 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 5 predicate places. [2024-11-10 22:17:55,199 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 285 flow [2024-11-10 22:17:55,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2024-11-10 22:17:55,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:55,200 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:55,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:17:55,200 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:17:55,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2081912332, now seen corresponding path program 1 times [2024-11-10 22:17:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:55,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589119976] [2024-11-10 22:17:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:55,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:55,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:55,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589119976] [2024-11-10 22:17:55,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589119976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:55,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212795833] [2024-11-10 22:17:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:55,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:55,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:55,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:55,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:17:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:55,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:17:55,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:55,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212795833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:55,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:17:55,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:17:55,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291982663] [2024-11-10 22:17:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:55,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:17:55,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:17:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:17:55,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2024-11-10 22:17:55,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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) [2024-11-10 22:17:55,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:55,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2024-11-10 22:17:55,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:05,657 INFO L124 PetriNetUnfolderBase]: 76336/130702 cut-off events. [2024-11-10 22:18:05,657 INFO L125 PetriNetUnfolderBase]: For 7168/7168 co-relation queries the response was YES. [2024-11-10 22:18:05,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245374 conditions, 130702 events. 76336/130702 cut-off events. For 7168/7168 co-relation queries the response was YES. Maximal size of possible extension queue 2823. Compared 1308914 event pairs, 17756 based on Foata normal form. 1872/127460 useless extension candidates. Maximal degree in co-relation 224745. Up to 66277 conditions per place. [2024-11-10 22:18:06,379 INFO L140 encePairwiseOnDemand]: 134/139 looper letters, 140 selfloop transitions, 6 changer transitions 0/207 dead transitions. [2024-11-10 22:18:06,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 207 transitions, 751 flow [2024-11-10 22:18:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:18:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:18:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2024-11-10 22:18:06,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6151079136690647 [2024-11-10 22:18:06,382 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 285 flow. Second operand 6 states and 513 transitions. [2024-11-10 22:18:06,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 207 transitions, 751 flow [2024-11-10 22:18:06,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 207 transitions, 749 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:18:06,400 INFO L231 Difference]: Finished difference. Result has 129 places, 118 transitions, 291 flow [2024-11-10 22:18:06,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=129, PETRI_TRANSITIONS=118} [2024-11-10 22:18:06,401 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 8 predicate places. [2024-11-10 22:18:06,401 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 291 flow [2024-11-10 22:18:06,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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) [2024-11-10 22:18:06,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:06,402 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:06,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:18:06,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 22:18:06,603 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:18:06,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1988617714, now seen corresponding path program 1 times [2024-11-10 22:18:06,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:06,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322991370] [2024-11-10 22:18:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:06,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:06,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:06,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322991370] [2024-11-10 22:18:06,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322991370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:06,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:06,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:06,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923343390] [2024-11-10 22:18:06,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:06,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:06,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:06,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:06,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 139 [2024-11-10 22:18:06,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2024-11-10 22:18:06,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:06,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 139 [2024-11-10 22:18:06,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:20,834 INFO L124 PetriNetUnfolderBase]: 105235/191213 cut-off events. [2024-11-10 22:18:20,834 INFO L125 PetriNetUnfolderBase]: For 11785/14033 co-relation queries the response was YES. [2024-11-10 22:18:21,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344781 conditions, 191213 events. 105235/191213 cut-off events. For 11785/14033 co-relation queries the response was YES. Maximal size of possible extension queue 4563. Compared 2110842 event pairs, 35648 based on Foata normal form. 2680/184200 useless extension candidates. Maximal degree in co-relation 233957. Up to 93626 conditions per place. [2024-11-10 22:18:22,044 INFO L140 encePairwiseOnDemand]: 128/139 looper letters, 166 selfloop transitions, 16 changer transitions 0/246 dead transitions. [2024-11-10 22:18:22,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 246 transitions, 983 flow [2024-11-10 22:18:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:18:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:18:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2024-11-10 22:18:22,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7237410071942446 [2024-11-10 22:18:22,047 INFO L175 Difference]: Start difference. First operand has 129 places, 118 transitions, 291 flow. Second operand 5 states and 503 transitions. [2024-11-10 22:18:22,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 246 transitions, 983 flow [2024-11-10 22:18:22,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 246 transitions, 975 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:18:22,054 INFO L231 Difference]: Finished difference. Result has 134 places, 133 transitions, 413 flow [2024-11-10 22:18:22,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=134, PETRI_TRANSITIONS=133} [2024-11-10 22:18:22,055 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 13 predicate places. [2024-11-10 22:18:22,055 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 133 transitions, 413 flow [2024-11-10 22:18:22,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2024-11-10 22:18:22,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:22,056 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:18:22,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:18:22,056 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:18:22,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 114773429, now seen corresponding path program 1 times [2024-11-10 22:18:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:22,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904833177] [2024-11-10 22:18:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:22,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:18:22,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:22,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904833177] [2024-11-10 22:18:22,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904833177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:22,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:18:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166451463] [2024-11-10 22:18:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:22,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:22,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:22,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:22,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2024-11-10 22:18:22,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 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) [2024-11-10 22:18:22,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:22,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2024-11-10 22:18:22,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand