./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:56:04,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:56:04,153 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:56:04,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:56:04,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:56:04,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:56:04,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:56:04,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:56:04,203 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:56:04,204 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:56:04,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:56:04,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:56:04,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:56:04,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:56:04,208 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:56:04,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:56:04,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:56:04,209 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:56:04,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:56:04,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:56:04,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:56:04,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:56:04,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:56:04,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:56:04,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:56:04,215 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:56:04,216 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:56:04,216 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:56:04,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:56:04,216 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:56:04,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:56:04,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:56:04,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:56:04,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:56:04,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:56:04,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:56:04,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:56:04,218 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:56:04,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:56:04,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:56:04,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:56:04,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:56:04,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:56:04,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:56:04,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-10-14 23:56:04,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:56:04,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:56:04,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:56:04,543 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:56:04,543 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:56:04,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-10-14 23:56:06,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:56:06,403 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:56:06,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-10-14 23:56:06,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652edadd9/f3c0c4e21f374c97b302110272827034/FLAG981c99616 [2024-10-14 23:56:06,448 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652edadd9/f3c0c4e21f374c97b302110272827034 [2024-10-14 23:56:06,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:56:06,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:56:06,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:56:06,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:56:06,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:56:06,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:56:06" (1/1) ... [2024-10-14 23:56:06,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c69546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:06, skipping insertion in model container [2024-10-14 23:56:06,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:56:06" (1/1) ... [2024-10-14 23:56:06,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:56:07,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:56:07,089 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:56:07,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:56:07,248 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:56:07,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07 WrapperNode [2024-10-14 23:56:07,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:56:07,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:56:07,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:56:07,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:56:07,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,328 INFO L138 Inliner]: procedures = 272, calls = 50, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 313 [2024-10-14 23:56:07,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:56:07,329 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:56:07,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:56:07,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:56:07,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,369 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 2, 5, 16]. 64 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 8 writes are split as follows [0, 1, 0, 7]. [2024-10-14 23:56:07,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:56:07,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:56:07,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:56:07,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:56:07,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (1/1) ... [2024-10-14 23:56:07,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:56:07,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:56:07,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:56:07,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:56:07,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 23:56:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 23:56:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:56:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:56:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:56:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 23:56:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 23:56:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:56:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:56:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 23:56:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 23:56:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:56:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:56:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 23:56:07,497 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 23:56:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:56:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:56:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 23:56:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 23:56:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:56:07,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:56:07,501 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:56:07,692 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:56:07,694 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:56:08,157 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:56:08,158 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:56:08,392 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:56:08,392 INFO L314 CfgBuilder]: Removed 35 assume(true) statements. [2024-10-14 23:56:08,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:56:08 BoogieIcfgContainer [2024-10-14 23:56:08,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:56:08,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:56:08,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:56:08,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:56:08,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:56:06" (1/3) ... [2024-10-14 23:56:08,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfefd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:56:08, skipping insertion in model container [2024-10-14 23:56:08,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:07" (2/3) ... [2024-10-14 23:56:08,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfefd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:56:08, skipping insertion in model container [2024-10-14 23:56:08,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:56:08" (3/3) ... [2024-10-14 23:56:08,404 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-10-14 23:56:08,422 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:56:08,423 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-14 23:56:08,423 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:56:08,491 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 23:56:08,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 166 transitions, 339 flow [2024-10-14 23:56:08,633 INFO L124 PetriNetUnfolderBase]: 60/262 cut-off events. [2024-10-14 23:56:08,634 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:56:08,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 262 events. 60/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1294 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2024-10-14 23:56:08,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 166 transitions, 339 flow [2024-10-14 23:56:08,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 165 transitions, 337 flow [2024-10-14 23:56:08,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:56:08,666 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;@2adbcb31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:56:08,666 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-14 23:56:08,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:56:08,669 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:56:08,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:56:08,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:08,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:56:08,672 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-14 23:56:08,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:08,677 INFO L85 PathProgramCache]: Analyzing trace with hash 827928, now seen corresponding path program 1 times [2024-10-14 23:56:08,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696516461] [2024-10-14 23:56:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:08,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:09,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:09,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696516461] [2024-10-14 23:56:09,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696516461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:56:09,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:56:09,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:56:09,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207660487] [2024-10-14 23:56:09,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:56:09,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:56:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:09,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:56:09,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:56:09,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-14 23:56:09,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 165 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:09,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:09,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-14 23:56:09,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:09,753 INFO L124 PetriNetUnfolderBase]: 971/3020 cut-off events. [2024-10-14 23:56:09,753 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 23:56:09,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 3020 events. 971/3020 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24618 event pairs, 820 based on Foata normal form. 535/3140 useless extension candidates. Maximal degree in co-relation 4727. Up to 1850 conditions per place. [2024-10-14 23:56:09,784 INFO L140 encePairwiseOnDemand]: 130/166 looper letters, 70 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-10-14 23:56:09,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 137 transitions, 427 flow [2024-10-14 23:56:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:56:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:56:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2024-10-14 23:56:09,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5451807228915663 [2024-10-14 23:56:09,806 INFO L175 Difference]: Start difference. First operand has 132 places, 165 transitions, 337 flow. Second operand 4 states and 362 transitions. [2024-10-14 23:56:09,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 137 transitions, 427 flow [2024-10-14 23:56:09,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:56:09,850 INFO L231 Difference]: Finished difference. Result has 137 places, 137 transitions, 301 flow [2024-10-14 23:56:09,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=137, PETRI_TRANSITIONS=137} [2024-10-14 23:56:09,856 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 5 predicate places. [2024-10-14 23:56:09,858 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 137 transitions, 301 flow [2024-10-14 23:56:09,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:09,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:09,860 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:56:09,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:56:09,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-14 23:56:09,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1104075739, now seen corresponding path program 1 times [2024-10-14 23:56:09,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:09,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518150313] [2024-10-14 23:56:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:09,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:10,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518150313] [2024-10-14 23:56:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518150313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:56:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196946862] [2024-10-14 23:56:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:10,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:10,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:56:10,023 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) [2024-10-14 23:56:10,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:56:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:10,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:56:10,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:56:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:10,210 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:56:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196946862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:56:10,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:56:10,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:56:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486917618] [2024-10-14 23:56:10,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:56:10,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:56:10,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:10,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:56:10,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:56:10,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-14 23:56:10,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 137 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:10,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:10,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-14 23:56:10,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:10,794 INFO L124 PetriNetUnfolderBase]: 971/3019 cut-off events. [2024-10-14 23:56:10,794 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 23:56:10,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4887 conditions, 3019 events. 971/3019 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24617 event pairs, 820 based on Foata normal form. 1/2605 useless extension candidates. Maximal degree in co-relation 4869. Up to 1845 conditions per place. [2024-10-14 23:56:10,812 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 66 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2024-10-14 23:56:10,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 136 transitions, 441 flow [2024-10-14 23:56:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:56:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:56:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2024-10-14 23:56:10,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45883534136546184 [2024-10-14 23:56:10,816 INFO L175 Difference]: Start difference. First operand has 137 places, 137 transitions, 301 flow. Second operand 6 states and 457 transitions. [2024-10-14 23:56:10,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 136 transitions, 441 flow [2024-10-14 23:56:10,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 136 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:56:10,824 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 307 flow [2024-10-14 23:56:10,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2024-10-14 23:56:10,825 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 8 predicate places. [2024-10-14 23:56:10,825 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 307 flow [2024-10-14 23:56:10,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:10,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:10,827 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:56:10,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 23:56:11,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:11,029 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-14 23:56:11,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash 133391391, now seen corresponding path program 1 times [2024-10-14 23:56:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199737917] [2024-10-14 23:56:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:11,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:56:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199737917] [2024-10-14 23:56:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199737917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:56:11,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:56:11,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:56:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170067979] [2024-10-14 23:56:11,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:56:11,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:56:11,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:11,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:56:11,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:56:11,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-14 23:56:11,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:11,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:11,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-14 23:56:11,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:11,491 INFO L124 PetriNetUnfolderBase]: 971/3018 cut-off events. [2024-10-14 23:56:11,492 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-14 23:56:11,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 3018 events. 971/3018 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24572 event pairs, 820 based on Foata normal form. 1/2605 useless extension candidates. Maximal degree in co-relation 4865. Up to 1848 conditions per place. [2024-10-14 23:56:11,513 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 67 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-10-14 23:56:11,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 135 transitions, 445 flow [2024-10-14 23:56:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:56:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:56:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-10-14 23:56:11,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5261044176706827 [2024-10-14 23:56:11,515 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 307 flow. Second operand 3 states and 262 transitions. [2024-10-14 23:56:11,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 135 transitions, 445 flow [2024-10-14 23:56:11,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 423 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:56:11,523 INFO L231 Difference]: Finished difference. Result has 135 places, 135 transitions, 289 flow [2024-10-14 23:56:11,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=135, PETRI_TRANSITIONS=135} [2024-10-14 23:56:11,524 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 3 predicate places. [2024-10-14 23:56:11,525 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 135 transitions, 289 flow [2024-10-14 23:56:11,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:11,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:11,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:56:11,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:56:11,527 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-14 23:56:11,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash -662651564, now seen corresponding path program 1 times [2024-10-14 23:56:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:11,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748579798] [2024-10-14 23:56:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:11,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:11,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748579798] [2024-10-14 23:56:11,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748579798] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:56:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103546115] [2024-10-14 23:56:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:11,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:11,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:56:11,610 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) [2024-10-14 23:56:11,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:56:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:11,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:56:11,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:56:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:11,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:56:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:11,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103546115] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:56:11,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:56:11,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:56:11,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839933329] [2024-10-14 23:56:11,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:56:11,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:56:11,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:11,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:56:11,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:56:11,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-14 23:56:11,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 289 flow. Second operand has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:11,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:11,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-14 23:56:11,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:12,314 INFO L124 PetriNetUnfolderBase]: 971/3022 cut-off events. [2024-10-14 23:56:12,314 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-14 23:56:12,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4892 conditions, 3022 events. 971/3022 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24604 event pairs, 820 based on Foata normal form. 2/2611 useless extension candidates. Maximal degree in co-relation 4858. Up to 1846 conditions per place. [2024-10-14 23:56:12,331 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2024-10-14 23:56:12,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 138 transitions, 452 flow [2024-10-14 23:56:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:56:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:56:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2024-10-14 23:56:12,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4509466437177281 [2024-10-14 23:56:12,334 INFO L175 Difference]: Start difference. First operand has 135 places, 135 transitions, 289 flow. Second operand 7 states and 524 transitions. [2024-10-14 23:56:12,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 138 transitions, 452 flow [2024-10-14 23:56:12,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:56:12,337 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 315 flow [2024-10-14 23:56:12,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-10-14 23:56:12,338 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2024-10-14 23:56:12,339 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 315 flow [2024-10-14 23:56:12,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:12,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:12,340 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:56:12,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 23:56:12,540 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,SelfDestructingSolverStorable3 [2024-10-14 23:56:12,541 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-14 23:56:12,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1560986060, now seen corresponding path program 2 times [2024-10-14 23:56:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:12,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219013113] [2024-10-14 23:56:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:56:12,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219013113] [2024-10-14 23:56:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219013113] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:56:12,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:56:12,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:56:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168778432] [2024-10-14 23:56:12,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:56:12,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:56:12,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:12,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:56:12,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:56:12,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 166 [2024-10-14 23:56:12,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:12,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:12,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 166 [2024-10-14 23:56:12,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:13,032 INFO L124 PetriNetUnfolderBase]: 949/2623 cut-off events. [2024-10-14 23:56:13,033 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 23:56:13,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 2623 events. 949/2623 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 20300 event pairs, 0 based on Foata normal form. 21/2339 useless extension candidates. Maximal degree in co-relation 4427. Up to 1753 conditions per place. [2024-10-14 23:56:13,049 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 115 selfloop transitions, 3 changer transitions 0/179 dead transitions. [2024-10-14 23:56:13,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 179 transitions, 633 flow [2024-10-14 23:56:13,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:56:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:56:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2024-10-14 23:56:13,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542168674698795 [2024-10-14 23:56:13,051 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 315 flow. Second operand 4 states and 368 transitions. [2024-10-14 23:56:13,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 179 transitions, 633 flow [2024-10-14 23:56:13,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:56:13,056 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 317 flow [2024-10-14 23:56:13,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2024-10-14 23:56:13,057 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2024-10-14 23:56:13,057 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 317 flow [2024-10-14 23:56:13,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:13,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:13,058 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:56:13,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:56:13,058 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-14 23:56:13,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1723904684, now seen corresponding path program 1 times [2024-10-14 23:56:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:13,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007514515] [2024-10-14 23:56:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:56:13,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:13,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007514515] [2024-10-14 23:56:13,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007514515] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:56:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856996830] [2024-10-14 23:56:13,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:13,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:13,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:56:13,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:56:13,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:56:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:13,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:56:13,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:56:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:56:13,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:56:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:56:13,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856996830] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:56:13,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:56:13,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-14 23:56:13,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362334752] [2024-10-14 23:56:13,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:56:13,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 23:56:13,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:13,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 23:56:13,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-14 23:56:13,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-14 23:56:13,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 317 flow. Second operand has 18 states, 18 states have (on average 65.22222222222223) internal successors, (1174), 18 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:13,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:13,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-14 23:56:13,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:14,139 INFO L124 PetriNetUnfolderBase]: 968/2905 cut-off events. [2024-10-14 23:56:14,139 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-10-14 23:56:14,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4815 conditions, 2905 events. 968/2905 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23119 event pairs, 820 based on Foata normal form. 4/2539 useless extension candidates. Maximal degree in co-relation 4740. Up to 1810 conditions per place. [2024-10-14 23:56:14,159 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 15 changer transitions 0/144 dead transitions. [2024-10-14 23:56:14,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 529 flow [2024-10-14 23:56:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:56:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:56:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1046 transitions. [2024-10-14 23:56:14,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42008032128514056 [2024-10-14 23:56:14,163 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 317 flow. Second operand 15 states and 1046 transitions. [2024-10-14 23:56:14,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 529 flow [2024-10-14 23:56:14,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:56:14,166 INFO L231 Difference]: Finished difference. Result has 156 places, 144 transitions, 408 flow [2024-10-14 23:56:14,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=408, PETRI_PLACES=156, PETRI_TRANSITIONS=144} [2024-10-14 23:56:14,167 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 24 predicate places. [2024-10-14 23:56:14,168 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 144 transitions, 408 flow [2024-10-14 23:56:14,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.22222222222223) internal successors, (1174), 18 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:14,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:14,169 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:56:14,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:56:14,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:14,369 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-14 23:56:14,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:14,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1749324908, now seen corresponding path program 2 times [2024-10-14 23:56:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:14,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279091460] [2024-10-14 23:56:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:14,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:56:14,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:14,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279091460] [2024-10-14 23:56:14,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279091460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:56:14,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309708501] [2024-10-14 23:56:14,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:56:14,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:14,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:56:14,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:56:14,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:56:14,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 23:56:14,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:56:14,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 23:56:14,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:56:14,859 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:56:14,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:56:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:56:15,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309708501] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:56:15,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:56:15,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-14 23:56:15,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411288159] [2024-10-14 23:56:15,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:56:15,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 23:56:15,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 23:56:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-14 23:56:15,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2024-10-14 23:56:15,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 144 transitions, 408 flow. Second operand has 23 states, 23 states have (on average 65.21739130434783) internal successors, (1500), 23 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:15,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:15,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2024-10-14 23:56:15,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:15,692 INFO L124 PetriNetUnfolderBase]: 968/2938 cut-off events. [2024-10-14 23:56:15,693 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-10-14 23:56:15,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4878 conditions, 2938 events. 968/2938 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23392 event pairs, 820 based on Foata normal form. 3/2566 useless extension candidates. Maximal degree in co-relation 4743. Up to 1808 conditions per place. [2024-10-14 23:56:15,713 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 67 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-10-14 23:56:15,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 150 transitions, 638 flow [2024-10-14 23:56:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 23:56:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 23:56:15,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1435 transitions. [2024-10-14 23:56:15,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41164658634538154 [2024-10-14 23:56:15,720 INFO L175 Difference]: Start difference. First operand has 156 places, 144 transitions, 408 flow. Second operand 21 states and 1435 transitions. [2024-10-14 23:56:15,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 150 transitions, 638 flow [2024-10-14 23:56:15,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 150 transitions, 628 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:56:15,728 INFO L231 Difference]: Finished difference. Result has 175 places, 150 transitions, 509 flow [2024-10-14 23:56:15,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=509, PETRI_PLACES=175, PETRI_TRANSITIONS=150} [2024-10-14 23:56:15,730 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2024-10-14 23:56:15,731 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 150 transitions, 509 flow [2024-10-14 23:56:15,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 65.21739130434783) internal successors, (1500), 23 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:15,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:15,732 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:56:15,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:56:15,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:15,933 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-14 23:56:15,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash 44755527, now seen corresponding path program 3 times [2024-10-14 23:56:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644463961] [2024-10-14 23:56:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:56:15,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 23:56:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 23:56:16,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 23:56:16,007 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 23:56:16,008 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-14 23:56:16,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-10-14 23:56:16,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-10-14 23:56:16,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-10-14 23:56:16,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-10-14 23:56:16,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-10-14 23:56:16,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-10-14 23:56:16,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-10-14 23:56:16,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-10-14 23:56:16,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-10-14 23:56:16,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-10-14 23:56:16,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-10-14 23:56:16,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-10-14 23:56:16,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-10-14 23:56:16,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-10-14 23:56:16,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-10-14 23:56:16,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-10-14 23:56:16,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-10-14 23:56:16,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-10-14 23:56:16,017 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-10-14 23:56:16,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-10-14 23:56:16,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-10-14 23:56:16,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-10-14 23:56:16,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-10-14 23:56:16,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-10-14 23:56:16,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-10-14 23:56:16,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-10-14 23:56:16,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-10-14 23:56:16,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-10-14 23:56:16,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 23:56:16,019 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-10-14 23:56:16,025 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 23:56:16,025 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 23:56:16,060 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 23:56:16,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 218 transitions, 452 flow [2024-10-14 23:56:16,099 INFO L124 PetriNetUnfolderBase]: 97/429 cut-off events. [2024-10-14 23:56:16,099 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 23:56:16,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 429 events. 97/429 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2400 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2024-10-14 23:56:16,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 218 transitions, 452 flow [2024-10-14 23:56:16,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 218 transitions, 452 flow [2024-10-14 23:56:16,110 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:56:16,110 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;@2adbcb31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:56:16,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-10-14 23:56:16,112 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:56:16,112 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:56:16,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:56:16,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:16,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:56:16,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-14 23:56:16,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1044402, now seen corresponding path program 1 times [2024-10-14 23:56:16,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:16,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601558649] [2024-10-14 23:56:16,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:16,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:16,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:16,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601558649] [2024-10-14 23:56:16,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601558649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:56:16,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:56:16,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:56:16,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283156367] [2024-10-14 23:56:16,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:56:16,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:56:16,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:56:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:56:16,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-14 23:56:16,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 218 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:16,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:16,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-14 23:56:16,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:23,035 INFO L124 PetriNetUnfolderBase]: 40815/88548 cut-off events. [2024-10-14 23:56:23,035 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-10-14 23:56:23,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148123 conditions, 88548 events. 40815/88548 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 2483. Compared 1023249 event pairs, 35780 based on Foata normal form. 17425/94055 useless extension candidates. Maximal degree in co-relation 110414. Up to 59461 conditions per place. [2024-10-14 23:56:23,737 INFO L140 encePairwiseOnDemand]: 172/218 looper letters, 94 selfloop transitions, 3 changer transitions 0/180 dead transitions. [2024-10-14 23:56:23,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 180 transitions, 570 flow [2024-10-14 23:56:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:56:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:56:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2024-10-14 23:56:23,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5412844036697247 [2024-10-14 23:56:23,740 INFO L175 Difference]: Start difference. First operand has 173 places, 218 transitions, 452 flow. Second operand 4 states and 472 transitions. [2024-10-14 23:56:23,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 180 transitions, 570 flow [2024-10-14 23:56:23,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 180 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:56:23,747 INFO L231 Difference]: Finished difference. Result has 178 places, 180 transitions, 396 flow [2024-10-14 23:56:23,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=178, PETRI_TRANSITIONS=180} [2024-10-14 23:56:23,751 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 5 predicate places. [2024-10-14 23:56:23,751 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 180 transitions, 396 flow [2024-10-14 23:56:23,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:23,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:23,754 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:56:23,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 23:56:23,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-14 23:56:23,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1050150373, now seen corresponding path program 1 times [2024-10-14 23:56:23,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:23,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471053319] [2024-10-14 23:56:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:23,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:23,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:23,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471053319] [2024-10-14 23:56:23,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471053319] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:56:23,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022709758] [2024-10-14 23:56:23,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:23,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:23,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:56:23,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:56:23,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:56:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:23,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:56:23,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:56:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:23,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:56:23,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022709758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:56:23,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:56:23,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:56:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39771664] [2024-10-14 23:56:23,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:56:23,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:56:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:23,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:56:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:56:23,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-14 23:56:23,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 180 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:23,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:23,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-14 23:56:23,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:30,286 INFO L124 PetriNetUnfolderBase]: 40815/88547 cut-off events. [2024-10-14 23:56:30,287 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-10-14 23:56:30,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148133 conditions, 88547 events. 40815/88547 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 2483. Compared 1023339 event pairs, 35780 based on Foata normal form. 1/76630 useless extension candidates. Maximal degree in co-relation 148114. Up to 59456 conditions per place. [2024-10-14 23:56:30,936 INFO L140 encePairwiseOnDemand]: 213/218 looper letters, 90 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2024-10-14 23:56:30,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 179 transitions, 584 flow [2024-10-14 23:56:30,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:56:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:56:30,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 595 transitions. [2024-10-14 23:56:30,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45489296636085624 [2024-10-14 23:56:30,938 INFO L175 Difference]: Start difference. First operand has 178 places, 180 transitions, 396 flow. Second operand 6 states and 595 transitions. [2024-10-14 23:56:30,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 179 transitions, 584 flow [2024-10-14 23:56:30,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 179 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:56:30,942 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 402 flow [2024-10-14 23:56:30,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2024-10-14 23:56:30,944 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 8 predicate places. [2024-10-14 23:56:30,944 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 402 flow [2024-10-14 23:56:30,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:30,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:30,944 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:56:30,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 23:56:31,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 23:56:31,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-14 23:56:31,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:31,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1805075655, now seen corresponding path program 1 times [2024-10-14 23:56:31,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:31,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317003906] [2024-10-14 23:56:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:31,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:56:31,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:31,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317003906] [2024-10-14 23:56:31,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317003906] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:56:31,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:56:31,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:56:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965491702] [2024-10-14 23:56:31,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:56:31,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:56:31,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:56:31,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:56:31,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-14 23:56:31,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:31,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:31,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-14 23:56:31,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:37,312 INFO L124 PetriNetUnfolderBase]: 40815/88546 cut-off events. [2024-10-14 23:56:37,313 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-10-14 23:56:37,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148135 conditions, 88546 events. 40815/88546 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 1023303 event pairs, 35780 based on Foata normal form. 1/76630 useless extension candidates. Maximal degree in co-relation 148110. Up to 59459 conditions per place. [2024-10-14 23:56:38,100 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 91 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2024-10-14 23:56:38,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 178 transitions, 588 flow [2024-10-14 23:56:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:56:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:56:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2024-10-14 23:56:38,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5244648318042814 [2024-10-14 23:56:38,102 INFO L175 Difference]: Start difference. First operand has 181 places, 179 transitions, 402 flow. Second operand 3 states and 343 transitions. [2024-10-14 23:56:38,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 178 transitions, 588 flow [2024-10-14 23:56:38,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 178 transitions, 566 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:56:38,106 INFO L231 Difference]: Finished difference. Result has 176 places, 178 transitions, 384 flow [2024-10-14 23:56:38,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=176, PETRI_TRANSITIONS=178} [2024-10-14 23:56:38,107 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 3 predicate places. [2024-10-14 23:56:38,107 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 178 transitions, 384 flow [2024-10-14 23:56:38,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:38,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:38,108 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:56:38,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:56:38,108 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-14 23:56:38,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash 486378720, now seen corresponding path program 1 times [2024-10-14 23:56:38,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:38,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86927731] [2024-10-14 23:56:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:38,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:38,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:38,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86927731] [2024-10-14 23:56:38,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86927731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:56:38,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877058881] [2024-10-14 23:56:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:38,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:38,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:56:38,168 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:56:38,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:56:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:38,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:56:38,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:56:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:38,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:56:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:56:38,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877058881] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:56:38,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:56:38,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:56:38,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271193687] [2024-10-14 23:56:38,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:56:38,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:56:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:56:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:56:38,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-14 23:56:38,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 178 transitions, 384 flow. Second operand has 10 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:38,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:38,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-14 23:56:38,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:44,129 INFO L124 PetriNetUnfolderBase]: 40815/88550 cut-off events. [2024-10-14 23:56:44,129 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-14 23:56:44,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148138 conditions, 88550 events. 40815/88550 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 1023205 event pairs, 35780 based on Foata normal form. 2/76636 useless extension candidates. Maximal degree in co-relation 148103. Up to 59457 conditions per place. [2024-10-14 23:56:44,617 INFO L140 encePairwiseOnDemand]: 214/218 looper letters, 91 selfloop transitions, 7 changer transitions 0/181 dead transitions. [2024-10-14 23:56:44,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 181 transitions, 595 flow [2024-10-14 23:56:44,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:56:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:56:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 681 transitions. [2024-10-14 23:56:44,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44626474442988207 [2024-10-14 23:56:44,620 INFO L175 Difference]: Start difference. First operand has 176 places, 178 transitions, 384 flow. Second operand 7 states and 681 transitions. [2024-10-14 23:56:44,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 181 transitions, 595 flow [2024-10-14 23:56:44,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 181 transitions, 581 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:56:44,623 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 410 flow [2024-10-14 23:56:44,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2024-10-14 23:56:44,624 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 9 predicate places. [2024-10-14 23:56:44,624 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 410 flow [2024-10-14 23:56:44,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:44,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:44,625 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 23:56:44,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 23:56:44,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:44,826 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-14 23:56:44,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1028465664, now seen corresponding path program 2 times [2024-10-14 23:56:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:44,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897125779] [2024-10-14 23:56:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:44,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:56:44,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:44,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897125779] [2024-10-14 23:56:44,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897125779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:56:44,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:56:44,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:56:44,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832485629] [2024-10-14 23:56:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:56:44,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:56:44,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:56:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:56:44,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 218 [2024-10-14 23:56:44,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:44,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:44,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 218 [2024-10-14 23:56:44,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:56:51,449 INFO L124 PetriNetUnfolderBase]: 43605/94478 cut-off events. [2024-10-14 23:56:51,449 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-14 23:56:51,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158178 conditions, 94478 events. 43605/94478 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 2583. Compared 1100385 event pairs, 24476 based on Foata normal form. 21/81962 useless extension candidates. Maximal degree in co-relation 158138. Up to 63503 conditions per place. [2024-10-14 23:56:52,014 INFO L140 encePairwiseOnDemand]: 212/218 looper letters, 143 selfloop transitions, 3 changer transitions 0/226 dead transitions. [2024-10-14 23:56:52,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 226 transitions, 792 flow [2024-10-14 23:56:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:56:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:56:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2024-10-14 23:56:52,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5412844036697247 [2024-10-14 23:56:52,017 INFO L175 Difference]: Start difference. First operand has 182 places, 181 transitions, 410 flow. Second operand 4 states and 472 transitions. [2024-10-14 23:56:52,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 226 transitions, 792 flow [2024-10-14 23:56:52,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 226 transitions, 788 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:56:52,021 INFO L231 Difference]: Finished difference. Result has 185 places, 183 transitions, 430 flow [2024-10-14 23:56:52,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=185, PETRI_TRANSITIONS=183} [2024-10-14 23:56:52,022 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, 12 predicate places. [2024-10-14 23:56:52,022 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 183 transitions, 430 flow [2024-10-14 23:56:52,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:52,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:56:52,022 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:56:52,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 23:56:52,022 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-14 23:56:52,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:56:52,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1191919968, now seen corresponding path program 1 times [2024-10-14 23:56:52,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:56:52,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707039953] [2024-10-14 23:56:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:52,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:56:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 23:56:52,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:56:52,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707039953] [2024-10-14 23:56:52,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707039953] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:56:52,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839561020] [2024-10-14 23:56:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:56:52,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:56:52,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:56:52,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:56:52,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 23:56:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:56:52,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:56:52,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:56:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 23:56:52,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:56:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 23:56:52,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839561020] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:56:52,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:56:52,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-14 23:56:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499763677] [2024-10-14 23:56:52,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:56:52,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 23:56:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:56:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 23:56:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-14 23:56:52,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2024-10-14 23:56:52,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 183 transitions, 430 flow. Second operand has 18 states, 18 states have (on average 84.27777777777777) internal successors, (1517), 18 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:56:52,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:56:52,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2024-10-14 23:56:52,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand