./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_06-cond_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:57:19,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:57:19,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:57:19,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:57:19,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:57:19,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:57:19,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:57:19,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:57:19,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:57:19,355 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:57:19,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:57:19,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:57:19,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:57:19,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:57:19,359 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:57:19,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:57:19,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:57:19,360 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:57:19,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:57:19,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:57:19,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:57:19,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:57:19,365 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:57:19,365 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:57:19,365 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:57:19,366 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:57:19,366 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:57:19,366 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:57:19,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:57:19,367 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:57:19,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:57:19,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:57:19,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:57:19,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:57:19,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:57:19,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:57:19,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:57:19,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:57:19,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:57:19,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:57:19,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:57:19,371 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:57:19,371 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:57:19,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:57:19,372 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2024-10-11 23:57:19,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:57:19,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:57:19,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:57:19,669 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:57:19,670 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:57:19,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-10-11 23:57:21,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:57:21,441 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:57:21,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-10-11 23:57:21,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/eecf0d8c4/cea944400755444ab17b73e7d7f63717/FLAGcce36e52e [2024-10-11 23:57:21,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/eecf0d8c4/cea944400755444ab17b73e7d7f63717 [2024-10-11 23:57:21,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:57:21,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:57:21,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:57:21,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:57:21,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:57:21,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:57:21" (1/1) ... [2024-10-11 23:57:21,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c1dcb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:21, skipping insertion in model container [2024-10-11 23:57:21,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:57:21" (1/1) ... [2024-10-11 23:57:21,528 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:57:22,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:57:22,032 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:57:22,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:57:22,153 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:57:22,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22 WrapperNode [2024-10-11 23:57:22,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:57:22,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:57:22,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:57:22,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:57:22,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,225 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2024-10-11 23:57:22,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:57:22,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:57:22,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:57:22,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:57:22,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,270 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-10-11 23:57:22,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:57:22,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:57:22,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:57:22,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:57:22,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (1/1) ... [2024-10-11 23:57:22,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:57:22,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:22,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:57:22,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:57:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 23:57:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 23:57:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:57:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:57:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:57:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:57:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 23:57:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 23:57:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:57:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:57:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:57:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 23:57:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 23:57:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:57:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:57:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 23:57:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 23:57:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:57:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:57:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:57:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 23:57:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 23:57:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:57:22,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:57:22,401 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:57:22,582 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:57:22,584 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:57:22,867 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:57:22,867 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:57:23,049 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:57:23,051 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-11 23:57:23,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:57:23 BoogieIcfgContainer [2024-10-11 23:57:23,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:57:23,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:57:23,055 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:57:23,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:57:23,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:57:21" (1/3) ... [2024-10-11 23:57:23,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e7035a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:57:23, skipping insertion in model container [2024-10-11 23:57:23,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:57:22" (2/3) ... [2024-10-11 23:57:23,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e7035a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:57:23, skipping insertion in model container [2024-10-11 23:57:23,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:57:23" (3/3) ... [2024-10-11 23:57:23,063 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2024-10-11 23:57:23,079 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:57:23,080 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 23:57:23,080 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:57:23,123 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 23:57:23,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 67 transitions, 141 flow [2024-10-11 23:57:23,191 INFO L124 PetriNetUnfolderBase]: 17/89 cut-off events. [2024-10-11 23:57:23,191 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:57:23,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 17/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 271 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2024-10-11 23:57:23,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 67 transitions, 141 flow [2024-10-11 23:57:23,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 66 transitions, 139 flow [2024-10-11 23:57:23,216 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:57:23,225 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;@5746524b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:57:23,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-11 23:57:23,231 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:57:23,231 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-10-11 23:57:23,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:57:23,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:23,232 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:57:23,234 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:57:23,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:23,239 INFO L85 PathProgramCache]: Analyzing trace with hash 373796396, now seen corresponding path program 1 times [2024-10-11 23:57:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:23,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258211039] [2024-10-11 23:57:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:23,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:23,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258211039] [2024-10-11 23:57:23,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258211039] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:23,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:23,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:57:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128150336] [2024-10-11 23:57:23,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:23,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:23,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:23,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:23,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:23,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-10-11 23:57:23,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:23,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:23,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-10-11 23:57:23,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:23,917 INFO L124 PetriNetUnfolderBase]: 159/431 cut-off events. [2024-10-11 23:57:23,917 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:57:23,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 431 events. 159/431 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2126 event pairs, 20 based on Foata normal form. 72/444 useless extension candidates. Maximal degree in co-relation 709. Up to 264 conditions per place. [2024-10-11 23:57:23,924 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 47 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-10-11 23:57:23,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 265 flow [2024-10-11 23:57:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-10-11 23:57:23,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7052238805970149 [2024-10-11 23:57:23,944 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 139 flow. Second operand 4 states and 189 transitions. [2024-10-11 23:57:23,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 265 flow [2024-10-11 23:57:23,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:57:23,951 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 129 flow [2024-10-11 23:57:23,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-10-11 23:57:23,960 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-10-11 23:57:23,961 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 129 flow [2024-10-11 23:57:23,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:57:23,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:23,962 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:23,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:57:23,962 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:57:23,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:23,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1081400365, now seen corresponding path program 1 times [2024-10-11 23:57:23,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:23,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830800351] [2024-10-11 23:57:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:23,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:57:23,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:57:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:57:24,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:57:24,042 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:57:24,044 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-11 23:57:24,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-11 23:57:24,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-11 23:57:24,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-11 23:57:24,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-11 23:57:24,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-11 23:57:24,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-11 23:57:24,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-11 23:57:24,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-11 23:57:24,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-11 23:57:24,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-11 23:57:24,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-11 23:57:24,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-11 23:57:24,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:57:24,048 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 23:57:24,050 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:57:24,050 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 23:57:24,081 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:57:24,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 100 transitions, 216 flow [2024-10-11 23:57:24,112 INFO L124 PetriNetUnfolderBase]: 30/163 cut-off events. [2024-10-11 23:57:24,112 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:57:24,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 163 events. 30/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 593 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 98. Up to 9 conditions per place. [2024-10-11 23:57:24,115 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 100 transitions, 216 flow [2024-10-11 23:57:24,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 100 transitions, 216 flow [2024-10-11 23:57:24,120 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:57:24,123 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;@5746524b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:57:24,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-11 23:57:24,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:57:24,142 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-10-11 23:57:24,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:57:24,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:24,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:57:24,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:24,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:24,148 INFO L85 PathProgramCache]: Analyzing trace with hash 469256687, now seen corresponding path program 1 times [2024-10-11 23:57:24,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:24,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291965695] [2024-10-11 23:57:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:24,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:24,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:24,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291965695] [2024-10-11 23:57:24,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291965695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:24,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:24,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:57:24,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860291945] [2024-10-11 23:57:24,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:24,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:24,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:24,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:24,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-10-11 23:57:24,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2024-10-11 23:57:24,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:24,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-10-11 23:57:24,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:25,466 INFO L124 PetriNetUnfolderBase]: 4611/9735 cut-off events. [2024-10-11 23:57:25,467 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-10-11 23:57:25,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16808 conditions, 9735 events. 4611/9735 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 83375 event pairs, 1952 based on Foata normal form. 1699/10288 useless extension candidates. Maximal degree in co-relation 1345. Up to 6969 conditions per place. [2024-10-11 23:57:25,552 INFO L140 encePairwiseOnDemand]: 80/100 looper letters, 65 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-10-11 23:57:25,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 374 flow [2024-10-11 23:57:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2024-10-11 23:57:25,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725 [2024-10-11 23:57:25,555 INFO L175 Difference]: Start difference. First operand has 86 places, 100 transitions, 216 flow. Second operand 4 states and 269 transitions. [2024-10-11 23:57:25,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 374 flow [2024-10-11 23:57:25,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:57:25,561 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 212 flow [2024-10-11 23:57:25,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2024-10-11 23:57:25,562 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2024-10-11 23:57:25,563 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 212 flow [2024-10-11 23:57:25,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2024-10-11 23:57:25,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:25,563 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:25,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:57:25,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:25,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash -482634360, now seen corresponding path program 1 times [2024-10-11 23:57:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:25,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570291607] [2024-10-11 23:57:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:25,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:25,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:25,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570291607] [2024-10-11 23:57:25,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570291607] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:25,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489780261] [2024-10-11 23:57:25,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:25,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:25,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:25,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:25,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:57:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:25,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:57:25,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:25,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:25,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489780261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:25,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:25,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:57:25,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927001303] [2024-10-11 23:57:25,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:25,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:57:25,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:25,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:57:25,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:57:25,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-10-11 23:57:25,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 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) [2024-10-11 23:57:25,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:25,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-10-11 23:57:25,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:26,807 INFO L124 PetriNetUnfolderBase]: 3957/8025 cut-off events. [2024-10-11 23:57:26,807 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-10-11 23:57:26,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14616 conditions, 8025 events. 3957/8025 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 64932 event pairs, 264 based on Foata normal form. 144/7265 useless extension candidates. Maximal degree in co-relation 1212. Up to 3893 conditions per place. [2024-10-11 23:57:26,863 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 105 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2024-10-11 23:57:26,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 564 flow [2024-10-11 23:57:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:57:26,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:57:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-10-11 23:57:26,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-10-11 23:57:26,868 INFO L175 Difference]: Start difference. First operand has 91 places, 88 transitions, 212 flow. Second operand 6 states and 370 transitions. [2024-10-11 23:57:26,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 564 flow [2024-10-11 23:57:26,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:57:26,875 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 218 flow [2024-10-11 23:57:26,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-10-11 23:57:26,876 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2024-10-11 23:57:26,877 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 218 flow [2024-10-11 23:57:26,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 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) [2024-10-11 23:57:26,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:26,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:26,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:57:27,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:27,080 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:27,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:27,080 INFO L85 PathProgramCache]: Analyzing trace with hash 234918174, now seen corresponding path program 1 times [2024-10-11 23:57:27,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:27,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659831632] [2024-10-11 23:57:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:27,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:27,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659831632] [2024-10-11 23:57:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659831632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:27,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:27,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:57:27,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652948212] [2024-10-11 23:57:27,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:27,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:27,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:27,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:27,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:27,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 100 [2024-10-11 23:57:27,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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) [2024-10-11 23:57:27,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:27,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 100 [2024-10-11 23:57:27,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:28,525 INFO L124 PetriNetUnfolderBase]: 6320/12941 cut-off events. [2024-10-11 23:57:28,526 INFO L125 PetriNetUnfolderBase]: For 1175/1336 co-relation queries the response was YES. [2024-10-11 23:57:28,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23410 conditions, 12941 events. 6320/12941 cut-off events. For 1175/1336 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 112465 event pairs, 1495 based on Foata normal form. 222/11783 useless extension candidates. Maximal degree in co-relation 18886. Up to 6459 conditions per place. [2024-10-11 23:57:28,589 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 122 selfloop transitions, 12 changer transitions 0/178 dead transitions. [2024-10-11 23:57:28,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 722 flow [2024-10-11 23:57:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:57:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:57:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2024-10-11 23:57:28,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-10-11 23:57:28,591 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 218 flow. Second operand 5 states and 355 transitions. [2024-10-11 23:57:28,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 722 flow [2024-10-11 23:57:28,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 178 transitions, 699 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-11 23:57:28,598 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 300 flow [2024-10-11 23:57:28,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-10-11 23:57:28,599 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2024-10-11 23:57:28,599 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 300 flow [2024-10-11 23:57:28,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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) [2024-10-11 23:57:28,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:28,600 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:57:28,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:57:28,601 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:28,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:28,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2076762806, now seen corresponding path program 1 times [2024-10-11 23:57:28,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:28,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753695599] [2024-10-11 23:57:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:57:28,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:28,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753695599] [2024-10-11 23:57:28,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753695599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:28,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:28,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:57:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098213445] [2024-10-11 23:57:28,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:28,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:28,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-10-11 23:57:28,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2024-10-11 23:57:28,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:28,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-10-11 23:57:28,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:29,771 INFO L124 PetriNetUnfolderBase]: 5565/11300 cut-off events. [2024-10-11 23:57:29,772 INFO L125 PetriNetUnfolderBase]: For 3880/3885 co-relation queries the response was YES. [2024-10-11 23:57:29,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22980 conditions, 11300 events. 5565/11300 cut-off events. For 3880/3885 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 94885 event pairs, 1085 based on Foata normal form. 160/10328 useless extension candidates. Maximal degree in co-relation 19721. Up to 7389 conditions per place. [2024-10-11 23:57:29,855 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 103 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-10-11 23:57:29,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 688 flow [2024-10-11 23:57:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-10-11 23:57:29,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6475 [2024-10-11 23:57:29,857 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 300 flow. Second operand 4 states and 259 transitions. [2024-10-11 23:57:29,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 688 flow [2024-10-11 23:57:29,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 684 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 23:57:29,873 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 312 flow [2024-10-11 23:57:29,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2024-10-11 23:57:29,874 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2024-10-11 23:57:29,876 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 312 flow [2024-10-11 23:57:29,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2024-10-11 23:57:29,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:29,876 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-11 23:57:29,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 23:57:29,877 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:57:29,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1390752506, now seen corresponding path program 1 times [2024-10-11 23:57:29,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:29,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326026937] [2024-10-11 23:57:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:29,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:57:29,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:57:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:57:29,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:57:29,924 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:57:29,924 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-11 23:57:29,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-11 23:57:29,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-11 23:57:29,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-11 23:57:29,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-11 23:57:29,928 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-11 23:57:29,929 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-11 23:57:29,929 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-11 23:57:29,929 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-11 23:57:29,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-11 23:57:29,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-11 23:57:29,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-11 23:57:29,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-11 23:57:29,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-11 23:57:29,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-11 23:57:29,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-11 23:57:29,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-11 23:57:29,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:57:29,932 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-11 23:57:29,932 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:57:29,932 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 23:57:29,973 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 23:57:29,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 133 transitions, 293 flow [2024-10-11 23:57:30,007 INFO L124 PetriNetUnfolderBase]: 46/256 cut-off events. [2024-10-11 23:57:30,007 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 23:57:30,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 256 events. 46/256 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1036 event pairs, 1 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 178. Up to 12 conditions per place. [2024-10-11 23:57:30,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 133 transitions, 293 flow [2024-10-11 23:57:30,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 133 transitions, 293 flow [2024-10-11 23:57:30,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:57:30,014 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;@5746524b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:57:30,014 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-11 23:57:30,017 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:57:30,017 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-10-11 23:57:30,017 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:57:30,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:30,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:57:30,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:57:30,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash 596209043, now seen corresponding path program 1 times [2024-10-11 23:57:30,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:30,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123682194] [2024-10-11 23:57:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:30,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:30,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123682194] [2024-10-11 23:57:30,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123682194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:30,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:30,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:57:30,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191588974] [2024-10-11 23:57:30,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:30,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:30,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:30,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:30,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:30,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-10-11 23:57:30,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2024-10-11 23:57:30,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:30,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-10-11 23:57:30,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:41,328 INFO L124 PetriNetUnfolderBase]: 86447/153025 cut-off events. [2024-10-11 23:57:41,329 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2024-10-11 23:57:41,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271744 conditions, 153025 events. 86447/153025 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 3550. Compared 1600832 event pairs, 52468 based on Foata normal form. 31112/168963 useless extension candidates. Maximal degree in co-relation 17771. Up to 117557 conditions per place. [2024-10-11 23:57:42,692 INFO L140 encePairwiseOnDemand]: 107/133 looper letters, 78 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-10-11 23:57:42,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 465 flow [2024-10-11 23:57:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:57:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:57:42,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2024-10-11 23:57:42,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466165413533834 [2024-10-11 23:57:42,694 INFO L175 Difference]: Start difference. First operand has 114 places, 133 transitions, 293 flow. Second operand 4 states and 344 transitions. [2024-10-11 23:57:42,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 465 flow [2024-10-11 23:57:42,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 138 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:57:42,700 INFO L231 Difference]: Finished difference. Result has 119 places, 115 transitions, 277 flow [2024-10-11 23:57:42,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2024-10-11 23:57:42,703 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2024-10-11 23:57:42,703 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 277 flow [2024-10-11 23:57:42,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2024-10-11 23:57:42,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:42,704 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:42,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:57:42,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:57:42,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:42,705 INFO L85 PathProgramCache]: Analyzing trace with hash -950780920, now seen corresponding path program 1 times [2024-10-11 23:57:42,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:42,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075264019] [2024-10-11 23:57:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:42,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:42,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:42,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075264019] [2024-10-11 23:57:42,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075264019] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:57:42,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701506170] [2024-10-11 23:57:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:42,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:42,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:57:42,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:57:42,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:57:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:42,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:57:42,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:57:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:42,910 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:57:42,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701506170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:42,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:57:42,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:57:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479874850] [2024-10-11 23:57:42,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:42,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:57:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:57:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:57:42,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-10-11 23:57:42,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 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) [2024-10-11 23:57:42,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:42,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-10-11 23:57:42,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:57:51,863 INFO L124 PetriNetUnfolderBase]: 71934/122935 cut-off events. [2024-10-11 23:57:51,863 INFO L125 PetriNetUnfolderBase]: For 7069/7069 co-relation queries the response was YES. [2024-10-11 23:57:52,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227553 conditions, 122935 events. 71934/122935 cut-off events. For 7069/7069 co-relation queries the response was YES. Maximal size of possible extension queue 2746. Compared 1214493 event pairs, 8196 based on Foata normal form. 1872/112848 useless extension candidates. Maximal degree in co-relation 19282. Up to 63134 conditions per place. [2024-10-11 23:57:52,824 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 140 selfloop transitions, 6 changer transitions 0/203 dead transitions. [2024-10-11 23:57:52,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 203 transitions, 743 flow [2024-10-11 23:57:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:57:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:57:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 489 transitions. [2024-10-11 23:57:52,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127819548872181 [2024-10-11 23:57:52,826 INFO L175 Difference]: Start difference. First operand has 119 places, 115 transitions, 277 flow. Second operand 6 states and 489 transitions. [2024-10-11 23:57:52,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 203 transitions, 743 flow [2024-10-11 23:57:52,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 203 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:57:52,833 INFO L231 Difference]: Finished difference. Result has 122 places, 114 transitions, 283 flow [2024-10-11 23:57:52,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=122, PETRI_TRANSITIONS=114} [2024-10-11 23:57:52,834 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 8 predicate places. [2024-10-11 23:57:52,834 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 114 transitions, 283 flow [2024-10-11 23:57:52,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 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) [2024-10-11 23:57:52,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:57:52,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:57:52,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 23:57:53,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:57:53,040 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:57:53,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:57:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash 791569469, now seen corresponding path program 1 times [2024-10-11 23:57:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:57:53,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931375259] [2024-10-11 23:57:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:57:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:57:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:57:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:57:53,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:57:53,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931375259] [2024-10-11 23:57:53,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931375259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:57:53,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:57:53,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:57:53,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949902347] [2024-10-11 23:57:53,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:57:53,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:57:53,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:57:53,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:57:53,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:57:53,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2024-10-11 23:57:53,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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) [2024-10-11 23:57:53,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:57:53,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2024-10-11 23:57:53,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:07,550 INFO L124 PetriNetUnfolderBase]: 123460/213529 cut-off events. [2024-10-11 23:58:07,551 INFO L125 PetriNetUnfolderBase]: For 18650/20898 co-relation queries the response was YES. [2024-10-11 23:58:08,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392961 conditions, 213529 events. 123460/213529 cut-off events. For 18650/20898 co-relation queries the response was YES. Maximal size of possible extension queue 4968. Compared 2246257 event pairs, 39792 based on Foata normal form. 3005/196357 useless extension candidates. Maximal degree in co-relation 265555. Up to 115524 conditions per place. [2024-10-11 23:58:09,237 INFO L140 encePairwiseOnDemand]: 122/133 looper letters, 174 selfloop transitions, 16 changer transitions 0/248 dead transitions. [2024-10-11 23:58:09,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 248 transitions, 1015 flow [2024-10-11 23:58:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:58:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:58:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2024-10-11 23:58:09,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7233082706766917 [2024-10-11 23:58:09,239 INFO L175 Difference]: Start difference. First operand has 122 places, 114 transitions, 283 flow. Second operand 5 states and 481 transitions. [2024-10-11 23:58:09,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 248 transitions, 1015 flow [2024-10-11 23:58:09,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 248 transitions, 992 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-11 23:58:09,253 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 399 flow [2024-10-11 23:58:09,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2024-10-11 23:58:09,254 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 12 predicate places. [2024-10-11 23:58:09,254 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 399 flow [2024-10-11 23:58:09,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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) [2024-10-11 23:58:09,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:09,254 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:58:09,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:58:09,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:58:09,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:09,255 INFO L85 PathProgramCache]: Analyzing trace with hash 590563151, now seen corresponding path program 1 times [2024-10-11 23:58:09,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:09,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509874397] [2024-10-11 23:58:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:09,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:58:09,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:09,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509874397] [2024-10-11 23:58:09,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509874397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:09,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:09,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:58:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926710767] [2024-10-11 23:58:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:09,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:09,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:09,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:09,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2024-10-11 23:58:09,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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) [2024-10-11 23:58:09,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:09,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2024-10-11 23:58:09,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand