./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 fa97ad6141e9aa8818b694f4968e766701fe7261f516cd86f7a15e5cf1a3d14d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:26:30,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:26:30,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:26:30,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:26:30,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:26:30,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:26:30,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:26:30,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:26:30,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:26:30,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:26:30,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:26:30,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:26:30,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:26:30,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:26:30,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:26:30,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:26:30,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:26:30,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:26:30,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:26:30,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:26:30,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:26:30,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:26:30,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:26:30,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:26:30,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:26:30,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:26:30,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:26:30,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:26:30,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:26:30,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:26:30,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:26:30,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:26:30,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:26:30,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:26:30,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:26:30,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:26:30,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:26:30,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:26:30,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:26:30,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:26:30,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:26:30,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:26:30,347 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:26:30,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:26:30,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:26:30,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:26:30,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:26:30,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:26:30,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:26:30,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:26:30,351 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:26:30,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:26:30,352 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:26:30,352 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:26:30,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:26:30,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:26:30,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:26:30,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:26:30,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:26:30,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:26:30,353 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:26:30,353 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:26:30,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:26:30,354 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:26:30,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:26:30,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:26:30,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:26:30,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:26:30,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:26:30,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:26:30,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:26:30,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:26:30,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:26:30,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:26:30,356 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:26:30,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:26:30,356 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:26:30,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:26:30,356 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:26:30,356 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa97ad6141e9aa8818b694f4968e766701fe7261f516cd86f7a15e5cf1a3d14d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:26:30,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:26:30,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:26:30,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:26:30,634 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:26:30,635 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:26:30,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas.i [2023-08-30 08:26:31,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:26:31,857 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:26:31,857 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i [2023-08-30 08:26:31,865 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9278c166e/193c1ced68a14d30a67e9f9414c9ca66/FLAGcec81f2ab [2023-08-30 08:26:31,876 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9278c166e/193c1ced68a14d30a67e9f9414c9ca66 [2023-08-30 08:26:31,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:26:31,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:26:31,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:26:31,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:26:31,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:26:31,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:26:31" (1/1) ... [2023-08-30 08:26:31,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fcad905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:31, skipping insertion in model container [2023-08-30 08:26:31,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:26:31" (1/1) ... [2023-08-30 08:26:31,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:26:31,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:26:32,083 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i[31152,31165] [2023-08-30 08:26:32,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:26:32,095 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:26:32,134 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas.i[31152,31165] [2023-08-30 08:26:32,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:26:32,209 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:26:32,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32 WrapperNode [2023-08-30 08:26:32,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:26:32,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:26:32,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:26:32,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:26:32,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,264 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 198 [2023-08-30 08:26:32,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:26:32,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:26:32,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:26:32,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:26:32,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,289 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:26:32,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:26:32,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:26:32,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:26:32,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (1/1) ... [2023-08-30 08:26:32,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:26:32,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:32,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 08:26:32,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 08:26:32,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:26:32,409 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 08:26:32,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 08:26:32,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:26:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:26:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:26:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:26:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:26:32,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:26:32,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:26:32,412 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 08:26:32,519 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:26:32,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:26:32,825 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:26:32,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:26:32,948 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 08:26:32,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:26:32 BoogieIcfgContainer [2023-08-30 08:26:32,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:26:32,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:26:32,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:26:32,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:26:32,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:26:31" (1/3) ... [2023-08-30 08:26:32,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373df8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:26:32, skipping insertion in model container [2023-08-30 08:26:32,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:32" (2/3) ... [2023-08-30 08:26:32,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373df8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:26:32, skipping insertion in model container [2023-08-30 08:26:32,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:26:32" (3/3) ... [2023-08-30 08:26:32,956 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas.i [2023-08-30 08:26:32,961 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:26:32,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:26:32,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 08:26:32,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:26:33,041 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:26:33,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:33,128 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:26:33,129 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:33,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:26:33,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:33,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:33,142 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:33,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:33,163 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:33,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:33,188 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:26:33,189 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:33,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:26:33,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:26:36,942 INFO L134 LiptonReduction]: Checked pairs total: 3076 [2023-08-30 08:26:36,942 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:26:36,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:26:36,956 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7cffb5e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:36,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 08:26:36,961 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-08-30 08:26:36,961 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:36,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:36,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:36,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:36,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:36,965 INFO L85 PathProgramCache]: Analyzing trace with hash 288098820, now seen corresponding path program 1 times [2023-08-30 08:26:36,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:36,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717779874] [2023-08-30 08:26:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:36,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:37,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717779874] [2023-08-30 08:26:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717779874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:37,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122339699] [2023-08-30 08:26:37,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:37,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:37,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:37,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2023-08-30 08:26:37,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 38 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-08-30 08:26:37,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:37,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2023-08-30 08:26:37,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:37,253 INFO L130 PetriNetUnfolder]: 52/119 cut-off events. [2023-08-30 08:26:37,253 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:37,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 119 events. 52/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 301 event pairs, 2 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 228. Up to 108 conditions per place. [2023-08-30 08:26:37,255 INFO L137 encePairwiseOnDemand]: 258/269 looper letters, 27 selfloop transitions, 2 changer transitions 1/31 dead transitions. [2023-08-30 08:26:37,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 127 flow [2023-08-30 08:26:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-30 08:26:37,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48451053283767037 [2023-08-30 08:26:37,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-30 08:26:37,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-30 08:26:37,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:37,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-30 08:26:37,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2023-08-30 08:26:37,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-30 08:26:37,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-30 08:26:37,289 INFO L175 Difference]: Start difference. First operand has 34 places, 38 transitions, 81 flow. Second operand 3 states and 391 transitions. [2023-08-30 08:26:37,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 127 flow [2023-08-30 08:26:37,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:37,293 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 65 flow [2023-08-30 08:26:37,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2023-08-30 08:26:37,298 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:26:37,298 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 65 flow [2023-08-30 08:26:37,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-08-30 08:26:37,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:37,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:37,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:26:37,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:37,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1508206433, now seen corresponding path program 1 times [2023-08-30 08:26:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:37,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798322388] [2023-08-30 08:26:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:37,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:37,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798322388] [2023-08-30 08:26:37,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798322388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:37,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:37,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:26:37,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602644063] [2023-08-30 08:26:37,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:37,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:37,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:37,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:37,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:37,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:26:37,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2023-08-30 08:26:37,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:37,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:26:37,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:37,466 INFO L130 PetriNetUnfolder]: 58/134 cut-off events. [2023-08-30 08:26:37,467 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:37,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 134 events. 58/134 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 350 event pairs, 12 based on Foata normal form. 3/110 useless extension candidates. Maximal degree in co-relation 261. Up to 98 conditions per place. [2023-08-30 08:26:37,468 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 30 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-30 08:26:37,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 143 flow [2023-08-30 08:26:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-30 08:26:37,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547707558859975 [2023-08-30 08:26:37,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-30 08:26:37,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-30 08:26:37,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:37,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-30 08:26:37,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2023-08-30 08:26:37,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-30 08:26:37,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-30 08:26:37,473 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 65 flow. Second operand 3 states and 367 transitions. [2023-08-30 08:26:37,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 143 flow [2023-08-30 08:26:37,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 139 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:37,474 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 79 flow [2023-08-30 08:26:37,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-08-30 08:26:37,474 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:26:37,475 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 79 flow [2023-08-30 08:26:37,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2023-08-30 08:26:37,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:37,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:37,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:26:37,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:37,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372441, now seen corresponding path program 1 times [2023-08-30 08:26:37,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:37,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927022123] [2023-08-30 08:26:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:37,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:37,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927022123] [2023-08-30 08:26:37,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927022123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:37,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:37,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:26:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536019002] [2023-08-30 08:26:37,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:37,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:37,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:26:37,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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) [2023-08-30 08:26:37,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:37,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:26:37,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:37,822 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:26:37,824 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:37,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 187 events. 81/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 439 event pairs, 12 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 385. Up to 93 conditions per place. [2023-08-30 08:26:37,829 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 44 selfloop transitions, 7 changer transitions 1/53 dead transitions. [2023-08-30 08:26:37,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 231 flow [2023-08-30 08:26:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:26:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:26:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 726 transitions. [2023-08-30 08:26:37,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385554965480616 [2023-08-30 08:26:37,834 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 726 transitions. [2023-08-30 08:26:37,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 726 transitions. [2023-08-30 08:26:37,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:37,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 726 transitions. [2023-08-30 08:26:37,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.71428571428571) internal successors, (726), 7 states have internal predecessors, (726), 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) [2023-08-30 08:26:37,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 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) [2023-08-30 08:26:37,840 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 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) [2023-08-30 08:26:37,840 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 79 flow. Second operand 7 states and 726 transitions. [2023-08-30 08:26:37,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 231 flow [2023-08-30 08:26:37,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:37,842 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 126 flow [2023-08-30 08:26:37,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-30 08:26:37,843 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-30 08:26:37,843 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 126 flow [2023-08-30 08:26:37,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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) [2023-08-30 08:26:37,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:37,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:37,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:26:37,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:37,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372440, now seen corresponding path program 1 times [2023-08-30 08:26:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:37,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467012256] [2023-08-30 08:26:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:37,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:37,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467012256] [2023-08-30 08:26:37,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467012256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:37,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:37,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:26:37,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983475122] [2023-08-30 08:26:37,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:37,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:37,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:37,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:37,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:38,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:26:38,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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) [2023-08-30 08:26:38,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:38,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:26:38,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:38,112 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:26:38,113 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 08:26:38,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 187 events. 81/187 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 427 event pairs, 6 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 442. Up to 64 conditions per place. [2023-08-30 08:26:38,117 INFO L137 encePairwiseOnDemand]: 261/269 looper letters, 42 selfloop transitions, 9 changer transitions 1/53 dead transitions. [2023-08-30 08:26:38,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 272 flow [2023-08-30 08:26:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:26:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:26:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 725 transitions. [2023-08-30 08:26:38,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38502389803505044 [2023-08-30 08:26:38,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 725 transitions. [2023-08-30 08:26:38,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 725 transitions. [2023-08-30 08:26:38,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:38,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 725 transitions. [2023-08-30 08:26:38,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 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) [2023-08-30 08:26:38,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 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) [2023-08-30 08:26:38,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 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) [2023-08-30 08:26:38,128 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 126 flow. Second operand 7 states and 725 transitions. [2023-08-30 08:26:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 272 flow [2023-08-30 08:26:38,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:38,131 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 145 flow [2023-08-30 08:26:38,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-08-30 08:26:38,132 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-30 08:26:38,132 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 145 flow [2023-08-30 08:26:38,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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) [2023-08-30 08:26:38,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:38,133 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:38,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:26:38,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:38,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265492, now seen corresponding path program 1 times [2023-08-30 08:26:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:38,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725256391] [2023-08-30 08:26:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:38,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725256391] [2023-08-30 08:26:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725256391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492570274] [2023-08-30 08:26:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:38,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:38,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:38,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:26:38,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 08:26:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:38,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:26:38,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:38,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:26:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492570274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:38,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:26:38,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 08:26:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443491774] [2023-08-30 08:26:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:38,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:38,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:26:38,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:26:38,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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) [2023-08-30 08:26:38,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:38,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:26:38,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:38,529 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:26:38,529 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 08:26:38,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 177 events. 77/177 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 382 event pairs, 12 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 440. Up to 140 conditions per place. [2023-08-30 08:26:38,530 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 33 selfloop transitions, 2 changer transitions 1/37 dead transitions. [2023-08-30 08:26:38,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 219 flow [2023-08-30 08:26:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:26:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:26:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 473 transitions. [2023-08-30 08:26:38,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395910780669145 [2023-08-30 08:26:38,532 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 473 transitions. [2023-08-30 08:26:38,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 473 transitions. [2023-08-30 08:26:38,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:38,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 473 transitions. [2023-08-30 08:26:38,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 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) [2023-08-30 08:26:38,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-08-30 08:26:38,535 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-08-30 08:26:38,535 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 145 flow. Second operand 4 states and 473 transitions. [2023-08-30 08:26:38,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 219 flow [2023-08-30 08:26:38,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 201 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 08:26:38,536 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 123 flow [2023-08-30 08:26:38,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-30 08:26:38,537 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-30 08:26:38,537 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 123 flow [2023-08-30 08:26:38,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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) [2023-08-30 08:26:38,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:38,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:38,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 08:26:38,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:38,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:38,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265468, now seen corresponding path program 1 times [2023-08-30 08:26:38,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:38,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524430056] [2023-08-30 08:26:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524430056] [2023-08-30 08:26:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524430056] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641817866] [2023-08-30 08:26:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:38,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:38,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:26:38,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 08:26:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:38,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:26:38,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:38,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:38,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641817866] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:38,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:38,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 08:26:38,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095575904] [2023-08-30 08:26:38,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:38,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:26:38,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:38,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:26:38,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:26:38,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 269 [2023-08-30 08:26:38,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 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) [2023-08-30 08:26:38,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:38,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 269 [2023-08-30 08:26:38,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:39,063 INFO L130 PetriNetUnfolder]: 79/182 cut-off events. [2023-08-30 08:26:39,064 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 08:26:39,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 182 events. 79/182 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 406 event pairs, 12 based on Foata normal form. 3/179 useless extension candidates. Maximal degree in co-relation 429. Up to 87 conditions per place. [2023-08-30 08:26:39,065 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 40 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2023-08-30 08:26:39,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 241 flow [2023-08-30 08:26:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:26:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:26:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-08-30 08:26:39,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43271375464684014 [2023-08-30 08:26:39,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-08-30 08:26:39,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-08-30 08:26:39,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:39,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-08-30 08:26:39,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 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) [2023-08-30 08:26:39,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 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) [2023-08-30 08:26:39,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 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) [2023-08-30 08:26:39,071 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 123 flow. Second operand 5 states and 582 transitions. [2023-08-30 08:26:39,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 241 flow [2023-08-30 08:26:39,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:39,075 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 132 flow [2023-08-30 08:26:39,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-08-30 08:26:39,077 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-30 08:26:39,077 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 132 flow [2023-08-30 08:26:39,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 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) [2023-08-30 08:26:39,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:39,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:39,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 08:26:39,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 08:26:39,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:39,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916078, now seen corresponding path program 1 times [2023-08-30 08:26:39,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:39,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196844265] [2023-08-30 08:26:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:39,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:26:39,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196844265] [2023-08-30 08:26:39,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196844265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:39,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:39,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755542049] [2023-08-30 08:26:39,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:39,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:39,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:39,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:39,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:26:39,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-08-30 08:26:39,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:39,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:26:39,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:39,398 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:26:39,398 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 08:26:39,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 177 events. 77/177 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 377 event pairs, 6 based on Foata normal form. 3/174 useless extension candidates. Maximal degree in co-relation 431. Up to 155 conditions per place. [2023-08-30 08:26:39,399 INFO L137 encePairwiseOnDemand]: 267/269 looper letters, 32 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 08:26:39,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 198 flow [2023-08-30 08:26:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-30 08:26:39,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423791821561338 [2023-08-30 08:26:39,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-30 08:26:39,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-30 08:26:39,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:39,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-30 08:26:39,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-08-30 08:26:39,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-30 08:26:39,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-30 08:26:39,402 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 132 flow. Second operand 3 states and 357 transitions. [2023-08-30 08:26:39,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 198 flow [2023-08-30 08:26:39,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 193 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:39,404 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 125 flow [2023-08-30 08:26:39,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-30 08:26:39,404 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-30 08:26:39,404 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 125 flow [2023-08-30 08:26:39,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-08-30 08:26:39,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:39,405 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:39,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:26:39,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:39,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:39,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916077, now seen corresponding path program 1 times [2023-08-30 08:26:39,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519812537] [2023-08-30 08:26:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:39,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:39,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519812537] [2023-08-30 08:26:39,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519812537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:39,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126446073] [2023-08-30 08:26:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:39,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:39,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:39,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:26:39,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 08:26:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:39,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:26:39,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:39,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:39,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126446073] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:39,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:39,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 08:26:39,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792501955] [2023-08-30 08:26:39,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:39,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:26:39,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:26:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:26:39,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 269 [2023-08-30 08:26:39,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 125 flow. Second operand has 13 states, 13 states have (on average 95.07692307692308) internal successors, (1236), 13 states have internal predecessors, (1236), 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) [2023-08-30 08:26:39,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:39,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 269 [2023-08-30 08:26:39,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:40,063 INFO L130 PetriNetUnfolder]: 103/233 cut-off events. [2023-08-30 08:26:40,063 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 08:26:40,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 233 events. 103/233 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 527 event pairs, 6 based on Foata normal form. 6/230 useless extension candidates. Maximal degree in co-relation 561. Up to 69 conditions per place. [2023-08-30 08:26:40,064 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2023-08-30 08:26:40,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 357 flow [2023-08-30 08:26:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:26:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:26:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1163 transitions. [2023-08-30 08:26:40,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36028500619578685 [2023-08-30 08:26:40,068 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1163 transitions. [2023-08-30 08:26:40,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1163 transitions. [2023-08-30 08:26:40,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:40,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1163 transitions. [2023-08-30 08:26:40,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.91666666666667) internal successors, (1163), 12 states have internal predecessors, (1163), 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) [2023-08-30 08:26:40,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 269.0) internal successors, (3497), 13 states have internal predecessors, (3497), 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) [2023-08-30 08:26:40,075 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 269.0) internal successors, (3497), 13 states have internal predecessors, (3497), 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) [2023-08-30 08:26:40,075 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 125 flow. Second operand 12 states and 1163 transitions. [2023-08-30 08:26:40,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 357 flow [2023-08-30 08:26:40,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:40,077 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-30 08:26:40,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-30 08:26:40,079 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-30 08:26:40,079 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-30 08:26:40,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 95.07692307692308) internal successors, (1236), 13 states have internal predecessors, (1236), 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) [2023-08-30 08:26:40,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 08:26:40,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 08:26:40,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 08:26:40,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 08:26:40,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 08:26:40,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 08:26:40,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 08:26:40,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 08:26:40,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 08:26:40,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 08:26:40,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 08:26:40,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 08:26:40,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 08:26:40,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 08:26:40,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 08:26:40,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 08:26:40,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 08:26:40,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 08:26:40,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 08:26:40,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 08:26:40,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 08:26:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:40,291 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:40,292 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 08:26:40,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:40,307 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:26:40,307 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:40,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:26:40,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:40,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:40,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:40,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:40,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:40,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:40,315 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:26:40,315 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:40,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:26:40,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:26:44,548 INFO L134 LiptonReduction]: Checked pairs total: 2879 [2023-08-30 08:26:44,548 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:26:44,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:26:44,550 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7cffb5e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:44,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:26:44,551 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 08:26:44,551 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:44,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:44,552 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 08:26:44,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:26:44,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1827183085, now seen corresponding path program 1 times [2023-08-30 08:26:44,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:44,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557368658] [2023-08-30 08:26:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:44,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:44,562 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:26:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:44,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:26:44,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:26:44,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:26:44,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:26:44,582 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:26:44,583 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:26:44,583 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:26:44,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 08:26:44,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:26:44,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:44,652 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:26:44,653 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:44,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:26:44,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:44,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:44,656 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:44,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:44,657 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:44,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:44,681 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:26:44,682 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:44,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:26:44,691 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:26:48,763 INFO L134 LiptonReduction]: Checked pairs total: 72746 [2023-08-30 08:26:48,763 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-30 08:26:48,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:26:48,766 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7cffb5e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:48,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-30 08:26:48,768 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:26:48,768 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:48,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:48,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:48,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:48,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash -104723753, now seen corresponding path program 1 times [2023-08-30 08:26:48,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:48,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464745173] [2023-08-30 08:26:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:48,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464745173] [2023-08-30 08:26:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464745173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:48,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:26:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336382700] [2023-08-30 08:26:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:26:48,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:26:48,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 100 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 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) [2023-08-30 08:26:48,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:48,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:26:48,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:49,205 INFO L130 PetriNetUnfolder]: 1931/3617 cut-off events. [2023-08-30 08:26:49,205 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-30 08:26:49,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 3617 events. 1931/3617 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23884 event pairs, 689 based on Foata normal form. 0/2596 useless extension candidates. Maximal degree in co-relation 6132. Up to 2397 conditions per place. [2023-08-30 08:26:49,218 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 105 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2023-08-30 08:26:49,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 550 flow [2023-08-30 08:26:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:26:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:26:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1111 transitions. [2023-08-30 08:26:49,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419512195121952 [2023-08-30 08:26:49,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1111 transitions. [2023-08-30 08:26:49,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1111 transitions. [2023-08-30 08:26:49,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:49,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1111 transitions. [2023-08-30 08:26:49,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 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) [2023-08-30 08:26:49,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 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) [2023-08-30 08:26:49,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 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) [2023-08-30 08:26:49,225 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 212 flow. Second operand 5 states and 1111 transitions. [2023-08-30 08:26:49,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 550 flow [2023-08-30 08:26:49,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 548 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:49,227 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 266 flow [2023-08-30 08:26:49,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=96, PETRI_TRANSITIONS=100} [2023-08-30 08:26:49,228 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-08-30 08:26:49,228 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 266 flow [2023-08-30 08:26:49,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 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) [2023-08-30 08:26:49,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:49,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:49,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:26:49,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:49,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1121630105, now seen corresponding path program 1 times [2023-08-30 08:26:49,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:49,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007479934] [2023-08-30 08:26:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:49,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:49,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007479934] [2023-08-30 08:26:49,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007479934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:49,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:49,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:26:49,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060720115] [2023-08-30 08:26:49,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:49,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:49,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:49,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:49,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 410 [2023-08-30 08:26:49,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-08-30 08:26:49,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:49,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 410 [2023-08-30 08:26:49,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:49,604 INFO L130 PetriNetUnfolder]: 2391/4277 cut-off events. [2023-08-30 08:26:49,604 INFO L131 PetriNetUnfolder]: For 925/935 co-relation queries the response was YES. [2023-08-30 08:26:49,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8829 conditions, 4277 events. 2391/4277 cut-off events. For 925/935 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 29528 event pairs, 1859 based on Foata normal form. 302/3767 useless extension candidates. Maximal degree in co-relation 6144. Up to 3787 conditions per place. [2023-08-30 08:26:49,624 INFO L137 encePairwiseOnDemand]: 403/410 looper letters, 62 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-30 08:26:49,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 94 transitions, 380 flow [2023-08-30 08:26:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-30 08:26:49,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170731707317073 [2023-08-30 08:26:49,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-30 08:26:49,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-30 08:26:49,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:49,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-30 08:26:49,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-08-30 08:26:49,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:49,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:49,630 INFO L175 Difference]: Start difference. First operand has 96 places, 100 transitions, 266 flow. Second operand 3 states and 636 transitions. [2023-08-30 08:26:49,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 94 transitions, 380 flow [2023-08-30 08:26:49,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 94 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:49,633 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 256 flow [2023-08-30 08:26:49,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-08-30 08:26:49,634 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-08-30 08:26:49,634 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 256 flow [2023-08-30 08:26:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-08-30 08:26:49,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:49,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:49,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:26:49,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:49,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash -410793662, now seen corresponding path program 1 times [2023-08-30 08:26:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:49,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345203095] [2023-08-30 08:26:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:49,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:49,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345203095] [2023-08-30 08:26:49,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345203095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:49,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:49,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:26:49,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894111619] [2023-08-30 08:26:49,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:49,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:49,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:49,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:49,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2023-08-30 08:26:49,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2023-08-30 08:26:49,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:49,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2023-08-30 08:26:49,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:50,148 INFO L130 PetriNetUnfolder]: 2769/5103 cut-off events. [2023-08-30 08:26:50,148 INFO L131 PetriNetUnfolder]: For 1140/1150 co-relation queries the response was YES. [2023-08-30 08:26:50,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10444 conditions, 5103 events. 2769/5103 cut-off events. For 1140/1150 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 36391 event pairs, 755 based on Foata normal form. 170/4507 useless extension candidates. Maximal degree in co-relation 10430. Up to 3993 conditions per place. [2023-08-30 08:26:50,178 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 84 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 08:26:50,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 116 transitions, 507 flow [2023-08-30 08:26:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-30 08:26:50,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317073170731708 [2023-08-30 08:26:50,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-30 08:26:50,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-30 08:26:50,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:50,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-30 08:26:50,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 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) [2023-08-30 08:26:50,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:50,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:50,185 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 256 flow. Second operand 3 states and 654 transitions. [2023-08-30 08:26:50,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 116 transitions, 507 flow [2023-08-30 08:26:50,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 116 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:50,188 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 288 flow [2023-08-30 08:26:50,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2023-08-30 08:26:50,189 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:26:50,189 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 288 flow [2023-08-30 08:26:50,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2023-08-30 08:26:50,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:50,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:50,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 08:26:50,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:50,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478144, now seen corresponding path program 1 times [2023-08-30 08:26:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:50,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82983014] [2023-08-30 08:26:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:50,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:50,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82983014] [2023-08-30 08:26:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82983014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:50,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:50,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:50,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779706179] [2023-08-30 08:26:50,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:50,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:50,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:50,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:50,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:26:50,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-08-30 08:26:50,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:50,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:26:50,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:50,604 INFO L130 PetriNetUnfolder]: 2080/4294 cut-off events. [2023-08-30 08:26:50,604 INFO L131 PetriNetUnfolder]: For 910/920 co-relation queries the response was YES. [2023-08-30 08:26:50,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 4294 events. 2080/4294 cut-off events. For 910/920 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 31085 event pairs, 1449 based on Foata normal form. 10/3598 useless extension candidates. Maximal degree in co-relation 8652. Up to 3022 conditions per place. [2023-08-30 08:26:50,621 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 75 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 08:26:50,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 511 flow [2023-08-30 08:26:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-30 08:26:50,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536585365853659 [2023-08-30 08:26:50,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-30 08:26:50,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-30 08:26:50,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:50,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-30 08:26:50,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 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) [2023-08-30 08:26:50,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:50,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:50,627 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 288 flow. Second operand 3 states and 681 transitions. [2023-08-30 08:26:50,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 511 flow [2023-08-30 08:26:50,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 121 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:50,629 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 293 flow [2023-08-30 08:26:50,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2023-08-30 08:26:50,630 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:26:50,630 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 293 flow [2023-08-30 08:26:50,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-08-30 08:26:50,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:50,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:50,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 08:26:50,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:50,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478172, now seen corresponding path program 1 times [2023-08-30 08:26:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:50,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505476238] [2023-08-30 08:26:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:50,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:50,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:50,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505476238] [2023-08-30 08:26:50,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505476238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:50,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121702818] [2023-08-30 08:26:50,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:50,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:50,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:50,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:50,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:50,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:26:50,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-08-30 08:26:50,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:50,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:26:50,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:50,995 INFO L130 PetriNetUnfolder]: 2005/4147 cut-off events. [2023-08-30 08:26:50,995 INFO L131 PetriNetUnfolder]: For 1019/1029 co-relation queries the response was YES. [2023-08-30 08:26:51,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8561 conditions, 4147 events. 2005/4147 cut-off events. For 1019/1029 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29806 event pairs, 1384 based on Foata normal form. 10/3513 useless extension candidates. Maximal degree in co-relation 8545. Up to 2901 conditions per place. [2023-08-30 08:26:51,011 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 75 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-08-30 08:26:51,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 120 transitions, 512 flow [2023-08-30 08:26:51,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2023-08-30 08:26:51,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2023-08-30 08:26:51,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2023-08-30 08:26:51,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2023-08-30 08:26:51,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:51,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2023-08-30 08:26:51,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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) [2023-08-30 08:26:51,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:51,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:51,016 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 293 flow. Second operand 3 states and 680 transitions. [2023-08-30 08:26:51,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 120 transitions, 512 flow [2023-08-30 08:26:51,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 120 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:51,020 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 289 flow [2023-08-30 08:26:51,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=93, PETRI_TRANSITIONS=94} [2023-08-30 08:26:51,021 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-08-30 08:26:51,021 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 289 flow [2023-08-30 08:26:51,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-08-30 08:26:51,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:51,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:51,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 08:26:51,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:51,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:51,022 INFO L85 PathProgramCache]: Analyzing trace with hash 199884839, now seen corresponding path program 1 times [2023-08-30 08:26:51,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:51,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439695313] [2023-08-30 08:26:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:51,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:51,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439695313] [2023-08-30 08:26:51,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439695313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:51,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:51,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:26:51,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509991700] [2023-08-30 08:26:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:51,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:51,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:51,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:26:51,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 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) [2023-08-30 08:26:51,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:51,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:26:51,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:51,849 INFO L130 PetriNetUnfolder]: 4089/7201 cut-off events. [2023-08-30 08:26:51,849 INFO L131 PetriNetUnfolder]: For 2141/2175 co-relation queries the response was YES. [2023-08-30 08:26:51,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16003 conditions, 7201 events. 4089/7201 cut-off events. For 2141/2175 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 51374 event pairs, 863 based on Foata normal form. 10/6198 useless extension candidates. Maximal degree in co-relation 15987. Up to 2650 conditions per place. [2023-08-30 08:26:51,919 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 203 selfloop transitions, 16 changer transitions 0/247 dead transitions. [2023-08-30 08:26:51,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 247 transitions, 1175 flow [2023-08-30 08:26:51,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:26:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:26:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1607 transitions. [2023-08-30 08:26:51,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899390243902439 [2023-08-30 08:26:51,923 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1607 transitions. [2023-08-30 08:26:51,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1607 transitions. [2023-08-30 08:26:51,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:51,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1607 transitions. [2023-08-30 08:26:51,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 200.875) internal successors, (1607), 8 states have internal predecessors, (1607), 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) [2023-08-30 08:26:51,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 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) [2023-08-30 08:26:51,929 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 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) [2023-08-30 08:26:51,930 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 289 flow. Second operand 8 states and 1607 transitions. [2023-08-30 08:26:51,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 247 transitions, 1175 flow [2023-08-30 08:26:51,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 247 transitions, 1161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:51,934 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 375 flow [2023-08-30 08:26:51,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2023-08-30 08:26:51,935 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 11 predicate places. [2023-08-30 08:26:51,935 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 375 flow [2023-08-30 08:26:51,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 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) [2023-08-30 08:26:51,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:51,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:51,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:26:51,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:51,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash 199884838, now seen corresponding path program 1 times [2023-08-30 08:26:51,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:51,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311337629] [2023-08-30 08:26:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:51,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:51,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:51,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311337629] [2023-08-30 08:26:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311337629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:51,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:51,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:51,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677282440] [2023-08-30 08:26:51,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:51,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:51,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:51,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:51,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:51,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:26:51,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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) [2023-08-30 08:26:51,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:51,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:26:51,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:52,442 INFO L130 PetriNetUnfolder]: 2892/5574 cut-off events. [2023-08-30 08:26:52,442 INFO L131 PetriNetUnfolder]: For 1987/1997 co-relation queries the response was YES. [2023-08-30 08:26:52,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12500 conditions, 5574 events. 2892/5574 cut-off events. For 1987/1997 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 40451 event pairs, 991 based on Foata normal form. 106/4903 useless extension candidates. Maximal degree in co-relation 12479. Up to 3501 conditions per place. [2023-08-30 08:26:52,467 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 84 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-30 08:26:52,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 130 transitions, 608 flow [2023-08-30 08:26:52,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-08-30 08:26:52,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540650406504065 [2023-08-30 08:26:52,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-08-30 08:26:52,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-08-30 08:26:52,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:52,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-08-30 08:26:52,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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) [2023-08-30 08:26:52,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:52,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:52,473 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 375 flow. Second operand 3 states and 665 transitions. [2023-08-30 08:26:52,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 130 transitions, 608 flow [2023-08-30 08:26:52,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 130 transitions, 603 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:52,478 INFO L231 Difference]: Finished difference. Result has 103 places, 104 transitions, 374 flow [2023-08-30 08:26:52,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=103, PETRI_TRANSITIONS=104} [2023-08-30 08:26:52,478 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:26:52,478 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 104 transitions, 374 flow [2023-08-30 08:26:52,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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) [2023-08-30 08:26:52,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:52,479 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:52,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 08:26:52,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:52,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:52,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002933, now seen corresponding path program 1 times [2023-08-30 08:26:52,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:52,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279038050] [2023-08-30 08:26:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:52,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:52,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279038050] [2023-08-30 08:26:52,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279038050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:52,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:52,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:52,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143267636] [2023-08-30 08:26:52,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:52,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:52,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:52,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:52,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:26:52,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 104 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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) [2023-08-30 08:26:52,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:52,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:26:52,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:52,965 INFO L130 PetriNetUnfolder]: 2873/5599 cut-off events. [2023-08-30 08:26:52,966 INFO L131 PetriNetUnfolder]: For 2085/2095 co-relation queries the response was YES. [2023-08-30 08:26:52,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12688 conditions, 5599 events. 2873/5599 cut-off events. For 2085/2095 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 40802 event pairs, 1950 based on Foata normal form. 10/4879 useless extension candidates. Maximal degree in co-relation 12667. Up to 4197 conditions per place. [2023-08-30 08:26:52,988 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 84 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2023-08-30 08:26:52,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 133 transitions, 675 flow [2023-08-30 08:26:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-08-30 08:26:52,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479674796747968 [2023-08-30 08:26:52,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-08-30 08:26:52,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-08-30 08:26:52,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:52,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-08-30 08:26:52,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 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) [2023-08-30 08:26:52,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:52,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:52,994 INFO L175 Difference]: Start difference. First operand has 103 places, 104 transitions, 374 flow. Second operand 3 states and 674 transitions. [2023-08-30 08:26:52,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 133 transitions, 675 flow [2023-08-30 08:26:52,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 133 transitions, 675 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:52,998 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 382 flow [2023-08-30 08:26:52,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2023-08-30 08:26:52,998 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2023-08-30 08:26:52,998 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 382 flow [2023-08-30 08:26:52,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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) [2023-08-30 08:26:52,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:52,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:52,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 08:26:52,999 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:52,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:52,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002935, now seen corresponding path program 1 times [2023-08-30 08:26:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:53,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867612250] [2023-08-30 08:26:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:53,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:53,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867612250] [2023-08-30 08:26:53,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867612250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:53,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:53,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124605800] [2023-08-30 08:26:53,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:53,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:53,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:53,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:26:53,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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) [2023-08-30 08:26:53,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:53,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:26:53,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:53,491 INFO L130 PetriNetUnfolder]: 2754/5402 cut-off events. [2023-08-30 08:26:53,491 INFO L131 PetriNetUnfolder]: For 2149/2159 co-relation queries the response was YES. [2023-08-30 08:26:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12521 conditions, 5402 events. 2754/5402 cut-off events. For 2149/2159 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 39150 event pairs, 1857 based on Foata normal form. 10/4770 useless extension candidates. Maximal degree in co-relation 12499. Up to 4000 conditions per place. [2023-08-30 08:26:53,522 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 84 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2023-08-30 08:26:53,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 132 transitions, 679 flow [2023-08-30 08:26:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-30 08:26:53,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471544715447154 [2023-08-30 08:26:53,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-30 08:26:53,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-30 08:26:53,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:53,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-30 08:26:53,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2023-08-30 08:26:53,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:53,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:53,528 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 382 flow. Second operand 3 states and 673 transitions. [2023-08-30 08:26:53,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 132 transitions, 679 flow [2023-08-30 08:26:53,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 132 transitions, 671 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:53,533 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 378 flow [2023-08-30 08:26:53,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-08-30 08:26:53,533 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:26:53,534 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 378 flow [2023-08-30 08:26:53,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 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) [2023-08-30 08:26:53,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:53,534 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:53,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 08:26:53,534 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:53,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash 854518012, now seen corresponding path program 1 times [2023-08-30 08:26:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135700938] [2023-08-30 08:26:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:53,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:53,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135700938] [2023-08-30 08:26:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135700938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:53,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:53,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:26:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837865057] [2023-08-30 08:26:53,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:53,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:53,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:53,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:53,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:53,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:26:53,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 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) [2023-08-30 08:26:53,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:53,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:26:53,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:54,738 INFO L130 PetriNetUnfolder]: 5826/10024 cut-off events. [2023-08-30 08:26:54,738 INFO L131 PetriNetUnfolder]: For 4507/4543 co-relation queries the response was YES. [2023-08-30 08:26:54,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24509 conditions, 10024 events. 5826/10024 cut-off events. For 4507/4543 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 72007 event pairs, 1536 based on Foata normal form. 10/9014 useless extension candidates. Maximal degree in co-relation 24487. Up to 3870 conditions per place. [2023-08-30 08:26:54,798 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 220 selfloop transitions, 18 changer transitions 0/267 dead transitions. [2023-08-30 08:26:54,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 267 transitions, 1516 flow [2023-08-30 08:26:54,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:26:54,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:26:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1590 transitions. [2023-08-30 08:26:54,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2023-08-30 08:26:54,803 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1590 transitions. [2023-08-30 08:26:54,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1590 transitions. [2023-08-30 08:26:54,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:54,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1590 transitions. [2023-08-30 08:26:54,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.75) internal successors, (1590), 8 states have internal predecessors, (1590), 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) [2023-08-30 08:26:54,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 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) [2023-08-30 08:26:54,812 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 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) [2023-08-30 08:26:54,812 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 378 flow. Second operand 8 states and 1590 transitions. [2023-08-30 08:26:54,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 267 transitions, 1516 flow [2023-08-30 08:26:54,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 267 transitions, 1502 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:54,824 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 474 flow [2023-08-30 08:26:54,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=474, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2023-08-30 08:26:54,825 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 21 predicate places. [2023-08-30 08:26:54,825 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 474 flow [2023-08-30 08:26:54,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 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) [2023-08-30 08:26:54,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:54,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:54,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 08:26:54,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:54,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash 854518013, now seen corresponding path program 1 times [2023-08-30 08:26:54,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:54,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305150027] [2023-08-30 08:26:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:54,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:54,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:54,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305150027] [2023-08-30 08:26:54,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305150027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:54,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:54,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:54,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383097476] [2023-08-30 08:26:54,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:54,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:54,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:54,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:26:54,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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) [2023-08-30 08:26:54,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:54,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:26:54,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:55,894 INFO L130 PetriNetUnfolder]: 4161/7847 cut-off events. [2023-08-30 08:26:55,894 INFO L131 PetriNetUnfolder]: For 4337/4349 co-relation queries the response was YES. [2023-08-30 08:26:55,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19478 conditions, 7847 events. 4161/7847 cut-off events. For 4337/4349 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 56785 event pairs, 1340 based on Foata normal form. 148/7309 useless extension candidates. Maximal degree in co-relation 19451. Up to 5149 conditions per place. [2023-08-30 08:26:55,936 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 94 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-08-30 08:26:55,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 791 flow [2023-08-30 08:26:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-08-30 08:26:55,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349593495934959 [2023-08-30 08:26:55,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-08-30 08:26:55,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-08-30 08:26:55,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:55,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-08-30 08:26:55,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2023-08-30 08:26:55,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:55,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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) [2023-08-30 08:26:55,941 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 474 flow. Second operand 3 states and 658 transitions. [2023-08-30 08:26:55,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 791 flow [2023-08-30 08:26:55,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 143 transitions, 791 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:55,951 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 478 flow [2023-08-30 08:26:55,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2023-08-30 08:26:55,952 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 23 predicate places. [2023-08-30 08:26:55,952 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 478 flow [2023-08-30 08:26:55,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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) [2023-08-30 08:26:55,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:55,952 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:55,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 08:26:55,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:55,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:55,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1293225098, now seen corresponding path program 1 times [2023-08-30 08:26:55,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:55,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027835911] [2023-08-30 08:26:55,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:55,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:55,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:55,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027835911] [2023-08-30 08:26:55,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027835911] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:55,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182234014] [2023-08-30 08:26:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:55,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:55,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:55,994 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:26:55,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 08:26:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:56,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:26:56,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:56,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:56,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182234014] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:56,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:56,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 08:26:56,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345245304] [2023-08-30 08:26:56,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:56,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:56,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:56,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:56,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 410 [2023-08-30 08:26:56,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 188.66666666666666) internal successors, (1132), 6 states have internal predecessors, (1132), 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) [2023-08-30 08:26:56,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:56,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 410 [2023-08-30 08:26:56,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:59,315 INFO L130 PetriNetUnfolder]: 15115/25247 cut-off events. [2023-08-30 08:26:59,315 INFO L131 PetriNetUnfolder]: For 14072/14144 co-relation queries the response was YES. [2023-08-30 08:26:59,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64534 conditions, 25247 events. 15115/25247 cut-off events. For 14072/14144 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 185005 event pairs, 681 based on Foata normal form. 1660/25285 useless extension candidates. Maximal degree in co-relation 64506. Up to 8274 conditions per place. [2023-08-30 08:26:59,500 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 259 selfloop transitions, 19 changer transitions 0/303 dead transitions. [2023-08-30 08:26:59,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 303 transitions, 1749 flow [2023-08-30 08:26:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:26:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:26:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1339 transitions. [2023-08-30 08:26:59,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443089430894309 [2023-08-30 08:26:59,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1339 transitions. [2023-08-30 08:26:59,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1339 transitions. [2023-08-30 08:26:59,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:59,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1339 transitions. [2023-08-30 08:26:59,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 223.16666666666666) internal successors, (1339), 6 states have internal predecessors, (1339), 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) [2023-08-30 08:26:59,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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) [2023-08-30 08:26:59,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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) [2023-08-30 08:26:59,511 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 478 flow. Second operand 6 states and 1339 transitions. [2023-08-30 08:26:59,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 303 transitions, 1749 flow [2023-08-30 08:26:59,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 303 transitions, 1749 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:59,575 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 607 flow [2023-08-30 08:26:59,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=607, PETRI_PLACES=121, PETRI_TRANSITIONS=120} [2023-08-30 08:26:59,575 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 30 predicate places. [2023-08-30 08:26:59,575 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 607 flow [2023-08-30 08:26:59,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.66666666666666) internal successors, (1132), 6 states have internal predecessors, (1132), 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) [2023-08-30 08:26:59,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:59,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:59,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 08:26:59,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:59,782 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:59,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:59,783 INFO L85 PathProgramCache]: Analyzing trace with hash 727042415, now seen corresponding path program 1 times [2023-08-30 08:26:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:59,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369626656] [2023-08-30 08:26:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:59,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:59,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369626656] [2023-08-30 08:26:59,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369626656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:59,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:59,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:26:59,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834097215] [2023-08-30 08:26:59,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:59,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:26:59,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:26:59,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:26:59,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 410 [2023-08-30 08:26:59,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 607 flow. Second operand has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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) [2023-08-30 08:26:59,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:59,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 410 [2023-08-30 08:26:59,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:02,662 INFO L130 PetriNetUnfolder]: 14018/24610 cut-off events. [2023-08-30 08:27:02,662 INFO L131 PetriNetUnfolder]: For 17219/17383 co-relation queries the response was YES. [2023-08-30 08:27:02,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64543 conditions, 24610 events. 14018/24610 cut-off events. For 17219/17383 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 187080 event pairs, 6560 based on Foata normal form. 308/23058 useless extension candidates. Maximal degree in co-relation 64509. Up to 11792 conditions per place. [2023-08-30 08:27:02,876 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 140 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2023-08-30 08:27:02,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 196 transitions, 1232 flow [2023-08-30 08:27:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:27:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:27:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1031 transitions. [2023-08-30 08:27:02,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029268292682927 [2023-08-30 08:27:02,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1031 transitions. [2023-08-30 08:27:02,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1031 transitions. [2023-08-30 08:27:02,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:02,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1031 transitions. [2023-08-30 08:27:02,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.2) internal successors, (1031), 5 states have internal predecessors, (1031), 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) [2023-08-30 08:27:02,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 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) [2023-08-30 08:27:02,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 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) [2023-08-30 08:27:02,883 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 607 flow. Second operand 5 states and 1031 transitions. [2023-08-30 08:27:02,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 196 transitions, 1232 flow [2023-08-30 08:27:02,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 196 transitions, 1216 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 08:27:02,925 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 640 flow [2023-08-30 08:27:02,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=640, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2023-08-30 08:27:02,925 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 34 predicate places. [2023-08-30 08:27:02,925 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 640 flow [2023-08-30 08:27:02,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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) [2023-08-30 08:27:02,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:02,926 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:02,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 08:27:02,926 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:02,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:02,927 INFO L85 PathProgramCache]: Analyzing trace with hash -573214515, now seen corresponding path program 1 times [2023-08-30 08:27:02,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:02,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226335775] [2023-08-30 08:27:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:02,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:03,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:03,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226335775] [2023-08-30 08:27:03,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226335775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:03,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:03,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:27:03,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132284939] [2023-08-30 08:27:03,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:03,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:27:03,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:03,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:27:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:27:03,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 410 [2023-08-30 08:27:03,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 640 flow. Second operand has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 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) [2023-08-30 08:27:03,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:03,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 410 [2023-08-30 08:27:03,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:06,122 INFO L130 PetriNetUnfolder]: 15367/26995 cut-off events. [2023-08-30 08:27:06,122 INFO L131 PetriNetUnfolder]: For 22426/22572 co-relation queries the response was YES. [2023-08-30 08:27:06,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72760 conditions, 26995 events. 15367/26995 cut-off events. For 22426/22572 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 202947 event pairs, 7556 based on Foata normal form. 324/25259 useless extension candidates. Maximal degree in co-relation 72724. Up to 12636 conditions per place. [2023-08-30 08:27:06,277 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 148 selfloop transitions, 9 changer transitions 0/204 dead transitions. [2023-08-30 08:27:06,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 204 transitions, 1371 flow [2023-08-30 08:27:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:27:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:27:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2023-08-30 08:27:06,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019512195121951 [2023-08-30 08:27:06,281 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2023-08-30 08:27:06,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2023-08-30 08:27:06,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:06,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2023-08-30 08:27:06,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 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) [2023-08-30 08:27:06,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 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) [2023-08-30 08:27:06,284 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 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) [2023-08-30 08:27:06,284 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 640 flow. Second operand 5 states and 1029 transitions. [2023-08-30 08:27:06,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 204 transitions, 1371 flow [2023-08-30 08:27:06,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 204 transitions, 1335 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 08:27:06,338 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 671 flow [2023-08-30 08:27:06,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=671, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2023-08-30 08:27:06,339 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 36 predicate places. [2023-08-30 08:27:06,339 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 671 flow [2023-08-30 08:27:06,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 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) [2023-08-30 08:27:06,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:06,339 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:06,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 08:27:06,340 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:06,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1799240676, now seen corresponding path program 1 times [2023-08-30 08:27:06,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:06,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254416941] [2023-08-30 08:27:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:06,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:06,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:06,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254416941] [2023-08-30 08:27:06,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254416941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:06,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:06,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:27:06,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260767984] [2023-08-30 08:27:06,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:06,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:27:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:27:06,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:27:06,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:27:06,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 671 flow. Second operand has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 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) [2023-08-30 08:27:06,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:06,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:27:06,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:10,879 INFO L130 PetriNetUnfolder]: 18568/32076 cut-off events. [2023-08-30 08:27:10,879 INFO L131 PetriNetUnfolder]: For 32369/32561 co-relation queries the response was YES. [2023-08-30 08:27:10,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89874 conditions, 32076 events. 18568/32076 cut-off events. For 32369/32561 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 247186 event pairs, 3886 based on Foata normal form. 304/30058 useless extension candidates. Maximal degree in co-relation 89837. Up to 18466 conditions per place. [2023-08-30 08:27:11,064 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 303 selfloop transitions, 31 changer transitions 0/369 dead transitions. [2023-08-30 08:27:11,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 369 transitions, 2501 flow [2023-08-30 08:27:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:27:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:27:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2354 transitions. [2023-08-30 08:27:11,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47845528455284553 [2023-08-30 08:27:11,066 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2354 transitions. [2023-08-30 08:27:11,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2354 transitions. [2023-08-30 08:27:11,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:11,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2354 transitions. [2023-08-30 08:27:11,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.16666666666666) internal successors, (2354), 12 states have internal predecessors, (2354), 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) [2023-08-30 08:27:11,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 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) [2023-08-30 08:27:11,073 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 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) [2023-08-30 08:27:11,074 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 671 flow. Second operand 12 states and 2354 transitions. [2023-08-30 08:27:11,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 369 transitions, 2501 flow [2023-08-30 08:27:11,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 369 transitions, 2481 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:27:11,163 INFO L231 Difference]: Finished difference. Result has 138 places, 136 transitions, 839 flow [2023-08-30 08:27:11,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=839, PETRI_PLACES=138, PETRI_TRANSITIONS=136} [2023-08-30 08:27:11,164 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 47 predicate places. [2023-08-30 08:27:11,164 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 839 flow [2023-08-30 08:27:11,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 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) [2023-08-30 08:27:11,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:11,165 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:11,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 08:27:11,165 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:11,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash -304450102, now seen corresponding path program 1 times [2023-08-30 08:27:11,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:11,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486534792] [2023-08-30 08:27:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:11,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:11,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:11,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486534792] [2023-08-30 08:27:11,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486534792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:11,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:11,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:27:11,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82235544] [2023-08-30 08:27:11,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:11,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:27:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:11,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:27:11,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:27:11,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:27:11,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 136 transitions, 839 flow. Second operand has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 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) [2023-08-30 08:27:11,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:11,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:27:11,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:16,043 INFO L130 PetriNetUnfolder]: 21173/36309 cut-off events. [2023-08-30 08:27:16,044 INFO L131 PetriNetUnfolder]: For 50675/50923 co-relation queries the response was YES. [2023-08-30 08:27:16,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105759 conditions, 36309 events. 21173/36309 cut-off events. For 50675/50923 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 285936 event pairs, 4921 based on Foata normal form. 340/33984 useless extension candidates. Maximal degree in co-relation 105719. Up to 20935 conditions per place. [2023-08-30 08:27:16,375 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 313 selfloop transitions, 34 changer transitions 0/383 dead transitions. [2023-08-30 08:27:16,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 383 transitions, 2866 flow [2023-08-30 08:27:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:27:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:27:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2360 transitions. [2023-08-30 08:27:16,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-08-30 08:27:16,378 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2360 transitions. [2023-08-30 08:27:16,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2360 transitions. [2023-08-30 08:27:16,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:16,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2360 transitions. [2023-08-30 08:27:16,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.66666666666666) internal successors, (2360), 12 states have internal predecessors, (2360), 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) [2023-08-30 08:27:16,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 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) [2023-08-30 08:27:16,385 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 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) [2023-08-30 08:27:16,385 INFO L175 Difference]: Start difference. First operand has 138 places, 136 transitions, 839 flow. Second operand 12 states and 2360 transitions. [2023-08-30 08:27:16,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 383 transitions, 2866 flow [2023-08-30 08:27:16,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 383 transitions, 2829 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 08:27:16,498 INFO L231 Difference]: Finished difference. Result has 148 places, 148 transitions, 1011 flow [2023-08-30 08:27:16,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1011, PETRI_PLACES=148, PETRI_TRANSITIONS=148} [2023-08-30 08:27:16,498 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2023-08-30 08:27:16,499 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 148 transitions, 1011 flow [2023-08-30 08:27:16,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 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) [2023-08-30 08:27:16,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:16,499 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:16,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 08:27:16,499 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:16,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1009499629, now seen corresponding path program 1 times [2023-08-30 08:27:16,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:16,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80826124] [2023-08-30 08:27:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:16,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:16,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80826124] [2023-08-30 08:27:16,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80826124] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:27:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285740336] [2023-08-30 08:27:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:16,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:27:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:27:16,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:27:16,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 08:27:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:16,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:27:16,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:27:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:16,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:27:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:16,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285740336] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:27:16,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:27:16,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:27:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699689696] [2023-08-30 08:27:16,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:27:16,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:27:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:27:16,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:27:17,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:27:17,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 148 transitions, 1011 flow. Second operand has 14 states, 14 states have (on average 171.71428571428572) internal successors, (2404), 14 states have internal predecessors, (2404), 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) [2023-08-30 08:27:17,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:17,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:27:17,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:27,528 INFO L130 PetriNetUnfolder]: 44583/73155 cut-off events. [2023-08-30 08:27:27,528 INFO L131 PetriNetUnfolder]: For 124577/124587 co-relation queries the response was YES. [2023-08-30 08:27:28,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222445 conditions, 73155 events. 44583/73155 cut-off events. For 124577/124587 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 584295 event pairs, 3299 based on Foata normal form. 1354/69542 useless extension candidates. Maximal degree in co-relation 222401. Up to 17742 conditions per place. [2023-08-30 08:27:28,335 INFO L137 encePairwiseOnDemand]: 391/410 looper letters, 937 selfloop transitions, 123 changer transitions 14/1096 dead transitions. [2023-08-30 08:27:28,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1096 transitions, 8383 flow [2023-08-30 08:27:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:27:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:27:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6130 transitions. [2023-08-30 08:27:28,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46722560975609756 [2023-08-30 08:27:28,341 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6130 transitions. [2023-08-30 08:27:28,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6130 transitions. [2023-08-30 08:27:28,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:28,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6130 transitions. [2023-08-30 08:27:28,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 191.5625) internal successors, (6130), 32 states have internal predecessors, (6130), 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) [2023-08-30 08:27:28,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 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) [2023-08-30 08:27:28,360 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 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) [2023-08-30 08:27:28,360 INFO L175 Difference]: Start difference. First operand has 148 places, 148 transitions, 1011 flow. Second operand 32 states and 6130 transitions. [2023-08-30 08:27:28,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1096 transitions, 8383 flow [2023-08-30 08:27:28,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1096 transitions, 8370 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 08:27:28,878 INFO L231 Difference]: Finished difference. Result has 186 places, 234 transitions, 2134 flow [2023-08-30 08:27:28,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2134, PETRI_PLACES=186, PETRI_TRANSITIONS=234} [2023-08-30 08:27:28,879 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2023-08-30 08:27:28,879 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 234 transitions, 2134 flow [2023-08-30 08:27:28,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 171.71428571428572) internal successors, (2404), 14 states have internal predecessors, (2404), 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) [2023-08-30 08:27:28,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:28,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:28,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 08:27:29,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 08:27:29,085 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:29,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:29,086 INFO L85 PathProgramCache]: Analyzing trace with hash -694326327, now seen corresponding path program 1 times [2023-08-30 08:27:29,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:29,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858327024] [2023-08-30 08:27:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:29,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858327024] [2023-08-30 08:27:29,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858327024] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:27:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405653482] [2023-08-30 08:27:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:29,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:27:29,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:27:29,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:27:29,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 08:27:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:29,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:27:29,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:27:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:29,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:27:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:29,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405653482] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:27:29,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:27:29,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:27:29,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661722111] [2023-08-30 08:27:29,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:27:29,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:27:29,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:29,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:27:29,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:27:29,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:27:29,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 234 transitions, 2134 flow. Second operand has 14 states, 14 states have (on average 171.57142857142858) internal successors, (2402), 14 states have internal predecessors, (2402), 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) [2023-08-30 08:27:29,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:29,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:27:29,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:43,302 INFO L130 PetriNetUnfolder]: 48430/79310 cut-off events. [2023-08-30 08:27:43,302 INFO L131 PetriNetUnfolder]: For 201083/201093 co-relation queries the response was YES. [2023-08-30 08:27:43,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261195 conditions, 79310 events. 48430/79310 cut-off events. For 201083/201093 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 642135 event pairs, 3532 based on Foata normal form. 750/74612 useless extension candidates. Maximal degree in co-relation 261137. Up to 20713 conditions per place. [2023-08-30 08:27:44,197 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 977 selfloop transitions, 170 changer transitions 19/1190 dead transitions. [2023-08-30 08:27:44,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1190 transitions, 10776 flow [2023-08-30 08:27:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:27:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:27:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6080 transitions. [2023-08-30 08:27:44,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2023-08-30 08:27:44,207 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6080 transitions. [2023-08-30 08:27:44,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6080 transitions. [2023-08-30 08:27:44,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:44,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6080 transitions. [2023-08-30 08:27:44,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 190.0) internal successors, (6080), 32 states have internal predecessors, (6080), 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) [2023-08-30 08:27:44,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 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) [2023-08-30 08:27:44,224 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 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) [2023-08-30 08:27:44,224 INFO L175 Difference]: Start difference. First operand has 186 places, 234 transitions, 2134 flow. Second operand 32 states and 6080 transitions. [2023-08-30 08:27:44,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1190 transitions, 10776 flow [2023-08-30 08:27:46,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 1190 transitions, 10583 flow, removed 62 selfloop flow, removed 9 redundant places. [2023-08-30 08:27:46,159 INFO L231 Difference]: Finished difference. Result has 213 places, 319 transitions, 3373 flow [2023-08-30 08:27:46,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3373, PETRI_PLACES=213, PETRI_TRANSITIONS=319} [2023-08-30 08:27:46,172 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 122 predicate places. [2023-08-30 08:27:46,173 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 319 transitions, 3373 flow [2023-08-30 08:27:46,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 171.57142857142858) internal successors, (2402), 14 states have internal predecessors, (2402), 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) [2023-08-30 08:27:46,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:46,178 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:46,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 08:27:46,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 08:27:46,381 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:46,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash 54498219, now seen corresponding path program 1 times [2023-08-30 08:27:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033715035] [2023-08-30 08:27:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:46,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:46,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:46,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033715035] [2023-08-30 08:27:46,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033715035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:27:46,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881743007] [2023-08-30 08:27:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:46,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:27:46,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:27:46,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:27:46,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 08:27:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:46,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:27:46,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:27:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:46,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:27:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:47,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881743007] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:27:47,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:27:47,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:27:47,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634285889] [2023-08-30 08:27:47,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:27:47,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:27:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:47,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:27:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:27:47,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 410 [2023-08-30 08:27:47,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 319 transitions, 3373 flow. Second operand has 14 states, 14 states have (on average 193.57142857142858) internal successors, (2710), 14 states have internal predecessors, (2710), 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) [2023-08-30 08:27:47,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:47,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 410 [2023-08-30 08:27:47,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:15,292 INFO L130 PetriNetUnfolder]: 85206/143294 cut-off events. [2023-08-30 08:28:15,293 INFO L131 PetriNetUnfolder]: For 501563/502381 co-relation queries the response was YES. [2023-08-30 08:28:16,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492634 conditions, 143294 events. 85206/143294 cut-off events. For 501563/502381 co-relation queries the response was YES. Maximal size of possible extension queue 1881. Compared 1227455 event pairs, 9162 based on Foata normal form. 2684/136298 useless extension candidates. Maximal degree in co-relation 492571. Up to 36470 conditions per place. [2023-08-30 08:28:17,062 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 0 selfloop transitions, 0 changer transitions 1079/1079 dead transitions. [2023-08-30 08:28:17,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1079 transitions, 12474 flow [2023-08-30 08:28:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 08:28:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 08:28:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2397 transitions. [2023-08-30 08:28:17,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314855875831486 [2023-08-30 08:28:17,079 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2397 transitions. [2023-08-30 08:28:17,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2397 transitions. [2023-08-30 08:28:17,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:17,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2397 transitions. [2023-08-30 08:28:17,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 217.9090909090909) internal successors, (2397), 11 states have internal predecessors, (2397), 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) [2023-08-30 08:28:17,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 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) [2023-08-30 08:28:17,084 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 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) [2023-08-30 08:28:17,085 INFO L175 Difference]: Start difference. First operand has 213 places, 319 transitions, 3373 flow. Second operand 11 states and 2397 transitions. [2023-08-30 08:28:17,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1079 transitions, 12474 flow [2023-08-30 08:28:22,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 1079 transitions, 11847 flow, removed 76 selfloop flow, removed 13 redundant places. [2023-08-30 08:28:22,656 INFO L231 Difference]: Finished difference. Result has 207 places, 0 transitions, 0 flow [2023-08-30 08:28:22,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=207, PETRI_TRANSITIONS=0} [2023-08-30 08:28:22,657 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2023-08-30 08:28:22,657 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 0 transitions, 0 flow [2023-08-30 08:28:22,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.57142857142858) internal successors, (2710), 14 states have internal predecessors, (2710), 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) [2023-08-30 08:28:22,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 30 remaining) [2023-08-30 08:28:22,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-08-30 08:28:22,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-08-30 08:28:22,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-08-30 08:28:22,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2023-08-30 08:28:22,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2023-08-30 08:28:22,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-08-30 08:28:22,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-08-30 08:28:22,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2023-08-30 08:28:22,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-08-30 08:28:22,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-08-30 08:28:22,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-08-30 08:28:22,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-08-30 08:28:22,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-08-30 08:28:22,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2023-08-30 08:28:22,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-08-30 08:28:22,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-08-30 08:28:22,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2023-08-30 08:28:22,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2023-08-30 08:28:22,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2023-08-30 08:28:22,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-08-30 08:28:22,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-08-30 08:28:22,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-08-30 08:28:22,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-08-30 08:28:22,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2023-08-30 08:28:22,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-08-30 08:28:22,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-08-30 08:28:22,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-08-30 08:28:22,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-08-30 08:28:22,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2023-08-30 08:28:22,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 08:28:22,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:28:22,872 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:22,872 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 08:28:22,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:22,897 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:28:22,898 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:28:22,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:28:22,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:22,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:22,901 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:28:22,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:22,901 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:22,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:22,917 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:28:22,917 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:28:22,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:28:22,926 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:28:27,069 INFO L134 LiptonReduction]: Checked pairs total: 72968 [2023-08-30 08:28:27,069 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-30 08:28:27,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:28:27,070 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7cffb5e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:28:27,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:28:27,073 INFO L130 PetriNetUnfolder]: 3/31 cut-off events. [2023-08-30 08:28:27,073 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:28:27,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:27,073 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 08:28:27,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:28:27,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:27,074 INFO L85 PathProgramCache]: Analyzing trace with hash -574457129, now seen corresponding path program 1 times [2023-08-30 08:28:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:27,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381611187] [2023-08-30 08:28:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:27,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:28:27,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:28:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:28:27,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:28:27,124 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:28:27,124 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:28:27,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 08:28:27,124 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:28:27,124 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:28:27,125 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:28:27,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 08:28:27,161 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:28:27,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:28:27,202 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:28:27,202 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:28:27,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-08-30 08:28:27,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:28:27,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 329 transitions, 679 flow [2023-08-30 08:28:27,210 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:28:27,210 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:28:27,210 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:28:27,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:28:27,249 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:28:27,249 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:28:27,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-08-30 08:28:27,267 INFO L119 LiptonReduction]: Number of co-enabled transitions 64602 [2023-08-30 08:28:31,204 INFO L134 LiptonReduction]: Checked pairs total: 173976 [2023-08-30 08:28:31,205 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-08-30 08:28:31,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:28:31,229 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7cffb5e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:28:31,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-30 08:28:31,233 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:28:31,233 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 08:28:31,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:31,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:31,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:28:31,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:31,233 INFO L85 PathProgramCache]: Analyzing trace with hash 738447711, now seen corresponding path program 1 times [2023-08-30 08:28:31,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:31,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209021771] [2023-08-30 08:28:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:31,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:31,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:31,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209021771] [2023-08-30 08:28:31,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209021771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:31,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:31,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:28:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611976285] [2023-08-30 08:28:31,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:28:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:28:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:28:31,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 578 [2023-08-30 08:28:31,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 144 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 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) [2023-08-30 08:28:31,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:31,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 578 [2023-08-30 08:28:31,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:39,644 INFO L130 PetriNetUnfolder]: 75621/123101 cut-off events. [2023-08-30 08:28:39,645 INFO L131 PetriNetUnfolder]: For 3415/3415 co-relation queries the response was YES. [2023-08-30 08:28:39,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225968 conditions, 123101 events. 75621/123101 cut-off events. For 3415/3415 co-relation queries the response was YES. Maximal size of possible extension queue 3231. Compared 1149690 event pairs, 5649 based on Foata normal form. 0/85858 useless extension candidates. Maximal degree in co-relation 126578. Up to 72729 conditions per place. [2023-08-30 08:28:40,373 INFO L137 encePairwiseOnDemand]: 562/578 looper letters, 228 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2023-08-30 08:28:40,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 293 transitions, 1112 flow [2023-08-30 08:28:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:28:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:28:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1667 transitions. [2023-08-30 08:28:40,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768166089965397 [2023-08-30 08:28:40,375 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1667 transitions. [2023-08-30 08:28:40,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1667 transitions. [2023-08-30 08:28:40,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:40,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1667 transitions. [2023-08-30 08:28:40,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 333.4) internal successors, (1667), 5 states have internal predecessors, (1667), 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) [2023-08-30 08:28:40,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 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) [2023-08-30 08:28:40,379 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 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) [2023-08-30 08:28:40,380 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 309 flow. Second operand 5 states and 1667 transitions. [2023-08-30 08:28:40,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 293 transitions, 1112 flow [2023-08-30 08:28:40,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 293 transitions, 1100 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 08:28:40,383 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 359 flow [2023-08-30 08:28:40,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=135, PETRI_TRANSITIONS=143} [2023-08-30 08:28:40,388 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 5 predicate places. [2023-08-30 08:28:40,388 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 359 flow [2023-08-30 08:28:40,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 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) [2023-08-30 08:28:40,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:40,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:40,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 08:28:40,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:28:40,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1549207263, now seen corresponding path program 1 times [2023-08-30 08:28:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146329850] [2023-08-30 08:28:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:40,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:40,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:40,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146329850] [2023-08-30 08:28:40,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146329850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:40,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:40,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:28:40,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367599022] [2023-08-30 08:28:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:40,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:40,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:40,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:40,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 578 [2023-08-30 08:28:40,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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) [2023-08-30 08:28:40,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:40,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 578 [2023-08-30 08:28:40,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:57,260 INFO L130 PetriNetUnfolder]: 168734/238074 cut-off events. [2023-08-30 08:28:57,260 INFO L131 PetriNetUnfolder]: For 30640/34486 co-relation queries the response was YES. [2023-08-30 08:28:57,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490787 conditions, 238074 events. 168734/238074 cut-off events. For 30640/34486 co-relation queries the response was YES. Maximal size of possible extension queue 10899. Compared 1967601 event pairs, 57704 based on Foata normal form. 7655/198537 useless extension candidates. Maximal degree in co-relation 363510. Up to 220588 conditions per place. [2023-08-30 08:28:59,003 INFO L137 encePairwiseOnDemand]: 553/578 looper letters, 129 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-08-30 08:28:59,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 175 transitions, 717 flow [2023-08-30 08:28:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:59,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-08-30 08:28:59,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467128027681661 [2023-08-30 08:28:59,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-08-30 08:28:59,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-08-30 08:28:59,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:59,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-08-30 08:28:59,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 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) [2023-08-30 08:28:59,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 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) [2023-08-30 08:28:59,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 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) [2023-08-30 08:28:59,007 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 359 flow. Second operand 3 states and 948 transitions. [2023-08-30 08:28:59,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 175 transitions, 717 flow [2023-08-30 08:28:59,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 175 transitions, 717 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:28:59,028 INFO L231 Difference]: Finished difference. Result has 138 places, 146 transitions, 425 flow [2023-08-30 08:28:59,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=138, PETRI_TRANSITIONS=146} [2023-08-30 08:28:59,029 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 8 predicate places. [2023-08-30 08:28:59,029 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 146 transitions, 425 flow [2023-08-30 08:28:59,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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) [2023-08-30 08:28:59,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:59,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:59,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 08:28:59,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:28:59,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash 928305410, now seen corresponding path program 1 times [2023-08-30 08:28:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481526634] [2023-08-30 08:28:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:59,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:59,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:59,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481526634] [2023-08-30 08:28:59,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481526634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:59,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:59,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:28:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577650057] [2023-08-30 08:28:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:59,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:28:59,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:28:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:28:59,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 578 [2023-08-30 08:28:59,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 146 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 261.6) internal successors, (1308), 5 states have internal predecessors, (1308), 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) [2023-08-30 08:28:59,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:59,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 578 [2023-08-30 08:28:59,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:26,032 INFO L130 PetriNetUnfolder]: 245412/346044 cut-off events. [2023-08-30 08:29:26,032 INFO L131 PetriNetUnfolder]: For 79160/104150 co-relation queries the response was YES. [2023-08-30 08:29:27,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772224 conditions, 346044 events. 245412/346044 cut-off events. For 79160/104150 co-relation queries the response was YES. Maximal size of possible extension queue 14037. Compared 2979735 event pairs, 91900 based on Foata normal form. 3391/279911 useless extension candidates. Maximal degree in co-relation 622234. Up to 228538 conditions per place. [2023-08-30 08:29:28,654 INFO L137 encePairwiseOnDemand]: 567/578 looper letters, 292 selfloop transitions, 10 changer transitions 0/343 dead transitions. [2023-08-30 08:29:28,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 343 transitions, 1557 flow [2023-08-30 08:29:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:29:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:29:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1855 transitions. [2023-08-30 08:29:28,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348904267589388 [2023-08-30 08:29:28,656 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1855 transitions. [2023-08-30 08:29:28,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1855 transitions. [2023-08-30 08:29:28,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:28,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1855 transitions. [2023-08-30 08:29:28,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 309.1666666666667) internal successors, (1855), 6 states have internal predecessors, (1855), 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) [2023-08-30 08:29:28,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 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) [2023-08-30 08:29:28,660 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 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) [2023-08-30 08:29:28,661 INFO L175 Difference]: Start difference. First operand has 138 places, 146 transitions, 425 flow. Second operand 6 states and 1855 transitions. [2023-08-30 08:29:28,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 343 transitions, 1557 flow [2023-08-30 08:29:28,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 343 transitions, 1551 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:29:28,730 INFO L231 Difference]: Finished difference. Result has 145 places, 152 transitions, 483 flow [2023-08-30 08:29:28,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=483, PETRI_PLACES=145, PETRI_TRANSITIONS=152} [2023-08-30 08:29:28,730 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 15 predicate places. [2023-08-30 08:29:28,730 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 152 transitions, 483 flow [2023-08-30 08:29:28,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 261.6) internal successors, (1308), 5 states have internal predecessors, (1308), 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) [2023-08-30 08:29:28,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:28,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:28,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 08:29:28,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:29:28,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1287301109, now seen corresponding path program 1 times [2023-08-30 08:29:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:28,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863517445] [2023-08-30 08:29:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:28,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:29:28,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:28,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863517445] [2023-08-30 08:29:28,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863517445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:28,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682297910] [2023-08-30 08:29:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:28,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:29:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:28,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:29:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:29:28,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 578 [2023-08-30 08:29:28,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 152 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 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) [2023-08-30 08:29:28,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:28,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 578 [2023-08-30 08:29:28,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand