./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-2.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_longest-2.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 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc --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 08:29:44,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:29:44,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:29:44,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:29:44,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:29:44,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:29:44,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:29:44,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:29:44,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:29:44,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:29:44,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:29:44,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:29:44,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:29:44,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:29:44,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:29:44,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:29:44,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:29:44,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:29:44,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:29:44,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:29:44,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:29:44,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:29:44,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:29:44,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:29:44,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:29:44,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:29:44,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:29:44,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:29:44,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:29:44,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:29:44,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:29:44,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:29:44,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:29:44,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:29:44,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:29:44,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:29:44,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:29:44,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:29:44,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:29:44,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:29:44,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:29:44,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:29:44,366 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:29:44,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:29:44,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:29:44,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:29:44,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:29:44,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:29:44,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:29:44,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:29:44,369 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:29:44,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:29:44,370 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:29:44,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:29:44,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:29:44,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:29:44,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:29:44,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:29:44,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:29:44,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:29:44,371 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:29:44,371 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:29:44,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:29:44,371 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:29:44,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:29:44,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:29:44,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:29:44,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:29:44,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:29:44,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:29:44,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:29:44,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:29:44,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:29:44,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:29:44,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:29:44,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:29:44,373 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:29:44,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:29:44,373 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:29:44,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:29:44,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:29:44,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:29:44,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:29:44,666 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:29:44,670 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:29:44,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-2.i [2023-08-30 08:29:45,689 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:29:45,916 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:29:45,917 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-2.i [2023-08-30 08:29:45,925 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6878c62/b8271143eac74d93a88ff155591d36df/FLAGff9057aab [2023-08-30 08:29:45,937 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6878c62/b8271143eac74d93a88ff155591d36df [2023-08-30 08:29:45,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:29:45,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:29:45,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:29:45,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:29:45,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:29:45,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:29:45" (1/1) ... [2023-08-30 08:29:45,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2339c40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:45, skipping insertion in model container [2023-08-30 08:29:45,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:29:45" (1/1) ... [2023-08-30 08:29:45,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:29:45,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:29:46,273 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_longest-2.i[31164,31177] [2023-08-30 08:29:46,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:29:46,292 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:29:46,333 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_longest-2.i[31164,31177] [2023-08-30 08:29:46,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:29:46,373 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:29:46,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46 WrapperNode [2023-08-30 08:29:46,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:29:46,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:29:46,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:29:46,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:29:46,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,433 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 198 [2023-08-30 08:29:46,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:29:46,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:29:46,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:29:46,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:29:46,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,471 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:29:46,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:29:46,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:29:46,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:29:46,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (1/1) ... [2023-08-30 08:29:46,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:29:46,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:46,513 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 08:29:46,528 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 08:29:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:29:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 08:29:46,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 08:29:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:29:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:29:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:29:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:29:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:29:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:29:46,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:29:46,548 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 08:29:46,657 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:29:46,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:29:46,854 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:29:46,942 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:29:46,943 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 08:29:46,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:29:46 BoogieIcfgContainer [2023-08-30 08:29:46,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:29:46,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:29:46,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:29:46,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:29:46,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:29:45" (1/3) ... [2023-08-30 08:29:46,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3905204a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:29:46, skipping insertion in model container [2023-08-30 08:29:46,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:46" (2/3) ... [2023-08-30 08:29:46,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3905204a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:29:46, skipping insertion in model container [2023-08-30 08:29:46,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:29:46" (3/3) ... [2023-08-30 08:29:46,951 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-2.i [2023-08-30 08:29:46,975 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:29:46,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:29:46,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 08:29:46,983 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:29:47,029 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:29:47,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:47,088 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:29:47,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:47,094 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 08:29:47,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:47,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:47,099 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:29:47,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:47,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:47,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:47,128 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:29:47,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:47,129 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 08:29:47,130 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:29:50,579 INFO L134 LiptonReduction]: Checked pairs total: 3076 [2023-08-30 08:29:50,580 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:29:50,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:29:50,631 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;@54735660, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:29:50,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 08:29:50,638 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-08-30 08:29:50,639 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:50,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:50,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:50,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:50,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash 288098820, now seen corresponding path program 1 times [2023-08-30 08:29:50,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:50,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879072415] [2023-08-30 08:29:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:50,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:50,828 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 08:29:50,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:50,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879072415] [2023-08-30 08:29:50,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879072415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:50,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:50,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:50,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275503472] [2023-08-30 08:29:50,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:50,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:50,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:50,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:50,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2023-08-30 08:29:50,867 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 08:29:50,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:50,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2023-08-30 08:29:50,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:50,943 INFO L130 PetriNetUnfolder]: 52/119 cut-off events. [2023-08-30 08:29:50,943 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:50,945 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 08:29:50,947 INFO L137 encePairwiseOnDemand]: 258/269 looper letters, 27 selfloop transitions, 2 changer transitions 1/31 dead transitions. [2023-08-30 08:29:50,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 127 flow [2023-08-30 08:29:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-30 08:29:50,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48451053283767037 [2023-08-30 08:29:50,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-30 08:29:50,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-30 08:29:50,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:50,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-30 08:29:50,972 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 08:29:50,976 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 08:29:50,976 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 08:29:50,977 INFO L175 Difference]: Start difference. First operand has 34 places, 38 transitions, 81 flow. Second operand 3 states and 391 transitions. [2023-08-30 08:29:50,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 127 flow [2023-08-30 08:29:50,979 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 08:29:50,981 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 65 flow [2023-08-30 08:29:50,982 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 08:29:50,986 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:29:50,986 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 65 flow [2023-08-30 08:29:50,986 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 08:29:50,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:50,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:50,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:29:50,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:50,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1508206433, now seen corresponding path program 1 times [2023-08-30 08:29:50,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073042153] [2023-08-30 08:29:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:50,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:51,073 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 08:29:51,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:51,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073042153] [2023-08-30 08:29:51,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073042153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:51,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:51,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:29:51,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852223887] [2023-08-30 08:29:51,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:51,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:51,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:51,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:51,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:51,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:29:51,089 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 08:29:51,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:51,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:29:51,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:51,141 INFO L130 PetriNetUnfolder]: 58/134 cut-off events. [2023-08-30 08:29:51,141 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:29:51,141 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 08:29:51,142 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 30 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-30 08:29:51,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 143 flow [2023-08-30 08:29:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-30 08:29:51,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547707558859975 [2023-08-30 08:29:51,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-30 08:29:51,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-30 08:29:51,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:51,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-30 08:29:51,144 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 08:29:51,145 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 08:29:51,146 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 08:29:51,146 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 65 flow. Second operand 3 states and 367 transitions. [2023-08-30 08:29:51,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 143 flow [2023-08-30 08:29:51,146 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 08:29:51,147 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 79 flow [2023-08-30 08:29:51,147 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 08:29:51,147 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:29:51,148 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 79 flow [2023-08-30 08:29:51,148 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 08:29:51,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:51,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:51,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:29:51,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:51,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372441, now seen corresponding path program 1 times [2023-08-30 08:29:51,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:51,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734917668] [2023-08-30 08:29:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:51,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:51,259 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 08:29:51,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:51,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734917668] [2023-08-30 08:29:51,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734917668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:51,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:51,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:51,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341340684] [2023-08-30 08:29:51,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:51,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:29:51,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:51,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:29:51,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:29:51,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:29:51,357 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 08:29:51,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:51,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:29:51,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:51,499 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:29:51,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:51,499 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 08:29:51,500 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 44 selfloop transitions, 7 changer transitions 1/53 dead transitions. [2023-08-30 08:29:51,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 231 flow [2023-08-30 08:29:51,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:29:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:29:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 726 transitions. [2023-08-30 08:29:51,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385554965480616 [2023-08-30 08:29:51,502 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 726 transitions. [2023-08-30 08:29:51,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 726 transitions. [2023-08-30 08:29:51,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:51,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 726 transitions. [2023-08-30 08:29:51,504 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 08:29:51,506 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 08:29:51,507 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 08:29:51,507 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 79 flow. Second operand 7 states and 726 transitions. [2023-08-30 08:29:51,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 231 flow [2023-08-30 08:29:51,507 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 08:29:51,508 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 126 flow [2023-08-30 08:29:51,508 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 08:29:51,509 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-30 08:29:51,509 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 126 flow [2023-08-30 08:29:51,509 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 08:29:51,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:51,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:51,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:29:51,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:51,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372440, now seen corresponding path program 1 times [2023-08-30 08:29:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:51,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10543793] [2023-08-30 08:29:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:51,602 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 08:29:51,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:51,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10543793] [2023-08-30 08:29:51,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10543793] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:51,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:51,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:51,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759810699] [2023-08-30 08:29:51,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:51,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:29:51,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:51,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:29:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:29:51,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:29:51,690 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 08:29:51,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:51,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:29:51,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:51,793 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:29:51,794 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 08:29:51,797 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 08:29:51,798 INFO L137 encePairwiseOnDemand]: 261/269 looper letters, 42 selfloop transitions, 9 changer transitions 1/53 dead transitions. [2023-08-30 08:29:51,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 272 flow [2023-08-30 08:29:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:29:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:29:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 725 transitions. [2023-08-30 08:29:51,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38502389803505044 [2023-08-30 08:29:51,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 725 transitions. [2023-08-30 08:29:51,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 725 transitions. [2023-08-30 08:29:51,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:51,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 725 transitions. [2023-08-30 08:29:51,806 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 08:29:51,808 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 08:29:51,809 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 08:29:51,809 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 126 flow. Second operand 7 states and 725 transitions. [2023-08-30 08:29:51,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 272 flow [2023-08-30 08:29:51,811 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 08:29:51,812 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 145 flow [2023-08-30 08:29:51,812 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 08:29:51,813 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-30 08:29:51,813 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 145 flow [2023-08-30 08:29:51,814 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 08:29:51,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:51,814 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 08:29:51,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:29:51,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:51,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:51,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265492, now seen corresponding path program 1 times [2023-08-30 08:29:51,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:51,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482648109] [2023-08-30 08:29:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:51,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:51,908 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 08:29:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482648109] [2023-08-30 08:29:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482648109] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573365527] [2023-08-30 08:29:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:51,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:51,928 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 08:29:51,929 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 08:29:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:52,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:29:52,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:52,092 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 08:29:52,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:29:52,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573365527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:52,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:29:52,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 08:29:52,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606997196] [2023-08-30 08:29:52,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:29:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:52,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:29:52,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:29:52,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:29:52,128 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 08:29:52,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:52,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:29:52,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:52,169 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:29:52,170 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 08:29:52,170 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 08:29:52,170 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 33 selfloop transitions, 2 changer transitions 1/37 dead transitions. [2023-08-30 08:29:52,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 219 flow [2023-08-30 08:29:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:29:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:29:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 473 transitions. [2023-08-30 08:29:52,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395910780669145 [2023-08-30 08:29:52,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 473 transitions. [2023-08-30 08:29:52,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 473 transitions. [2023-08-30 08:29:52,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:52,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 473 transitions. [2023-08-30 08:29:52,173 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 08:29:52,174 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 08:29:52,174 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 08:29:52,174 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 145 flow. Second operand 4 states and 473 transitions. [2023-08-30 08:29:52,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 219 flow [2023-08-30 08:29:52,175 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 08:29:52,176 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 123 flow [2023-08-30 08:29:52,176 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 08:29:52,176 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-30 08:29:52,176 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 123 flow [2023-08-30 08:29:52,177 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 08:29:52,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:52,177 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 08:29:52,183 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 08:29:52,377 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 08:29:52,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:52,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265468, now seen corresponding path program 1 times [2023-08-30 08:29:52,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:52,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101053332] [2023-08-30 08:29:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:52,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:52,435 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 08:29:52,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:52,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101053332] [2023-08-30 08:29:52,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101053332] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:52,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969852193] [2023-08-30 08:29:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:52,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:52,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:52,455 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 08:29:52,456 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 08:29:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:52,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:29:52,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:52,592 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 08:29:52,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:52,625 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 08:29:52,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969852193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:52,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:52,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 08:29:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403502149] [2023-08-30 08:29:52,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:52,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:29:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:29:52,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:29:52,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 269 [2023-08-30 08:29:52,661 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 08:29:52,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:52,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 269 [2023-08-30 08:29:52,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:52,721 INFO L130 PetriNetUnfolder]: 79/182 cut-off events. [2023-08-30 08:29:52,721 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 08:29:52,721 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 08:29:52,722 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 40 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2023-08-30 08:29:52,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 241 flow [2023-08-30 08:29:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:29:52,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:29:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-08-30 08:29:52,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43271375464684014 [2023-08-30 08:29:52,724 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-08-30 08:29:52,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-08-30 08:29:52,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:52,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-08-30 08:29:52,725 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 08:29:52,727 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 08:29:52,727 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 08:29:52,727 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 123 flow. Second operand 5 states and 582 transitions. [2023-08-30 08:29:52,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 241 flow [2023-08-30 08:29:52,728 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 08:29:52,729 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 132 flow [2023-08-30 08:29:52,729 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 08:29:52,729 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-30 08:29:52,730 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 132 flow [2023-08-30 08:29:52,730 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 08:29:52,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:52,730 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 08:29:52,737 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 08:29:52,935 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 08:29:52,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:52,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916078, now seen corresponding path program 1 times [2023-08-30 08:29:52,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:52,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032947230] [2023-08-30 08:29:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:52,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:52,980 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 08:29:52,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:52,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032947230] [2023-08-30 08:29:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032947230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:52,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:52,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:52,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724735863] [2023-08-30 08:29:52,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:52,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:52,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:52,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:52,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:52,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:29:52,997 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 08:29:52,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:52,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:29:52,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:53,036 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:29:53,037 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 08:29:53,037 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 08:29:53,038 INFO L137 encePairwiseOnDemand]: 267/269 looper letters, 32 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 08:29:53,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 198 flow [2023-08-30 08:29:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:53,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-30 08:29:53,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423791821561338 [2023-08-30 08:29:53,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-30 08:29:53,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-30 08:29:53,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:53,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-30 08:29:53,040 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 08:29:53,041 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 08:29:53,041 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 08:29:53,042 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 132 flow. Second operand 3 states and 357 transitions. [2023-08-30 08:29:53,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 198 flow [2023-08-30 08:29:53,042 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 08:29:53,043 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 125 flow [2023-08-30 08:29:53,043 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 08:29:53,044 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-30 08:29:53,044 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 125 flow [2023-08-30 08:29:53,044 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 08:29:53,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:53,044 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 08:29:53,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:29:53,045 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:53,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916077, now seen corresponding path program 1 times [2023-08-30 08:29:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:53,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146928770] [2023-08-30 08:29:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:53,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:53,159 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 08:29:53,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:53,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146928770] [2023-08-30 08:29:53,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146928770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:53,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202456418] [2023-08-30 08:29:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:53,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:53,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:53,179 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 08:29:53,179 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 08:29:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:53,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:29:53,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:53,319 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 08:29:53,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:53,376 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 08:29:53,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202456418] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:53,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:53,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 08:29:53,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187226936] [2023-08-30 08:29:53,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:53,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:29:53,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:53,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:29:53,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:29:53,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 269 [2023-08-30 08:29:53,504 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 08:29:53,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:53,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 269 [2023-08-30 08:29:53,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:53,671 INFO L130 PetriNetUnfolder]: 103/233 cut-off events. [2023-08-30 08:29:53,671 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 08:29:53,671 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 08:29:53,672 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2023-08-30 08:29:53,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 357 flow [2023-08-30 08:29:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:29:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:29:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1163 transitions. [2023-08-30 08:29:53,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36028500619578685 [2023-08-30 08:29:53,682 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1163 transitions. [2023-08-30 08:29:53,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1163 transitions. [2023-08-30 08:29:53,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:53,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1163 transitions. [2023-08-30 08:29:53,684 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 08:29:53,687 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 08:29:53,688 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 08:29:53,688 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 125 flow. Second operand 12 states and 1163 transitions. [2023-08-30 08:29:53,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 357 flow [2023-08-30 08:29:53,689 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 08:29:53,689 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-30 08:29:53,689 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 08:29:53,690 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-30 08:29:53,690 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-30 08:29:53,691 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 08:29:53,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 08:29:53,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 08:29:53,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 08:29:53,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 08:29:53,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 08:29:53,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 08:29:53,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 08:29:53,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 08:29:53,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 08:29:53,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 08:29:53,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 08:29:53,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 08:29:53,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 08:29:53,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 08:29:53,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 08:29:53,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 08:29:53,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 08:29:53,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 08:29:53,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 08:29:53,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 08:29:53,706 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 08:29:53,900 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 08:29:53,901 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:53,902 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 08:29:53,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:53,913 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:29:53,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:53,913 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 08:29:53,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:53,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:53,914 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:29:53,914 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:53,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:53,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:53,921 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:29:53,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:53,921 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 08:29:53,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:29:57,823 INFO L134 LiptonReduction]: Checked pairs total: 2879 [2023-08-30 08:29:57,823 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:29:57,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:29:57,825 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;@54735660, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:29:57,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:29:57,827 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 08:29:57,827 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:57,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:57,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 08:29:57,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:29:57,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1827183085, now seen corresponding path program 1 times [2023-08-30 08:29:57,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:57,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808310444] [2023-08-30 08:29:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:57,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:29:57,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:29:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:29:57,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:29:57,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:29:57,898 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:29:57,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:29:57,899 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:29:57,899 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:29:57,900 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:29:57,900 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 08:29:57,958 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:29:57,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:57,998 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:29:57,999 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:29:58,000 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 08:29:58,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:58,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:58,002 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:29:58,002 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:58,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:58,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:58,033 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:29:58,033 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:29:58,034 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 08:29:58,042 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:30:01,964 INFO L134 LiptonReduction]: Checked pairs total: 72746 [2023-08-30 08:30:01,964 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-30 08:30:01,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:30:01,965 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;@54735660, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:30:01,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-30 08:30:01,968 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:30:01,968 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:30:01,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:01,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:01,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:01,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:01,969 INFO L85 PathProgramCache]: Analyzing trace with hash -104723753, now seen corresponding path program 1 times [2023-08-30 08:30:01,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875350760] [2023-08-30 08:30:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:01,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:02,021 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 08:30:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875350760] [2023-08-30 08:30:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875350760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:02,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:02,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:30:02,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725952012] [2023-08-30 08:30:02,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:02,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:30:02,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:02,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:30:02,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:30:02,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:30:02,039 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 08:30:02,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:02,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:30:02,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:02,397 INFO L130 PetriNetUnfolder]: 1931/3617 cut-off events. [2023-08-30 08:30:02,397 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-30 08:30:02,400 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 08:30:02,414 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 105 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2023-08-30 08:30:02,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 550 flow [2023-08-30 08:30:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:30:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:30:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1111 transitions. [2023-08-30 08:30:02,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419512195121952 [2023-08-30 08:30:02,417 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1111 transitions. [2023-08-30 08:30:02,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1111 transitions. [2023-08-30 08:30:02,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:02,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1111 transitions. [2023-08-30 08:30:02,419 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 08:30:02,421 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 08:30:02,422 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 08:30:02,422 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 212 flow. Second operand 5 states and 1111 transitions. [2023-08-30 08:30:02,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 550 flow [2023-08-30 08:30:02,424 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 08:30:02,429 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 266 flow [2023-08-30 08:30:02,430 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 08:30:02,430 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-08-30 08:30:02,430 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 266 flow [2023-08-30 08:30:02,431 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 08:30:02,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:02,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:30:02,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:02,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:02,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1121630105, now seen corresponding path program 1 times [2023-08-30 08:30:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:02,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712013039] [2023-08-30 08:30:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:02,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:02,475 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 08:30:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712013039] [2023-08-30 08:30:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712013039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:02,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:02,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:30:02,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681679487] [2023-08-30 08:30:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:02,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:02,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:02,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:02,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 410 [2023-08-30 08:30:02,507 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 08:30:02,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:02,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 410 [2023-08-30 08:30:02,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:02,826 INFO L130 PetriNetUnfolder]: 2391/4277 cut-off events. [2023-08-30 08:30:02,826 INFO L131 PetriNetUnfolder]: For 925/935 co-relation queries the response was YES. [2023-08-30 08:30:02,831 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 08:30:02,847 INFO L137 encePairwiseOnDemand]: 403/410 looper letters, 62 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-30 08:30:02,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 94 transitions, 380 flow [2023-08-30 08:30:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:30:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:30:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-30 08:30:02,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170731707317073 [2023-08-30 08:30:02,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-30 08:30:02,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-30 08:30:02,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:02,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-30 08:30:02,851 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 08:30:02,852 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 08:30:02,853 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 08:30:02,853 INFO L175 Difference]: Start difference. First operand has 96 places, 100 transitions, 266 flow. Second operand 3 states and 636 transitions. [2023-08-30 08:30:02,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 94 transitions, 380 flow [2023-08-30 08:30:02,854 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 08:30:02,857 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 256 flow [2023-08-30 08:30:02,857 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 08:30:02,858 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-08-30 08:30:02,858 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 256 flow [2023-08-30 08:30:02,858 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 08:30:02,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:02,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:02,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:30:02,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:02,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash -410793662, now seen corresponding path program 1 times [2023-08-30 08:30:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:02,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935587757] [2023-08-30 08:30:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:02,927 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 08:30:02,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:02,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935587757] [2023-08-30 08:30:02,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935587757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:02,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:02,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:30:02,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168038462] [2023-08-30 08:30:02,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:02,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:02,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2023-08-30 08:30:02,961 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 08:30:02,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:02,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2023-08-30 08:30:02,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:03,308 INFO L130 PetriNetUnfolder]: 2769/5103 cut-off events. [2023-08-30 08:30:03,308 INFO L131 PetriNetUnfolder]: For 1140/1150 co-relation queries the response was YES. [2023-08-30 08:30:03,313 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 08:30:03,371 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 84 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 08:30:03,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 116 transitions, 507 flow [2023-08-30 08:30:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:30:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:30:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-30 08:30:03,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317073170731708 [2023-08-30 08:30:03,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-30 08:30:03,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-30 08:30:03,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:03,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-30 08:30:03,375 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 08:30:03,376 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 08:30:03,377 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 08:30:03,377 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 256 flow. Second operand 3 states and 654 transitions. [2023-08-30 08:30:03,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 116 transitions, 507 flow [2023-08-30 08:30:03,378 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 08:30:03,379 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 288 flow [2023-08-30 08:30:03,379 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 08:30:03,379 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:30:03,379 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 288 flow [2023-08-30 08:30:03,380 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 08:30:03,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:03,380 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 08:30:03,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 08:30:03,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:03,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478144, now seen corresponding path program 1 times [2023-08-30 08:30:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:03,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514744016] [2023-08-30 08:30:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:03,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:03,406 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 08:30:03,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:03,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514744016] [2023-08-30 08:30:03,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514744016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:03,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:03,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:30:03,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118300763] [2023-08-30 08:30:03,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:03,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:03,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:03,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:03,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:03,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:30:03,413 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 08:30:03,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:03,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:30:03,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:03,831 INFO L130 PetriNetUnfolder]: 2080/4294 cut-off events. [2023-08-30 08:30:03,831 INFO L131 PetriNetUnfolder]: For 910/920 co-relation queries the response was YES. [2023-08-30 08:30:03,838 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 08:30:03,851 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 75 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 08:30:03,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 511 flow [2023-08-30 08:30:03,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:30:03,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:30:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-30 08:30:03,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536585365853659 [2023-08-30 08:30:03,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-30 08:30:03,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-30 08:30:03,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:03,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-30 08:30:03,855 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 08:30:03,857 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 08:30:03,857 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 08:30:03,857 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 288 flow. Second operand 3 states and 681 transitions. [2023-08-30 08:30:03,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 511 flow [2023-08-30 08:30:03,859 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 08:30:03,860 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 293 flow [2023-08-30 08:30:03,860 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 08:30:03,862 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:30:03,862 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 293 flow [2023-08-30 08:30:03,862 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 08:30:03,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:03,862 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 08:30:03,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 08:30:03,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:03,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478172, now seen corresponding path program 1 times [2023-08-30 08:30:03,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:03,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605766381] [2023-08-30 08:30:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:03,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:03,898 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 08:30:03,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:03,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605766381] [2023-08-30 08:30:03,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605766381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:03,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:03,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:30:03,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624432147] [2023-08-30 08:30:03,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:03,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:03,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:03,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:03,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:03,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:30:03,907 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 08:30:03,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:03,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:30:03,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:04,241 INFO L130 PetriNetUnfolder]: 2005/4147 cut-off events. [2023-08-30 08:30:04,242 INFO L131 PetriNetUnfolder]: For 1019/1029 co-relation queries the response was YES. [2023-08-30 08:30:04,252 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 08:30:04,266 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 75 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-08-30 08:30:04,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 120 transitions, 512 flow [2023-08-30 08:30:04,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:30:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:30:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2023-08-30 08:30:04,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2023-08-30 08:30:04,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2023-08-30 08:30:04,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2023-08-30 08:30:04,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:04,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2023-08-30 08:30:04,273 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 08:30:04,275 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 08:30:04,275 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 08:30:04,275 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 293 flow. Second operand 3 states and 680 transitions. [2023-08-30 08:30:04,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 120 transitions, 512 flow [2023-08-30 08:30:04,277 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 08:30:04,278 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 289 flow [2023-08-30 08:30:04,278 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 08:30:04,279 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-08-30 08:30:04,279 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 289 flow [2023-08-30 08:30:04,279 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 08:30:04,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:04,279 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 08:30:04,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 08:30:04,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:04,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash 199884839, now seen corresponding path program 1 times [2023-08-30 08:30:04,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:04,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651891360] [2023-08-30 08:30:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:04,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:04,346 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 08:30:04,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:04,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651891360] [2023-08-30 08:30:04,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651891360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:04,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:04,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:30:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119605720] [2023-08-30 08:30:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:04,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:30:04,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:04,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:30:04,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:30:04,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:30:04,452 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 08:30:04,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:04,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:30:04,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:05,200 INFO L130 PetriNetUnfolder]: 4089/7201 cut-off events. [2023-08-30 08:30:05,200 INFO L131 PetriNetUnfolder]: For 2141/2175 co-relation queries the response was YES. [2023-08-30 08:30:05,208 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 08:30:05,226 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 203 selfloop transitions, 16 changer transitions 0/247 dead transitions. [2023-08-30 08:30:05,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 247 transitions, 1175 flow [2023-08-30 08:30:05,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:30:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:30:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1607 transitions. [2023-08-30 08:30:05,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899390243902439 [2023-08-30 08:30:05,229 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1607 transitions. [2023-08-30 08:30:05,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1607 transitions. [2023-08-30 08:30:05,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:05,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1607 transitions. [2023-08-30 08:30:05,232 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 08:30:05,235 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 08:30:05,236 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 08:30:05,236 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 289 flow. Second operand 8 states and 1607 transitions. [2023-08-30 08:30:05,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 247 transitions, 1175 flow [2023-08-30 08:30:05,239 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 08:30:05,241 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 375 flow [2023-08-30 08:30:05,241 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 08:30:05,241 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 11 predicate places. [2023-08-30 08:30:05,241 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 375 flow [2023-08-30 08:30:05,241 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 08:30:05,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:05,241 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 08:30:05,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:30:05,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:05,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:05,242 INFO L85 PathProgramCache]: Analyzing trace with hash 199884838, now seen corresponding path program 1 times [2023-08-30 08:30:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:05,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492875801] [2023-08-30 08:30:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:05,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:05,264 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 08:30:05,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492875801] [2023-08-30 08:30:05,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492875801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:05,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:05,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:30:05,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753949699] [2023-08-30 08:30:05,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:05,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:05,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:05,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:30:05,278 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 08:30:05,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:05,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:30:05,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:05,699 INFO L130 PetriNetUnfolder]: 2892/5574 cut-off events. [2023-08-30 08:30:05,699 INFO L131 PetriNetUnfolder]: For 1987/1997 co-relation queries the response was YES. [2023-08-30 08:30:05,706 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 08:30:05,717 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 84 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-30 08:30:05,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 130 transitions, 608 flow [2023-08-30 08:30:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:30:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:30:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-08-30 08:30:05,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540650406504065 [2023-08-30 08:30:05,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-08-30 08:30:05,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-08-30 08:30:05,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:05,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-08-30 08:30:05,720 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 08:30:05,721 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 08:30:05,730 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 08:30:05,730 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 375 flow. Second operand 3 states and 665 transitions. [2023-08-30 08:30:05,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 130 transitions, 608 flow [2023-08-30 08:30:05,734 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 08:30:05,735 INFO L231 Difference]: Finished difference. Result has 103 places, 104 transitions, 374 flow [2023-08-30 08:30:05,735 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 08:30:05,736 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:30:05,736 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 104 transitions, 374 flow [2023-08-30 08:30:05,736 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 08:30:05,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:05,736 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 08:30:05,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 08:30:05,737 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:05,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:05,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002933, now seen corresponding path program 1 times [2023-08-30 08:30:05,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:05,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905626577] [2023-08-30 08:30:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:05,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:05,769 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 08:30:05,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:05,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905626577] [2023-08-30 08:30:05,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905626577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:05,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:05,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:30:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800889745] [2023-08-30 08:30:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:05,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:30:05,775 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 08:30:05,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:05,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:30:05,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:06,280 INFO L130 PetriNetUnfolder]: 2873/5599 cut-off events. [2023-08-30 08:30:06,280 INFO L131 PetriNetUnfolder]: For 2085/2095 co-relation queries the response was YES. [2023-08-30 08:30:06,291 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 08:30:06,309 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 84 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2023-08-30 08:30:06,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 133 transitions, 675 flow [2023-08-30 08:30:06,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:30:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:30:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-08-30 08:30:06,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479674796747968 [2023-08-30 08:30:06,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-08-30 08:30:06,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-08-30 08:30:06,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:06,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-08-30 08:30:06,313 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 08:30:06,314 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 08:30:06,314 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 08:30:06,315 INFO L175 Difference]: Start difference. First operand has 103 places, 104 transitions, 374 flow. Second operand 3 states and 674 transitions. [2023-08-30 08:30:06,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 133 transitions, 675 flow [2023-08-30 08:30:06,318 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 08:30:06,320 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 382 flow [2023-08-30 08:30:06,320 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 08:30:06,320 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2023-08-30 08:30:06,320 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 382 flow [2023-08-30 08:30:06,320 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 08:30:06,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:06,320 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 08:30:06,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 08:30:06,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:06,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:06,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002935, now seen corresponding path program 1 times [2023-08-30 08:30:06,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:06,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715150731] [2023-08-30 08:30:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:06,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:06,349 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 08:30:06,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:06,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715150731] [2023-08-30 08:30:06,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715150731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:06,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:06,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:30:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614587319] [2023-08-30 08:30:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:06,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:06,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:06,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:06,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:06,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:30:06,355 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 08:30:06,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:06,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:30:06,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:06,773 INFO L130 PetriNetUnfolder]: 2754/5402 cut-off events. [2023-08-30 08:30:06,773 INFO L131 PetriNetUnfolder]: For 2149/2159 co-relation queries the response was YES. [2023-08-30 08:30:06,782 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 08:30:06,794 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 84 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2023-08-30 08:30:06,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 132 transitions, 679 flow [2023-08-30 08:30:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:30:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:30:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-30 08:30:06,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471544715447154 [2023-08-30 08:30:06,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-30 08:30:06,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-30 08:30:06,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:06,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-30 08:30:06,797 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 08:30:06,798 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 08:30:06,798 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 08:30:06,798 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 382 flow. Second operand 3 states and 673 transitions. [2023-08-30 08:30:06,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 132 transitions, 679 flow [2023-08-30 08:30:06,802 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 08:30:06,803 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 378 flow [2023-08-30 08:30:06,804 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 08:30:06,804 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:30:06,804 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 378 flow [2023-08-30 08:30:06,804 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 08:30:06,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:06,804 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 08:30:06,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 08:30:06,804 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:06,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:06,805 INFO L85 PathProgramCache]: Analyzing trace with hash 854518012, now seen corresponding path program 1 times [2023-08-30 08:30:06,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:06,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391286322] [2023-08-30 08:30:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:06,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:06,869 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 08:30:06,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:06,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391286322] [2023-08-30 08:30:06,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391286322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:06,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:06,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:30:06,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953763286] [2023-08-30 08:30:06,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:06,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:30:06,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:06,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:30:06,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:30:06,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:30:06,978 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 08:30:06,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:06,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:30:06,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:08,018 INFO L130 PetriNetUnfolder]: 5826/10024 cut-off events. [2023-08-30 08:30:08,019 INFO L131 PetriNetUnfolder]: For 4507/4543 co-relation queries the response was YES. [2023-08-30 08:30:08,032 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 08:30:08,059 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 220 selfloop transitions, 18 changer transitions 0/267 dead transitions. [2023-08-30 08:30:08,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 267 transitions, 1516 flow [2023-08-30 08:30:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:30:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:30:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1590 transitions. [2023-08-30 08:30:08,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2023-08-30 08:30:08,063 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1590 transitions. [2023-08-30 08:30:08,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1590 transitions. [2023-08-30 08:30:08,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:08,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1590 transitions. [2023-08-30 08:30:08,066 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 08:30:08,069 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 08:30:08,069 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 08:30:08,069 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 378 flow. Second operand 8 states and 1590 transitions. [2023-08-30 08:30:08,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 267 transitions, 1516 flow [2023-08-30 08:30:08,078 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 08:30:08,080 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 474 flow [2023-08-30 08:30:08,080 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 08:30:08,081 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 21 predicate places. [2023-08-30 08:30:08,081 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 474 flow [2023-08-30 08:30:08,081 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 08:30:08,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:08,081 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 08:30:08,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 08:30:08,082 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:08,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:08,082 INFO L85 PathProgramCache]: Analyzing trace with hash 854518013, now seen corresponding path program 1 times [2023-08-30 08:30:08,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:08,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684556076] [2023-08-30 08:30:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:08,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:08,106 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 08:30:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:08,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684556076] [2023-08-30 08:30:08,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684556076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:08,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:08,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:30:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787976331] [2023-08-30 08:30:08,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:08,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:08,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:08,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:30:08,121 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 08:30:08,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:08,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:30:08,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:08,852 INFO L130 PetriNetUnfolder]: 4161/7847 cut-off events. [2023-08-30 08:30:08,852 INFO L131 PetriNetUnfolder]: For 4337/4349 co-relation queries the response was YES. [2023-08-30 08:30:08,869 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 08:30:08,895 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 94 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-08-30 08:30:08,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 791 flow [2023-08-30 08:30:08,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:30:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:30:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-08-30 08:30:08,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349593495934959 [2023-08-30 08:30:08,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-08-30 08:30:08,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-08-30 08:30:08,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:08,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-08-30 08:30:08,899 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 08:30:08,900 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 08:30:08,901 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 08:30:08,901 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 474 flow. Second operand 3 states and 658 transitions. [2023-08-30 08:30:08,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 791 flow [2023-08-30 08:30:08,911 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 08:30:08,913 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 478 flow [2023-08-30 08:30:08,913 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 08:30:08,913 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 23 predicate places. [2023-08-30 08:30:08,914 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 478 flow [2023-08-30 08:30:08,914 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 08:30:08,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:08,914 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 08:30:08,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 08:30:08,914 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:08,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1293225098, now seen corresponding path program 1 times [2023-08-30 08:30:08,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:08,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558672935] [2023-08-30 08:30:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:08,974 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 08:30:08,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558672935] [2023-08-30 08:30:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558672935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:30:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978578037] [2023-08-30 08:30:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:08,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:30:08,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:30:08,977 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 08:30:08,983 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 08:30:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:09,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:30:09,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:30:09,153 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 08:30:09,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:30:09,187 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 08:30:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978578037] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:30:09,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:30:09,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 08:30:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451650990] [2023-08-30 08:30:09,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:30:09,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:30:09,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:30:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:30:09,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 410 [2023-08-30 08:30:09,239 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 08:30:09,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:09,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 410 [2023-08-30 08:30:09,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:11,736 INFO L130 PetriNetUnfolder]: 15115/25247 cut-off events. [2023-08-30 08:30:11,737 INFO L131 PetriNetUnfolder]: For 14072/14144 co-relation queries the response was YES. [2023-08-30 08:30:11,822 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 08:30:11,958 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 259 selfloop transitions, 19 changer transitions 0/303 dead transitions. [2023-08-30 08:30:11,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 303 transitions, 1749 flow [2023-08-30 08:30:11,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:30:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:30:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1339 transitions. [2023-08-30 08:30:11,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443089430894309 [2023-08-30 08:30:11,962 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1339 transitions. [2023-08-30 08:30:11,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1339 transitions. [2023-08-30 08:30:11,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:11,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1339 transitions. [2023-08-30 08:30:11,964 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 08:30:11,967 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 08:30:11,967 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 08:30:11,967 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 478 flow. Second operand 6 states and 1339 transitions. [2023-08-30 08:30:11,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 303 transitions, 1749 flow [2023-08-30 08:30:12,016 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 08:30:12,018 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 607 flow [2023-08-30 08:30:12,019 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 08:30:12,019 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 30 predicate places. [2023-08-30 08:30:12,019 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 607 flow [2023-08-30 08:30:12,020 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 08:30:12,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:12,020 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 08:30:12,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 08:30:12,225 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 08:30:12,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:12,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash 727042415, now seen corresponding path program 1 times [2023-08-30 08:30:12,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:12,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562897839] [2023-08-30 08:30:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:12,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:12,308 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 08:30:12,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:12,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562897839] [2023-08-30 08:30:12,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562897839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:12,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:12,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:30:12,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60215052] [2023-08-30 08:30:12,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:12,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:30:12,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:30:12,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:30:12,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 410 [2023-08-30 08:30:12,368 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 08:30:12,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:12,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 410 [2023-08-30 08:30:12,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:15,097 INFO L130 PetriNetUnfolder]: 14018/24610 cut-off events. [2023-08-30 08:30:15,097 INFO L131 PetriNetUnfolder]: For 17219/17383 co-relation queries the response was YES. [2023-08-30 08:30:15,204 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 08:30:15,299 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 140 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2023-08-30 08:30:15,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 196 transitions, 1232 flow [2023-08-30 08:30:15,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:30:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:30:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1031 transitions. [2023-08-30 08:30:15,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029268292682927 [2023-08-30 08:30:15,302 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1031 transitions. [2023-08-30 08:30:15,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1031 transitions. [2023-08-30 08:30:15,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:15,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1031 transitions. [2023-08-30 08:30:15,304 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 08:30:15,308 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 08:30:15,308 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 08:30:15,308 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 607 flow. Second operand 5 states and 1031 transitions. [2023-08-30 08:30:15,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 196 transitions, 1232 flow [2023-08-30 08:30:15,358 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 08:30:15,360 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 640 flow [2023-08-30 08:30:15,361 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 08:30:15,361 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 34 predicate places. [2023-08-30 08:30:15,362 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 640 flow [2023-08-30 08:30:15,362 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 08:30:15,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:15,362 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 08:30:15,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 08:30:15,362 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:15,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:15,363 INFO L85 PathProgramCache]: Analyzing trace with hash -573214515, now seen corresponding path program 1 times [2023-08-30 08:30:15,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:15,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350237504] [2023-08-30 08:30:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:15,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:15,496 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 08:30:15,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:15,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350237504] [2023-08-30 08:30:15,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350237504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:15,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:15,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:30:15,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62642493] [2023-08-30 08:30:15,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:30:15,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:30:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:30:15,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 410 [2023-08-30 08:30:15,572 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 08:30:15,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:15,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 410 [2023-08-30 08:30:15,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:18,548 INFO L130 PetriNetUnfolder]: 15367/26995 cut-off events. [2023-08-30 08:30:18,549 INFO L131 PetriNetUnfolder]: For 22426/22572 co-relation queries the response was YES. [2023-08-30 08:30:18,609 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 08:30:18,680 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 148 selfloop transitions, 9 changer transitions 0/204 dead transitions. [2023-08-30 08:30:18,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 204 transitions, 1371 flow [2023-08-30 08:30:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:30:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:30:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2023-08-30 08:30:18,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019512195121951 [2023-08-30 08:30:18,697 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2023-08-30 08:30:18,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2023-08-30 08:30:18,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:18,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2023-08-30 08:30:18,714 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 08:30:18,716 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 08:30:18,716 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 08:30:18,716 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 640 flow. Second operand 5 states and 1029 transitions. [2023-08-30 08:30:18,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 204 transitions, 1371 flow [2023-08-30 08:30:18,796 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 08:30:18,798 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 671 flow [2023-08-30 08:30:18,798 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 08:30:18,799 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 36 predicate places. [2023-08-30 08:30:18,799 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 671 flow [2023-08-30 08:30:18,799 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 08:30:18,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:18,799 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 08:30:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 08:30:18,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:18,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:18,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1799240676, now seen corresponding path program 1 times [2023-08-30 08:30:18,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:18,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953567068] [2023-08-30 08:30:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:18,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:18,873 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 08:30:18,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:18,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953567068] [2023-08-30 08:30:18,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953567068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:18,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:18,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:30:18,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359733202] [2023-08-30 08:30:18,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:18,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:30:18,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:18,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:30:18,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:30:18,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:30:18,996 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 08:30:18,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:18,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:30:18,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:23,052 INFO L130 PetriNetUnfolder]: 18568/32076 cut-off events. [2023-08-30 08:30:23,052 INFO L131 PetriNetUnfolder]: For 32369/32561 co-relation queries the response was YES. [2023-08-30 08:30:23,178 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 08:30:23,416 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 303 selfloop transitions, 31 changer transitions 0/369 dead transitions. [2023-08-30 08:30:23,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 369 transitions, 2501 flow [2023-08-30 08:30:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:30:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:30:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2354 transitions. [2023-08-30 08:30:23,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47845528455284553 [2023-08-30 08:30:23,419 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2354 transitions. [2023-08-30 08:30:23,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2354 transitions. [2023-08-30 08:30:23,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:23,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2354 transitions. [2023-08-30 08:30:23,422 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 08:30:23,426 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 08:30:23,427 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 08:30:23,427 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 671 flow. Second operand 12 states and 2354 transitions. [2023-08-30 08:30:23,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 369 transitions, 2501 flow [2023-08-30 08:30:23,528 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 08:30:23,530 INFO L231 Difference]: Finished difference. Result has 138 places, 136 transitions, 839 flow [2023-08-30 08:30:23,531 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 08:30:23,531 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 47 predicate places. [2023-08-30 08:30:23,531 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 839 flow [2023-08-30 08:30:23,531 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 08:30:23,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:23,532 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 08:30:23,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 08:30:23,532 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:23,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash -304450102, now seen corresponding path program 1 times [2023-08-30 08:30:23,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:23,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451264640] [2023-08-30 08:30:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:23,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:23,604 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 08:30:23,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451264640] [2023-08-30 08:30:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451264640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:23,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:23,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:30:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629269016] [2023-08-30 08:30:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:23,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:30:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:30:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:30:23,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:30:23,729 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 08:30:23,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:23,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:30:23,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:28,131 INFO L130 PetriNetUnfolder]: 21173/36309 cut-off events. [2023-08-30 08:30:28,131 INFO L131 PetriNetUnfolder]: For 50675/50923 co-relation queries the response was YES. [2023-08-30 08:30:28,451 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 08:30:28,565 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 313 selfloop transitions, 34 changer transitions 0/383 dead transitions. [2023-08-30 08:30:28,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 383 transitions, 2866 flow [2023-08-30 08:30:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:30:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:30:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2360 transitions. [2023-08-30 08:30:28,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-08-30 08:30:28,571 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2360 transitions. [2023-08-30 08:30:28,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2360 transitions. [2023-08-30 08:30:28,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:28,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2360 transitions. [2023-08-30 08:30:28,590 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 08:30:28,594 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 08:30:28,606 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 08:30:28,606 INFO L175 Difference]: Start difference. First operand has 138 places, 136 transitions, 839 flow. Second operand 12 states and 2360 transitions. [2023-08-30 08:30:28,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 383 transitions, 2866 flow [2023-08-30 08:30:28,800 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 08:30:28,804 INFO L231 Difference]: Finished difference. Result has 148 places, 148 transitions, 1011 flow [2023-08-30 08:30:28,804 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 08:30:28,805 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2023-08-30 08:30:28,805 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 148 transitions, 1011 flow [2023-08-30 08:30:28,806 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 08:30:28,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:28,806 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 08:30:28,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 08:30:28,806 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:28,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:28,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1009499629, now seen corresponding path program 1 times [2023-08-30 08:30:28,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:28,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925158852] [2023-08-30 08:30:28,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:28,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:28,935 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 08:30:28,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:28,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925158852] [2023-08-30 08:30:28,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925158852] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:30:28,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052847725] [2023-08-30 08:30:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:28,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:30:28,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:30:28,938 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 08:30:28,961 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 08:30:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:29,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:30:29,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:30:29,203 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 08:30:29,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:30:29,314 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 08:30:29,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052847725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:30:29,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:30:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:30:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901206690] [2023-08-30 08:30:29,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:30:29,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:30:29,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:29,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:30:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:30:29,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:30:29,548 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 08:30:29,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:29,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:30:29,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:40,415 INFO L130 PetriNetUnfolder]: 44583/73155 cut-off events. [2023-08-30 08:30:40,416 INFO L131 PetriNetUnfolder]: For 124577/124587 co-relation queries the response was YES. [2023-08-30 08:30:40,799 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 08:30:41,054 INFO L137 encePairwiseOnDemand]: 391/410 looper letters, 937 selfloop transitions, 123 changer transitions 14/1096 dead transitions. [2023-08-30 08:30:41,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1096 transitions, 8383 flow [2023-08-30 08:30:41,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:30:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:30:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6130 transitions. [2023-08-30 08:30:41,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46722560975609756 [2023-08-30 08:30:41,059 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6130 transitions. [2023-08-30 08:30:41,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6130 transitions. [2023-08-30 08:30:41,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:41,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6130 transitions. [2023-08-30 08:30:41,077 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 08:30:41,088 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 08:30:41,089 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 08:30:41,090 INFO L175 Difference]: Start difference. First operand has 148 places, 148 transitions, 1011 flow. Second operand 32 states and 6130 transitions. [2023-08-30 08:30:41,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1096 transitions, 8383 flow [2023-08-30 08:30:41,615 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 08:30:41,625 INFO L231 Difference]: Finished difference. Result has 186 places, 234 transitions, 2134 flow [2023-08-30 08:30:41,625 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 08:30:41,626 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2023-08-30 08:30:41,626 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 234 transitions, 2134 flow [2023-08-30 08:30:41,626 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 08:30:41,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:41,627 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 08:30:41,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 08:30:41,832 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 08:30:41,832 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:41,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:41,832 INFO L85 PathProgramCache]: Analyzing trace with hash -694326327, now seen corresponding path program 1 times [2023-08-30 08:30:41,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063271376] [2023-08-30 08:30:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:41,957 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 08:30:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063271376] [2023-08-30 08:30:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063271376] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:30:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787600443] [2023-08-30 08:30:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:41,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:30:41,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:30:41,977 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 08:30:41,978 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 08:30:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:42,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:30:42,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:30:42,192 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 08:30:42,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:30:42,318 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 08:30:42,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787600443] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:30:42,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:30:42,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:30:42,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878063296] [2023-08-30 08:30:42,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:30:42,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:30:42,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:42,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:30:42,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:30:42,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:30:42,512 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 08:30:42,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:42,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:30:42,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:55,431 INFO L130 PetriNetUnfolder]: 48430/79310 cut-off events. [2023-08-30 08:30:55,431 INFO L131 PetriNetUnfolder]: For 201083/201093 co-relation queries the response was YES. [2023-08-30 08:30:56,026 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 08:30:56,297 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 977 selfloop transitions, 170 changer transitions 19/1190 dead transitions. [2023-08-30 08:30:56,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1190 transitions, 10776 flow [2023-08-30 08:30:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:30:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:30:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6080 transitions. [2023-08-30 08:30:56,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2023-08-30 08:30:56,304 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6080 transitions. [2023-08-30 08:30:56,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6080 transitions. [2023-08-30 08:30:56,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:56,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6080 transitions. [2023-08-30 08:30:56,311 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 08:30:56,318 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 08:30:56,319 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 08:30:56,319 INFO L175 Difference]: Start difference. First operand has 186 places, 234 transitions, 2134 flow. Second operand 32 states and 6080 transitions. [2023-08-30 08:30:56,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1190 transitions, 10776 flow [2023-08-30 08:30:58,229 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 08:30:58,236 INFO L231 Difference]: Finished difference. Result has 213 places, 319 transitions, 3373 flow [2023-08-30 08:30:58,237 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 08:30:58,237 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 122 predicate places. [2023-08-30 08:30:58,237 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 319 transitions, 3373 flow [2023-08-30 08:30:58,238 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 08:30:58,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:58,238 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 08:30:58,243 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 08:30:58,443 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 08:30:58,444 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:58,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:58,444 INFO L85 PathProgramCache]: Analyzing trace with hash 54498219, now seen corresponding path program 1 times [2023-08-30 08:30:58,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:58,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429993914] [2023-08-30 08:30:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:58,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:58,642 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 08:30:58,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:58,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429993914] [2023-08-30 08:30:58,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429993914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:30:58,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856621205] [2023-08-30 08:30:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:58,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:30:58,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:30:58,644 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 08:30:58,649 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 08:30:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:58,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:30:58,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:30:58,969 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 08:30:58,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:30:59,128 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 08:30:59,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856621205] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:30:59,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:30:59,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:30:59,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54472277] [2023-08-30 08:30:59,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:30:59,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:30:59,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:30:59,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:30:59,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 410 [2023-08-30 08:30:59,257 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 08:30:59,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:59,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 410 [2023-08-30 08:30:59,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:27,791 INFO L130 PetriNetUnfolder]: 85206/143294 cut-off events. [2023-08-30 08:31:27,792 INFO L131 PetriNetUnfolder]: For 501563/502381 co-relation queries the response was YES. [2023-08-30 08:31:28,956 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 08:31:29,107 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 0 selfloop transitions, 0 changer transitions 1079/1079 dead transitions. [2023-08-30 08:31:29,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1079 transitions, 12474 flow [2023-08-30 08:31:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 08:31:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 08:31:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2397 transitions. [2023-08-30 08:31:29,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314855875831486 [2023-08-30 08:31:29,111 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2397 transitions. [2023-08-30 08:31:29,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2397 transitions. [2023-08-30 08:31:29,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:29,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2397 transitions. [2023-08-30 08:31:29,114 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 08:31:29,117 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 08:31:29,118 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 08:31:29,118 INFO L175 Difference]: Start difference. First operand has 213 places, 319 transitions, 3373 flow. Second operand 11 states and 2397 transitions. [2023-08-30 08:31:29,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1079 transitions, 12474 flow [2023-08-30 08:31:34,834 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 08:31:34,840 INFO L231 Difference]: Finished difference. Result has 207 places, 0 transitions, 0 flow [2023-08-30 08:31:34,841 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 08:31:34,842 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2023-08-30 08:31:34,842 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 0 transitions, 0 flow [2023-08-30 08:31:34,843 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 08:31:34,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 30 remaining) [2023-08-30 08:31:34,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-08-30 08:31:34,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-08-30 08:31:34,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-08-30 08:31:34,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2023-08-30 08:31:34,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2023-08-30 08:31:34,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-08-30 08:31:34,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-08-30 08:31:34,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2023-08-30 08:31:34,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-08-30 08:31:34,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-08-30 08:31:34,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-08-30 08:31:34,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-08-30 08:31:34,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-08-30 08:31:34,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2023-08-30 08:31:34,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-08-30 08:31:34,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-08-30 08:31:34,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2023-08-30 08:31:34,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2023-08-30 08:31:34,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2023-08-30 08:31:34,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-08-30 08:31:34,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-08-30 08:31:34,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-08-30 08:31:34,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-08-30 08:31:34,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2023-08-30 08:31:34,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-08-30 08:31:34,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-08-30 08:31:34,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-08-30 08:31:34,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-08-30 08:31:34,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2023-08-30 08:31:34,857 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 08:31:35,051 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 08:31:35,052 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 08:31:35,053 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 08:31:35,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:31:35,072 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:31:35,073 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:31:35,074 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 08:31:35,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:31:35,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:31:35,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:31:35,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:31:35,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:31:35,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:31:35,092 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:31:35,093 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:31:35,094 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 08:31:35,100 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:31:39,121 INFO L134 LiptonReduction]: Checked pairs total: 72968 [2023-08-30 08:31:39,121 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-30 08:31:39,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:31:39,124 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;@54735660, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:31:39,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:31:39,127 INFO L130 PetriNetUnfolder]: 3/31 cut-off events. [2023-08-30 08:31:39,127 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:31:39,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:39,127 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 08:31:39,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:31:39,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:39,128 INFO L85 PathProgramCache]: Analyzing trace with hash -574457129, now seen corresponding path program 1 times [2023-08-30 08:31:39,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:39,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411267878] [2023-08-30 08:31:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:39,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:31:39,148 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:31:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:31:39,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:31:39,163 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:31:39,163 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:31:39,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 08:31:39,163 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:31:39,164 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:31:39,164 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:31:39,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 08:31:39,201 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:31:39,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:31:39,246 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:31:39,246 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:31:39,250 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 08:31:39,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:31:39,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 329 transitions, 679 flow [2023-08-30 08:31:39,253 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:31:39,253 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:31:39,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:31:39,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:31:39,295 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:31:39,296 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:31:39,299 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 08:31:39,315 INFO L119 LiptonReduction]: Number of co-enabled transitions 64602 [2023-08-30 08:31:43,909 INFO L134 LiptonReduction]: Checked pairs total: 173976 [2023-08-30 08:31:43,909 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-08-30 08:31:43,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:31:43,911 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;@54735660, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:31:43,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-30 08:31:43,913 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:31:43,913 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 08:31:43,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:43,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:43,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:31:43,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:43,914 INFO L85 PathProgramCache]: Analyzing trace with hash 738447711, now seen corresponding path program 1 times [2023-08-30 08:31:43,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:43,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50076510] [2023-08-30 08:31:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:43,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:43,952 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 08:31:43,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:43,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50076510] [2023-08-30 08:31:43,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50076510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:43,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:43,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:31:43,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11936322] [2023-08-30 08:31:43,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:43,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:31:43,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:43,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:31:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:31:43,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 578 [2023-08-30 08:31:43,963 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 08:31:43,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:43,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 578 [2023-08-30 08:31:43,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:51,039 INFO L130 PetriNetUnfolder]: 75621/123101 cut-off events. [2023-08-30 08:31:51,039 INFO L131 PetriNetUnfolder]: For 3415/3415 co-relation queries the response was YES. [2023-08-30 08:31:51,200 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 08:31:51,585 INFO L137 encePairwiseOnDemand]: 562/578 looper letters, 228 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2023-08-30 08:31:51,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 293 transitions, 1112 flow [2023-08-30 08:31:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:31:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:31:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1667 transitions. [2023-08-30 08:31:51,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768166089965397 [2023-08-30 08:31:51,587 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1667 transitions. [2023-08-30 08:31:51,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1667 transitions. [2023-08-30 08:31:51,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:51,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1667 transitions. [2023-08-30 08:31:51,589 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 08:31:51,590 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 08:31:51,590 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 08:31:51,590 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 309 flow. Second operand 5 states and 1667 transitions. [2023-08-30 08:31:51,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 293 transitions, 1112 flow [2023-08-30 08:31:51,592 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 08:31:51,594 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 359 flow [2023-08-30 08:31:51,594 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 08:31:51,595 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 5 predicate places. [2023-08-30 08:31:51,595 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 359 flow [2023-08-30 08:31:51,595 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 08:31:51,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:51,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:51,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 08:31:51,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:31:51,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1549207263, now seen corresponding path program 1 times [2023-08-30 08:31:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:51,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773893126] [2023-08-30 08:31:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:51,641 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 08:31:51,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:51,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773893126] [2023-08-30 08:31:51,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773893126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:51,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:51,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:31:51,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005114202] [2023-08-30 08:31:51,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:51,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:31:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:51,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:31:51,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:31:51,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 578 [2023-08-30 08:31:51,700 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 08:31:51,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:51,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 578 [2023-08-30 08:31:51,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:08,485 INFO L130 PetriNetUnfolder]: 168734/238074 cut-off events. [2023-08-30 08:32:08,486 INFO L131 PetriNetUnfolder]: For 30640/34486 co-relation queries the response was YES. [2023-08-30 08:32:09,171 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 08:32:10,268 INFO L137 encePairwiseOnDemand]: 553/578 looper letters, 129 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-08-30 08:32:10,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 175 transitions, 717 flow [2023-08-30 08:32:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:32:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:32:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-08-30 08:32:10,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467128027681661 [2023-08-30 08:32:10,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-08-30 08:32:10,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-08-30 08:32:10,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:10,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-08-30 08:32:10,272 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 08:32:10,274 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 08:32:10,274 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 08:32:10,274 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 359 flow. Second operand 3 states and 948 transitions. [2023-08-30 08:32:10,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 175 transitions, 717 flow [2023-08-30 08:32:10,304 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 08:32:10,307 INFO L231 Difference]: Finished difference. Result has 138 places, 146 transitions, 425 flow [2023-08-30 08:32:10,307 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 08:32:10,308 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 8 predicate places. [2023-08-30 08:32:10,308 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 146 transitions, 425 flow [2023-08-30 08:32:10,308 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 08:32:10,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:10,309 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 08:32:10,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 08:32:10,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:32:10,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:10,309 INFO L85 PathProgramCache]: Analyzing trace with hash 928305410, now seen corresponding path program 1 times [2023-08-30 08:32:10,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:10,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98454982] [2023-08-30 08:32:10,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:10,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:10,370 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 08:32:10,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:10,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98454982] [2023-08-30 08:32:10,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98454982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:32:10,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:32:10,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:32:10,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307970168] [2023-08-30 08:32:10,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:32:10,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:32:10,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:10,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:32:10,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:32:10,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 578 [2023-08-30 08:32:10,482 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 08:32:10,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:10,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 578 [2023-08-30 08:32:10,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand