./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.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-1.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 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 --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 08:29:13,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:29:13,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:29:13,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:29:13,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:29:13,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:29:13,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:29:13,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:29:13,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:29:13,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:29:13,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:29:13,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:29:13,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:29:13,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:29:13,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:29:13,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:29:13,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:29:13,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:29:13,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:29:13,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:29:13,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:29:13,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:29:13,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:29:13,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:29:13,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:29:13,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:29:13,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:29:13,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:29:13,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:29:13,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:29:13,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:29:13,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:29:13,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:29:13,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:29:13,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:29:13,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:29:13,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:29:13,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:29:13,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:29:13,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:29:13,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:29:13,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:29:13,393 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:29:13,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:29:13,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:29:13,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:29:13,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:29:13,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:29:13,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:29:13,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:29:13,396 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:29:13,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:29:13,397 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:29:13,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:29:13,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:29:13,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:29:13,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:29:13,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:29:13,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:29:13,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:29:13,398 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:29:13,398 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:29:13,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:29:13,398 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:29:13,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:29:13,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:29:13,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:29:13,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:29:13,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:29:13,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:29:13,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:29:13,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:29:13,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:29:13,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:29:13,400 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:29:13,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:29:13,400 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:29:13,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:29:13,401 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:29:13,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:29:13,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:29:13,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:29:13,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:29:13,657 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:29:13,657 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:29:13,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2023-08-30 08:29:14,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:29:14,793 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:29:14,795 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2023-08-30 08:29:14,807 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e062e4957/51531136201a4b2bb2c56b2018bff7fe/FLAG21b8190eb [2023-08-30 08:29:14,826 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e062e4957/51531136201a4b2bb2c56b2018bff7fe [2023-08-30 08:29:14,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:29:14,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:29:14,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:29:14,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:29:14,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:29:14,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:29:14" (1/1) ... [2023-08-30 08:29:14,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac7d395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:14, skipping insertion in model container [2023-08-30 08:29:14,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:29:14" (1/1) ... [2023-08-30 08:29:14,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:29:14,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:29:15,135 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-1.i[31167,31180] [2023-08-30 08:29:15,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:29:15,153 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:29:15,206 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-1.i[31167,31180] [2023-08-30 08:29:15,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:29:15,240 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:29:15,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15 WrapperNode [2023-08-30 08:29:15,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:29:15,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:29:15,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:29:15,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:29:15,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,293 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 198 [2023-08-30 08:29:15,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:29:15,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:29:15,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:29:15,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:29:15,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:29:15,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:29:15,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:29:15,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:29:15,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (1/1) ... [2023-08-30 08:29:15,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:29:15,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:15,362 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 08:29:15,388 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 08:29:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:29:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 08:29:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 08:29:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:29:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:29:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:29:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:29:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:29:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:29:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:29:15,399 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 08:29:15,508 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:29:15,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:29:15,812 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:29:15,914 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:29:15,914 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 08:29:15,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:29:15 BoogieIcfgContainer [2023-08-30 08:29:15,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:29:15,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:29:15,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:29:15,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:29:15,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:29:14" (1/3) ... [2023-08-30 08:29:15,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67343633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:29:15, skipping insertion in model container [2023-08-30 08:29:15,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:29:15" (2/3) ... [2023-08-30 08:29:15,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67343633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:29:15, skipping insertion in model container [2023-08-30 08:29:15,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:29:15" (3/3) ... [2023-08-30 08:29:15,923 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i [2023-08-30 08:29:15,929 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:29:15,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:29:15,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 08:29:15,938 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:29:16,018 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:29:16,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:16,072 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:29:16,073 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:16,077 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 08:29:16,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:16,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:16,082 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:29:16,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:16,089 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:16,114 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:29:16,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:16,115 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 08:29:16,116 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:29:19,877 INFO L134 LiptonReduction]: Checked pairs total: 3076 [2023-08-30 08:29:19,877 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:29:19,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:29:19,890 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;@7bd8fbbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:29:19,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 08:29:19,895 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-08-30 08:29:19,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:19,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:19,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:19,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:19,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash 288098820, now seen corresponding path program 1 times [2023-08-30 08:29:19,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:19,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486197187] [2023-08-30 08:29:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:19,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:20,106 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 08:29:20,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:20,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486197187] [2023-08-30 08:29:20,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486197187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:20,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:20,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:20,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967580015] [2023-08-30 08:29:20,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:20,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:20,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:20,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:20,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2023-08-30 08:29:20,155 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 08:29:20,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:20,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2023-08-30 08:29:20,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:20,209 INFO L130 PetriNetUnfolder]: 52/119 cut-off events. [2023-08-30 08:29:20,209 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:20,210 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 08:29:20,211 INFO L137 encePairwiseOnDemand]: 258/269 looper letters, 27 selfloop transitions, 2 changer transitions 1/31 dead transitions. [2023-08-30 08:29:20,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 127 flow [2023-08-30 08:29:20,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-30 08:29:20,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48451053283767037 [2023-08-30 08:29:20,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-30 08:29:20,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-30 08:29:20,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:20,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-30 08:29:20,227 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 08:29:20,229 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 08:29:20,230 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 08:29:20,231 INFO L175 Difference]: Start difference. First operand has 34 places, 38 transitions, 81 flow. Second operand 3 states and 391 transitions. [2023-08-30 08:29:20,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 127 flow [2023-08-30 08:29:20,233 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 08:29:20,234 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 65 flow [2023-08-30 08:29:20,235 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 08:29:20,237 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:29:20,237 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 65 flow [2023-08-30 08:29:20,238 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 08:29:20,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:20,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:20,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:29:20,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:20,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1508206433, now seen corresponding path program 1 times [2023-08-30 08:29:20,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:20,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277078092] [2023-08-30 08:29:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:20,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:20,318 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 08:29:20,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277078092] [2023-08-30 08:29:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277078092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:29:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780258103] [2023-08-30 08:29:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:20,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:20,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:29:20,339 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 08:29:20,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:20,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:29:20,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:20,395 INFO L130 PetriNetUnfolder]: 58/134 cut-off events. [2023-08-30 08:29:20,395 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:29:20,395 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 08:29:20,396 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 30 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-30 08:29:20,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 143 flow [2023-08-30 08:29:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-30 08:29:20,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547707558859975 [2023-08-30 08:29:20,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-30 08:29:20,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-30 08:29:20,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:20,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-30 08:29:20,400 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 08:29:20,401 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 08:29:20,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:20,402 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 65 flow. Second operand 3 states and 367 transitions. [2023-08-30 08:29:20,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 143 flow [2023-08-30 08:29:20,402 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 08:29:20,403 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 79 flow [2023-08-30 08:29:20,403 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 08:29:20,403 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:29:20,403 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 79 flow [2023-08-30 08:29:20,404 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 08:29:20,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:20,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:20,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:29:20,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:20,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372441, now seen corresponding path program 1 times [2023-08-30 08:29:20,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:20,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710605020] [2023-08-30 08:29:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:20,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:20,510 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 08:29:20,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:20,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710605020] [2023-08-30 08:29:20,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710605020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:20,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:20,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:20,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670135301] [2023-08-30 08:29:20,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:20,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:29:20,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:20,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:29:20,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:29:20,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:29:20,591 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 08:29:20,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:20,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:29:20,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:20,685 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:29:20,685 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:20,685 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 08:29:20,686 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 44 selfloop transitions, 7 changer transitions 1/53 dead transitions. [2023-08-30 08:29:20,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 231 flow [2023-08-30 08:29:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:29:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:29:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 726 transitions. [2023-08-30 08:29:20,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385554965480616 [2023-08-30 08:29:20,689 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 726 transitions. [2023-08-30 08:29:20,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 726 transitions. [2023-08-30 08:29:20,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:20,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 726 transitions. [2023-08-30 08:29:20,690 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 08:29:20,692 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 08:29:20,693 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 08:29:20,693 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 79 flow. Second operand 7 states and 726 transitions. [2023-08-30 08:29:20,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 231 flow [2023-08-30 08:29:20,694 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 08:29:20,695 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 126 flow [2023-08-30 08:29:20,695 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 08:29:20,695 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-30 08:29:20,695 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 126 flow [2023-08-30 08:29:20,696 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 08:29:20,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:20,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:20,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:29:20,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:20,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372440, now seen corresponding path program 1 times [2023-08-30 08:29:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:20,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12857191] [2023-08-30 08:29:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:29:20,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:20,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12857191] [2023-08-30 08:29:20,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12857191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:20,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:20,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:20,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420570102] [2023-08-30 08:29:20,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:20,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:29:20,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:29:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:29:20,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:29:20,846 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 08:29:20,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:20,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:29:20,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:20,937 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:29:20,937 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 08:29:20,939 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 08:29:20,942 INFO L137 encePairwiseOnDemand]: 261/269 looper letters, 42 selfloop transitions, 9 changer transitions 1/53 dead transitions. [2023-08-30 08:29:20,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 272 flow [2023-08-30 08:29:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:29:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:29:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 725 transitions. [2023-08-30 08:29:20,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38502389803505044 [2023-08-30 08:29:20,944 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 725 transitions. [2023-08-30 08:29:20,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 725 transitions. [2023-08-30 08:29:20,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:20,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 725 transitions. [2023-08-30 08:29:20,949 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 08:29:20,952 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 08:29:20,952 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 08:29:20,952 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 126 flow. Second operand 7 states and 725 transitions. [2023-08-30 08:29:20,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 272 flow [2023-08-30 08:29:20,954 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 08:29:20,955 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 145 flow [2023-08-30 08:29:20,955 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 08:29:20,957 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-30 08:29:20,957 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 145 flow [2023-08-30 08:29:20,958 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 08:29:20,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:20,958 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 08:29:20,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:29:20,959 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:20,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265492, now seen corresponding path program 1 times [2023-08-30 08:29:20,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:20,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173457290] [2023-08-30 08:29:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:20,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:21,032 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 08:29:21,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:21,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173457290] [2023-08-30 08:29:21,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173457290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:21,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182863336] [2023-08-30 08:29:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:21,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:21,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:21,035 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 08:29:21,053 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 08:29:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:21,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:29:21,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:21,185 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 08:29:21,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:29:21,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182863336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:21,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:29:21,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 08:29:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955706668] [2023-08-30 08:29:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:21,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:29:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:21,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:29:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:29:21,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:29:21,226 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 08:29:21,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:21,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:29:21,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:21,281 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:29:21,281 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 08:29:21,281 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 08:29:21,282 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 33 selfloop transitions, 2 changer transitions 1/37 dead transitions. [2023-08-30 08:29:21,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 219 flow [2023-08-30 08:29:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:29:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:29:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 473 transitions. [2023-08-30 08:29:21,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395910780669145 [2023-08-30 08:29:21,283 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 473 transitions. [2023-08-30 08:29:21,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 473 transitions. [2023-08-30 08:29:21,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:21,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 473 transitions. [2023-08-30 08:29:21,285 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 08:29:21,286 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 08:29:21,286 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 08:29:21,286 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 145 flow. Second operand 4 states and 473 transitions. [2023-08-30 08:29:21,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 219 flow [2023-08-30 08:29:21,287 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 08:29:21,287 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 123 flow [2023-08-30 08:29:21,288 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 08:29:21,288 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-30 08:29:21,288 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 123 flow [2023-08-30 08:29:21,288 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 08:29:21,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:21,289 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 08:29:21,303 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 08:29:21,502 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 08:29:21,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:21,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265468, now seen corresponding path program 1 times [2023-08-30 08:29:21,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:21,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725792709] [2023-08-30 08:29:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:21,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:21,561 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 08:29:21,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:21,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725792709] [2023-08-30 08:29:21,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725792709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:21,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510609006] [2023-08-30 08:29:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:21,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:21,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:21,563 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 08:29:21,566 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 08:29:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:21,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:29:21,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:21,696 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 08:29:21,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:21,724 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 08:29:21,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510609006] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:21,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:21,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 08:29:21,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902115601] [2023-08-30 08:29:21,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:21,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:29:21,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:29:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:29:21,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 269 [2023-08-30 08:29:21,764 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 08:29:21,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:21,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 269 [2023-08-30 08:29:21,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:21,833 INFO L130 PetriNetUnfolder]: 79/182 cut-off events. [2023-08-30 08:29:21,833 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 08:29:21,833 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 08:29:21,834 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 40 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2023-08-30 08:29:21,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 241 flow [2023-08-30 08:29:21,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:29:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:29:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-08-30 08:29:21,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43271375464684014 [2023-08-30 08:29:21,836 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-08-30 08:29:21,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-08-30 08:29:21,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:21,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-08-30 08:29:21,838 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 08:29:21,839 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 08:29:21,840 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 08:29:21,840 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 123 flow. Second operand 5 states and 582 transitions. [2023-08-30 08:29:21,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 241 flow [2023-08-30 08:29:21,842 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 08:29:21,843 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 132 flow [2023-08-30 08:29:21,843 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 08:29:21,846 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-30 08:29:21,846 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 132 flow [2023-08-30 08:29:21,846 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 08:29:21,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:21,847 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 08:29:21,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 08:29:22,051 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 08:29:22,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:22,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:22,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916078, now seen corresponding path program 1 times [2023-08-30 08:29:22,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:22,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208441084] [2023-08-30 08:29:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:22,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:22,113 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 08:29:22,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:22,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208441084] [2023-08-30 08:29:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208441084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:22,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:22,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:22,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436730862] [2023-08-30 08:29:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:22,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:22,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:29:22,128 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 08:29:22,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:22,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:29:22,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:22,164 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:29:22,164 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 08:29:22,165 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 08:29:22,165 INFO L137 encePairwiseOnDemand]: 267/269 looper letters, 32 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 08:29:22,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 198 flow [2023-08-30 08:29:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:22,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-30 08:29:22,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423791821561338 [2023-08-30 08:29:22,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-30 08:29:22,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-30 08:29:22,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:22,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-30 08:29:22,168 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 08:29:22,169 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 08:29:22,170 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 08:29:22,170 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 132 flow. Second operand 3 states and 357 transitions. [2023-08-30 08:29:22,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 198 flow [2023-08-30 08:29:22,172 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 08:29:22,172 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 125 flow [2023-08-30 08:29:22,173 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 08:29:22,174 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-30 08:29:22,174 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 125 flow [2023-08-30 08:29:22,174 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 08:29:22,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:22,175 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 08:29:22,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:29:22,175 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:29:22,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:22,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916077, now seen corresponding path program 1 times [2023-08-30 08:29:22,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:22,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661332294] [2023-08-30 08:29:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:22,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:22,277 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 08:29:22,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:22,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661332294] [2023-08-30 08:29:22,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661332294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:22,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616990689] [2023-08-30 08:29:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:22,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:22,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:22,281 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 08:29:22,283 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 08:29:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:22,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:29:22,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:22,411 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 08:29:22,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:22,454 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 08:29:22,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616990689] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:22,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:22,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 08:29:22,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182350033] [2023-08-30 08:29:22,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:22,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:29:22,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:22,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:29:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:29:22,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 269 [2023-08-30 08:29:22,584 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 08:29:22,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:22,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 269 [2023-08-30 08:29:22,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:22,759 INFO L130 PetriNetUnfolder]: 103/233 cut-off events. [2023-08-30 08:29:22,759 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 08:29:22,759 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 08:29:22,760 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2023-08-30 08:29:22,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 357 flow [2023-08-30 08:29:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:29:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:29:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1163 transitions. [2023-08-30 08:29:22,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36028500619578685 [2023-08-30 08:29:22,763 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1163 transitions. [2023-08-30 08:29:22,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1163 transitions. [2023-08-30 08:29:22,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:22,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1163 transitions. [2023-08-30 08:29:22,766 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 08:29:22,769 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 08:29:22,770 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 08:29:22,770 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 125 flow. Second operand 12 states and 1163 transitions. [2023-08-30 08:29:22,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 357 flow [2023-08-30 08:29:22,771 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 08:29:22,772 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-30 08:29:22,772 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 08:29:22,774 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-30 08:29:22,774 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-30 08:29:22,775 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 08:29:22,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 08:29:22,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 08:29:22,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 08:29:22,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 08:29:22,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 08:29:22,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 08:29:22,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 08:29:22,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 08:29:22,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 08:29:22,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 08:29:22,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 08:29:22,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 08:29:22,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 08:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 08:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 08:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 08:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 08:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 08:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 08:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 08:29:22,791 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 08:29:22,985 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 08:29:22,985 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:22,987 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 08:29:22,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:22,998 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:29:22,998 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:22,998 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 08:29:22,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:22,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:22,999 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:29:22,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:23,000 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:23,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:29:23,006 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:29:23,006 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:23,006 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 08:29:23,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:29:26,384 INFO L134 LiptonReduction]: Checked pairs total: 2879 [2023-08-30 08:29:26,384 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:29:26,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:29:26,386 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;@7bd8fbbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:29:26,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:29:26,388 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 08:29:26,388 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:29:26,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:26,389 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 08:29:26,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:29:26,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:26,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1827183085, now seen corresponding path program 1 times [2023-08-30 08:29:26,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:26,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920106121] [2023-08-30 08:29:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:26,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:29:26,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:29:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:29:26,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:29:26,417 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:29:26,417 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:29:26,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:29:26,418 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:29:26,418 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:29:26,419 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:29:26,419 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 08:29:26,461 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:29:26,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:26,488 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:29:26,488 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:29:26,490 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 08:29:26,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:26,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:26,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:29:26,492 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:26,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:26,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:29:26,515 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:29:26,516 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:29:26,517 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 08:29:26,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:29:30,667 INFO L134 LiptonReduction]: Checked pairs total: 72746 [2023-08-30 08:29:30,667 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-30 08:29:30,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:29:30,670 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;@7bd8fbbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:29:30,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-30 08:29:30,674 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:29:30,674 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:29:30,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:30,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:30,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:30,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash -104723753, now seen corresponding path program 1 times [2023-08-30 08:29:30,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:30,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76774659] [2023-08-30 08:29:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:30,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:30,714 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 08:29:30,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:30,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76774659] [2023-08-30 08:29:30,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76774659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:30,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:30,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:29:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616311490] [2023-08-30 08:29:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:30,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:29:30,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:29:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:29:30,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:29:30,730 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 08:29:30,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:30,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:29:30,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:31,081 INFO L130 PetriNetUnfolder]: 1931/3617 cut-off events. [2023-08-30 08:29:31,081 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-30 08:29:31,084 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 08:29:31,096 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 105 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2023-08-30 08:29:31,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 550 flow [2023-08-30 08:29:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:29:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:29:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1111 transitions. [2023-08-30 08:29:31,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419512195121952 [2023-08-30 08:29:31,099 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1111 transitions. [2023-08-30 08:29:31,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1111 transitions. [2023-08-30 08:29:31,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:31,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1111 transitions. [2023-08-30 08:29:31,101 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 08:29:31,103 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 08:29:31,104 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 08:29:31,104 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 212 flow. Second operand 5 states and 1111 transitions. [2023-08-30 08:29:31,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 550 flow [2023-08-30 08:29:31,105 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 08:29:31,107 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 266 flow [2023-08-30 08:29:31,107 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 08:29:31,108 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-08-30 08:29:31,108 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 266 flow [2023-08-30 08:29:31,108 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 08:29:31,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:31,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:31,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:29:31,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:31,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1121630105, now seen corresponding path program 1 times [2023-08-30 08:29:31,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:31,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577621840] [2023-08-30 08:29:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:31,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:31,138 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 08:29:31,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:31,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577621840] [2023-08-30 08:29:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577621840] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:31,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:31,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:29:31,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814628305] [2023-08-30 08:29:31,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:31,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:31,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:31,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:31,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:31,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 410 [2023-08-30 08:29:31,164 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 08:29:31,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:31,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 410 [2023-08-30 08:29:31,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:31,477 INFO L130 PetriNetUnfolder]: 2391/4277 cut-off events. [2023-08-30 08:29:31,477 INFO L131 PetriNetUnfolder]: For 925/935 co-relation queries the response was YES. [2023-08-30 08:29:31,482 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 08:29:31,494 INFO L137 encePairwiseOnDemand]: 403/410 looper letters, 62 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-30 08:29:31,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 94 transitions, 380 flow [2023-08-30 08:29:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:31,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-30 08:29:31,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170731707317073 [2023-08-30 08:29:31,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-30 08:29:31,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-30 08:29:31,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:31,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-30 08:29:31,497 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 08:29:31,499 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 08:29:31,499 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 08:29:31,499 INFO L175 Difference]: Start difference. First operand has 96 places, 100 transitions, 266 flow. Second operand 3 states and 636 transitions. [2023-08-30 08:29:31,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 94 transitions, 380 flow [2023-08-30 08:29:31,500 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 08:29:31,502 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 256 flow [2023-08-30 08:29:31,503 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 08:29:31,503 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-08-30 08:29:31,504 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 256 flow [2023-08-30 08:29:31,504 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 08:29:31,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:31,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:31,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:29:31,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:31,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:31,505 INFO L85 PathProgramCache]: Analyzing trace with hash -410793662, now seen corresponding path program 1 times [2023-08-30 08:29:31,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:31,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328718933] [2023-08-30 08:29:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:31,540 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 08:29:31,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:31,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328718933] [2023-08-30 08:29:31,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328718933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:31,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:31,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:29:31,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271165558] [2023-08-30 08:29:31,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:31,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:31,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:31,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:31,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:31,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2023-08-30 08:29:31,572 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 08:29:31,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:31,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2023-08-30 08:29:31,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:32,009 INFO L130 PetriNetUnfolder]: 2769/5103 cut-off events. [2023-08-30 08:29:32,009 INFO L131 PetriNetUnfolder]: For 1140/1150 co-relation queries the response was YES. [2023-08-30 08:29:32,020 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 08:29:32,045 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 84 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 08:29:32,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 116 transitions, 507 flow [2023-08-30 08:29:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-30 08:29:32,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317073170731708 [2023-08-30 08:29:32,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-30 08:29:32,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-30 08:29:32,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:32,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-30 08:29:32,050 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 08:29:32,052 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 08:29:32,052 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 08:29:32,052 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 256 flow. Second operand 3 states and 654 transitions. [2023-08-30 08:29:32,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 116 transitions, 507 flow [2023-08-30 08:29:32,054 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 08:29:32,055 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 288 flow [2023-08-30 08:29:32,056 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 08:29:32,056 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:29:32,056 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 288 flow [2023-08-30 08:29:32,057 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 08:29:32,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:32,057 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 08:29:32,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 08:29:32,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:32,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478144, now seen corresponding path program 1 times [2023-08-30 08:29:32,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:32,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546223035] [2023-08-30 08:29:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:32,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:32,108 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 08:29:32,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:32,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546223035] [2023-08-30 08:29:32,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546223035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:32,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:32,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:32,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55970972] [2023-08-30 08:29:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:32,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:32,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:32,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:29:32,120 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 08:29:32,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:32,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:29:32,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:32,567 INFO L130 PetriNetUnfolder]: 2080/4294 cut-off events. [2023-08-30 08:29:32,567 INFO L131 PetriNetUnfolder]: For 910/920 co-relation queries the response was YES. [2023-08-30 08:29:32,578 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 08:29:32,595 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 75 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 08:29:32,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 511 flow [2023-08-30 08:29:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-30 08:29:32,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536585365853659 [2023-08-30 08:29:32,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-30 08:29:32,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-30 08:29:32,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:32,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-30 08:29:32,605 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 08:29:32,607 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 08:29:32,607 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 08:29:32,607 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 288 flow. Second operand 3 states and 681 transitions. [2023-08-30 08:29:32,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 511 flow [2023-08-30 08:29:32,609 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 08:29:32,610 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 293 flow [2023-08-30 08:29:32,611 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 08:29:32,612 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:29:32,612 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 293 flow [2023-08-30 08:29:32,612 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 08:29:32,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:32,612 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 08:29:32,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 08:29:32,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:32,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478172, now seen corresponding path program 1 times [2023-08-30 08:29:32,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:32,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872949919] [2023-08-30 08:29:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:32,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:32,651 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 08:29:32,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:32,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872949919] [2023-08-30 08:29:32,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872949919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:32,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:32,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:32,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863159733] [2023-08-30 08:29:32,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:32,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:32,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:32,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:32,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:32,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:29:32,659 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 08:29:32,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:32,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:29:32,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:33,078 INFO L130 PetriNetUnfolder]: 2005/4147 cut-off events. [2023-08-30 08:29:33,079 INFO L131 PetriNetUnfolder]: For 1019/1029 co-relation queries the response was YES. [2023-08-30 08:29:33,085 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 08:29:33,094 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 75 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-08-30 08:29:33,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 120 transitions, 512 flow [2023-08-30 08:29:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2023-08-30 08:29:33,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2023-08-30 08:29:33,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2023-08-30 08:29:33,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2023-08-30 08:29:33,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:33,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2023-08-30 08:29:33,097 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 08:29:33,099 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 08:29:33,099 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 08:29:33,099 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 293 flow. Second operand 3 states and 680 transitions. [2023-08-30 08:29:33,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 120 transitions, 512 flow [2023-08-30 08:29:33,101 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 08:29:33,102 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 289 flow [2023-08-30 08:29:33,102 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 08:29:33,103 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-08-30 08:29:33,103 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 289 flow [2023-08-30 08:29:33,104 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 08:29:33,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:33,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:33,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 08:29:33,104 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:33,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash 199884839, now seen corresponding path program 1 times [2023-08-30 08:29:33,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:33,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481811708] [2023-08-30 08:29:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:33,168 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 08:29:33,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:33,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481811708] [2023-08-30 08:29:33,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481811708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:33,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:33,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:33,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549219251] [2023-08-30 08:29:33,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:33,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:29:33,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:33,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:29:33,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:29:33,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:29:33,277 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 08:29:33,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:33,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:29:33,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:33,940 INFO L130 PetriNetUnfolder]: 4089/7201 cut-off events. [2023-08-30 08:29:33,940 INFO L131 PetriNetUnfolder]: For 2141/2175 co-relation queries the response was YES. [2023-08-30 08:29:33,950 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 08:29:33,967 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 203 selfloop transitions, 16 changer transitions 0/247 dead transitions. [2023-08-30 08:29:33,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 247 transitions, 1175 flow [2023-08-30 08:29:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:29:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:29:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1607 transitions. [2023-08-30 08:29:33,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899390243902439 [2023-08-30 08:29:33,971 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1607 transitions. [2023-08-30 08:29:33,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1607 transitions. [2023-08-30 08:29:33,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:33,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1607 transitions. [2023-08-30 08:29:33,974 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 08:29:33,976 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 08:29:33,977 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 08:29:33,977 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 289 flow. Second operand 8 states and 1607 transitions. [2023-08-30 08:29:33,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 247 transitions, 1175 flow [2023-08-30 08:29:33,981 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 08:29:33,983 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 375 flow [2023-08-30 08:29:33,984 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 08:29:33,984 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 11 predicate places. [2023-08-30 08:29:33,984 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 375 flow [2023-08-30 08:29:33,985 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 08:29:33,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:33,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:29:33,985 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:33,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:33,986 INFO L85 PathProgramCache]: Analyzing trace with hash 199884838, now seen corresponding path program 1 times [2023-08-30 08:29:33,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:33,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738264942] [2023-08-30 08:29:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:33,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:34,014 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 08:29:34,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:34,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738264942] [2023-08-30 08:29:34,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738264942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:34,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:34,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558652053] [2023-08-30 08:29:34,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:34,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:34,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:34,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:34,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:29:34,036 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 08:29:34,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:34,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:29:34,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:34,563 INFO L130 PetriNetUnfolder]: 2892/5574 cut-off events. [2023-08-30 08:29:34,563 INFO L131 PetriNetUnfolder]: For 1987/1997 co-relation queries the response was YES. [2023-08-30 08:29:34,572 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 08:29:34,587 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 84 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-30 08:29:34,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 130 transitions, 608 flow [2023-08-30 08:29:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-08-30 08:29:34,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540650406504065 [2023-08-30 08:29:34,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-08-30 08:29:34,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-08-30 08:29:34,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:34,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-08-30 08:29:34,590 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 08:29:34,592 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 08:29:34,601 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 08:29:34,601 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 375 flow. Second operand 3 states and 665 transitions. [2023-08-30 08:29:34,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 130 transitions, 608 flow [2023-08-30 08:29:34,605 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 08:29:34,607 INFO L231 Difference]: Finished difference. Result has 103 places, 104 transitions, 374 flow [2023-08-30 08:29:34,607 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 08:29:34,608 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:29:34,608 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 104 transitions, 374 flow [2023-08-30 08:29:34,609 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 08:29:34,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:34,609 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 08:29:34,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 08:29:34,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:34,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:34,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002933, now seen corresponding path program 1 times [2023-08-30 08:29:34,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:34,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531518858] [2023-08-30 08:29:34,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:34,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:34,650 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 08:29:34,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:34,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531518858] [2023-08-30 08:29:34,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531518858] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:34,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:34,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461246418] [2023-08-30 08:29:34,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:34,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:34,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:34,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:34,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:34,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:29:34,658 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 08:29:34,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:34,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:29:34,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:35,060 INFO L130 PetriNetUnfolder]: 2873/5599 cut-off events. [2023-08-30 08:29:35,060 INFO L131 PetriNetUnfolder]: For 2085/2095 co-relation queries the response was YES. [2023-08-30 08:29:35,069 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 08:29:35,081 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 84 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2023-08-30 08:29:35,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 133 transitions, 675 flow [2023-08-30 08:29:35,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-08-30 08:29:35,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479674796747968 [2023-08-30 08:29:35,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-08-30 08:29:35,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-08-30 08:29:35,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:35,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-08-30 08:29:35,085 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 08:29:35,086 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 08:29:35,086 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 08:29:35,086 INFO L175 Difference]: Start difference. First operand has 103 places, 104 transitions, 374 flow. Second operand 3 states and 674 transitions. [2023-08-30 08:29:35,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 133 transitions, 675 flow [2023-08-30 08:29:35,089 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 08:29:35,090 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 382 flow [2023-08-30 08:29:35,091 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 08:29:35,091 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2023-08-30 08:29:35,091 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 382 flow [2023-08-30 08:29:35,091 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 08:29:35,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:35,091 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 08:29:35,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 08:29:35,092 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:35,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:35,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002935, now seen corresponding path program 1 times [2023-08-30 08:29:35,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:35,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741392500] [2023-08-30 08:29:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:35,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:35,117 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 08:29:35,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741392500] [2023-08-30 08:29:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741392500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:35,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:35,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723008327] [2023-08-30 08:29:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:35,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:35,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:35,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:29:35,123 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 08:29:35,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:35,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:29:35,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:35,516 INFO L130 PetriNetUnfolder]: 2754/5402 cut-off events. [2023-08-30 08:29:35,517 INFO L131 PetriNetUnfolder]: For 2149/2159 co-relation queries the response was YES. [2023-08-30 08:29:35,527 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 08:29:35,538 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 84 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2023-08-30 08:29:35,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 132 transitions, 679 flow [2023-08-30 08:29:35,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-30 08:29:35,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471544715447154 [2023-08-30 08:29:35,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-30 08:29:35,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-30 08:29:35,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:35,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-30 08:29:35,541 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 08:29:35,542 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 08:29:35,543 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 08:29:35,543 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 382 flow. Second operand 3 states and 673 transitions. [2023-08-30 08:29:35,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 132 transitions, 679 flow [2023-08-30 08:29:35,547 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 08:29:35,548 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 378 flow [2023-08-30 08:29:35,548 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 08:29:35,548 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:29:35,549 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 378 flow [2023-08-30 08:29:35,549 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 08:29:35,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:35,549 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 08:29:35,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 08:29:35,549 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:35,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash 854518012, now seen corresponding path program 1 times [2023-08-30 08:29:35,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:35,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479222551] [2023-08-30 08:29:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:35,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:35,602 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 08:29:35,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:35,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479222551] [2023-08-30 08:29:35,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479222551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:35,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:35,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:35,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50992036] [2023-08-30 08:29:35,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:35,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:29:35,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:29:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:29:35,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:29:35,708 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 08:29:35,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:35,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:29:35,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:36,723 INFO L130 PetriNetUnfolder]: 5826/10024 cut-off events. [2023-08-30 08:29:36,723 INFO L131 PetriNetUnfolder]: For 4507/4543 co-relation queries the response was YES. [2023-08-30 08:29:36,738 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 08:29:36,760 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 220 selfloop transitions, 18 changer transitions 0/267 dead transitions. [2023-08-30 08:29:36,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 267 transitions, 1516 flow [2023-08-30 08:29:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:29:36,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:29:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1590 transitions. [2023-08-30 08:29:36,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2023-08-30 08:29:36,763 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1590 transitions. [2023-08-30 08:29:36,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1590 transitions. [2023-08-30 08:29:36,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:36,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1590 transitions. [2023-08-30 08:29:36,765 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 08:29:36,768 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 08:29:36,769 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 08:29:36,769 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 378 flow. Second operand 8 states and 1590 transitions. [2023-08-30 08:29:36,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 267 transitions, 1516 flow [2023-08-30 08:29:36,777 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 08:29:36,778 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 474 flow [2023-08-30 08:29:36,779 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 08:29:36,779 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 21 predicate places. [2023-08-30 08:29:36,779 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 474 flow [2023-08-30 08:29:36,779 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 08:29:36,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:36,780 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 08:29:36,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 08:29:36,780 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:36,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash 854518013, now seen corresponding path program 1 times [2023-08-30 08:29:36,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:36,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019072229] [2023-08-30 08:29:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:36,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:36,804 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 08:29:36,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:36,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019072229] [2023-08-30 08:29:36,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019072229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:36,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:36,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:36,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265221366] [2023-08-30 08:29:36,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:36,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:36,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:36,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:36,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:36,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:29:36,819 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 08:29:36,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:36,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:29:36,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:37,443 INFO L130 PetriNetUnfolder]: 4161/7847 cut-off events. [2023-08-30 08:29:37,443 INFO L131 PetriNetUnfolder]: For 4337/4349 co-relation queries the response was YES. [2023-08-30 08:29:37,459 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 08:29:37,476 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 94 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-08-30 08:29:37,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 791 flow [2023-08-30 08:29:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-08-30 08:29:37,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349593495934959 [2023-08-30 08:29:37,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-08-30 08:29:37,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-08-30 08:29:37,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:37,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-08-30 08:29:37,479 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 08:29:37,480 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 08:29:37,480 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 08:29:37,481 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 474 flow. Second operand 3 states and 658 transitions. [2023-08-30 08:29:37,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 791 flow [2023-08-30 08:29:37,490 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 08:29:37,492 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 478 flow [2023-08-30 08:29:37,492 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 08:29:37,492 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 23 predicate places. [2023-08-30 08:29:37,492 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 478 flow [2023-08-30 08:29:37,492 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 08:29:37,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:37,493 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 08:29:37,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 08:29:37,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:37,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1293225098, now seen corresponding path program 1 times [2023-08-30 08:29:37,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:37,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184619255] [2023-08-30 08:29:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:37,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:29:37,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:37,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184619255] [2023-08-30 08:29:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184619255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:37,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:29:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655050570] [2023-08-30 08:29:37,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:37,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:37,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 410 [2023-08-30 08:29:37,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:37,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:37,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 410 [2023-08-30 08:29:37,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:38,115 INFO L130 PetriNetUnfolder]: 3874/7244 cut-off events. [2023-08-30 08:29:38,116 INFO L131 PetriNetUnfolder]: For 4390/4402 co-relation queries the response was YES. [2023-08-30 08:29:38,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18360 conditions, 7244 events. 3874/7244 cut-off events. For 4390/4402 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 52115 event pairs, 2566 based on Foata normal form. 146/6702 useless extension candidates. Maximal degree in co-relation 18332. Up to 5633 conditions per place. [2023-08-30 08:29:38,147 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 90 selfloop transitions, 2 changer transitions 1/140 dead transitions. [2023-08-30 08:29:38,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 140 transitions, 778 flow [2023-08-30 08:29:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2023-08-30 08:29:38,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487804878048781 [2023-08-30 08:29:38,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2023-08-30 08:29:38,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2023-08-30 08:29:38,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:38,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2023-08-30 08:29:38,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:38,152 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 08:29:38,152 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 08:29:38,152 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 478 flow. Second operand 3 states and 675 transitions. [2023-08-30 08:29:38,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 140 transitions, 778 flow [2023-08-30 08:29:38,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 140 transitions, 778 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:29:38,162 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 480 flow [2023-08-30 08:29:38,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2023-08-30 08:29:38,164 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 25 predicate places. [2023-08-30 08:29:38,164 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 480 flow [2023-08-30 08:29:38,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:38,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:38,164 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-30 08:29:38,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 08:29:38,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:38,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1352162165, now seen corresponding path program 1 times [2023-08-30 08:29:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:38,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811893472] [2023-08-30 08:29:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811893472] [2023-08-30 08:29:38,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811893472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:38,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:38,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:29:38,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327122737] [2023-08-30 08:29:38,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:38,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 410 [2023-08-30 08:29:38,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:38,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:38,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 410 [2023-08-30 08:29:38,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:38,871 INFO L130 PetriNetUnfolder]: 3739/7143 cut-off events. [2023-08-30 08:29:38,872 INFO L131 PetriNetUnfolder]: For 4626/4644 co-relation queries the response was YES. [2023-08-30 08:29:38,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18223 conditions, 7143 events. 3739/7143 cut-off events. For 4626/4644 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 51713 event pairs, 2534 based on Foata normal form. 158/6673 useless extension candidates. Maximal degree in co-relation 18194. Up to 5527 conditions per place. [2023-08-30 08:29:38,907 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 87 selfloop transitions, 2 changer transitions 3/139 dead transitions. [2023-08-30 08:29:38,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 139 transitions, 789 flow [2023-08-30 08:29:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-08-30 08:29:38,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5463414634146342 [2023-08-30 08:29:38,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-08-30 08:29:38,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-08-30 08:29:38,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:38,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-08-30 08:29:38,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:38,912 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 08:29:38,912 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 08:29:38,912 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 480 flow. Second operand 3 states and 672 transitions. [2023-08-30 08:29:38,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 139 transitions, 789 flow [2023-08-30 08:29:38,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 139 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:29:38,923 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 480 flow [2023-08-30 08:29:38,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2023-08-30 08:29:38,924 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 26 predicate places. [2023-08-30 08:29:38,924 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 480 flow [2023-08-30 08:29:38,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:38,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:38,925 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] [2023-08-30 08:29:38,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 08:29:38,926 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:38,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash 818509966, now seen corresponding path program 1 times [2023-08-30 08:29:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:38,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784232694] [2023-08-30 08:29:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:38,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:39,017 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 08:29:39,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:39,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784232694] [2023-08-30 08:29:39,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784232694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:39,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:39,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:39,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817339749] [2023-08-30 08:29:39,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:39,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:29:39,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:39,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:29:39,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:29:39,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2023-08-30 08:29:39,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 480 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:39,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:39,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2023-08-30 08:29:39,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:40,099 INFO L130 PetriNetUnfolder]: 5815/10653 cut-off events. [2023-08-30 08:29:40,099 INFO L131 PetriNetUnfolder]: For 7000/7158 co-relation queries the response was YES. [2023-08-30 08:29:40,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27809 conditions, 10653 events. 5815/10653 cut-off events. For 7000/7158 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 78445 event pairs, 835 based on Foata normal form. 402/10395 useless extension candidates. Maximal degree in co-relation 27780. Up to 7534 conditions per place. [2023-08-30 08:29:40,140 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 132 selfloop transitions, 9 changer transitions 0/172 dead transitions. [2023-08-30 08:29:40,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1013 flow [2023-08-30 08:29:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:29:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:29:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 874 transitions. [2023-08-30 08:29:40,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329268292682927 [2023-08-30 08:29:40,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 874 transitions. [2023-08-30 08:29:40,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 874 transitions. [2023-08-30 08:29:40,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:40,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 874 transitions. [2023-08-30 08:29:40,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:40,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:40,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:40,147 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 480 flow. Second operand 4 states and 874 transitions. [2023-08-30 08:29:40,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1013 flow [2023-08-30 08:29:40,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 172 transitions, 1010 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:29:40,163 INFO L231 Difference]: Finished difference. Result has 120 places, 112 transitions, 532 flow [2023-08-30 08:29:40,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=532, PETRI_PLACES=120, PETRI_TRANSITIONS=112} [2023-08-30 08:29:40,163 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2023-08-30 08:29:40,163 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 112 transitions, 532 flow [2023-08-30 08:29:40,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:40,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:40,164 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 08:29:40,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 08:29:40,164 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:40,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:40,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1799240676, now seen corresponding path program 1 times [2023-08-30 08:29:40,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:40,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443434495] [2023-08-30 08:29:40,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:40,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:40,235 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 08:29:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443434495] [2023-08-30 08:29:40,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443434495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:40,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:40,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:29:40,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844360475] [2023-08-30 08:29:40,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:40,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:29:40,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:40,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:29:40,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:29:40,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:29:40,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 532 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 08:29:40,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:40,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:29:40,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:41,807 INFO L130 PetriNetUnfolder]: 7657/13709 cut-off events. [2023-08-30 08:29:41,807 INFO L131 PetriNetUnfolder]: For 11286/11622 co-relation queries the response was YES. [2023-08-30 08:29:41,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37593 conditions, 13709 events. 7657/13709 cut-off events. For 11286/11622 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 102422 event pairs, 740 based on Foata normal form. 120/12911 useless extension candidates. Maximal degree in co-relation 37562. Up to 5871 conditions per place. [2023-08-30 08:29:41,870 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 293 selfloop transitions, 31 changer transitions 0/353 dead transitions. [2023-08-30 08:29:41,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 353 transitions, 2210 flow [2023-08-30 08:29:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:29:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:29:41,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2360 transitions. [2023-08-30 08:29:41,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-08-30 08:29:41,874 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2360 transitions. [2023-08-30 08:29:41,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2360 transitions. [2023-08-30 08:29:41,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:41,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2360 transitions. [2023-08-30 08:29:41,877 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 08:29:41,881 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 08:29:41,881 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 08:29:41,882 INFO L175 Difference]: Start difference. First operand has 120 places, 112 transitions, 532 flow. Second operand 12 states and 2360 transitions. [2023-08-30 08:29:41,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 353 transitions, 2210 flow [2023-08-30 08:29:41,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 353 transitions, 2187 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 08:29:41,901 INFO L231 Difference]: Finished difference. Result has 132 places, 126 transitions, 691 flow [2023-08-30 08:29:41,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=691, PETRI_PLACES=132, PETRI_TRANSITIONS=126} [2023-08-30 08:29:41,902 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2023-08-30 08:29:41,902 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions, 691 flow [2023-08-30 08:29:41,902 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 08:29:41,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:41,903 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 08:29:41,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 08:29:41,903 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:41,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1931529526, now seen corresponding path program 1 times [2023-08-30 08:29:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:41,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266535871] [2023-08-30 08:29:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:41,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:41,969 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 08:29:41,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:41,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266535871] [2023-08-30 08:29:41,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266535871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:41,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:41,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:29:41,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718571036] [2023-08-30 08:29:41,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:41,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:29:41,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:41,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:29:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:29:42,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:29:42,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions, 691 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 08:29:42,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:42,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:29:42,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:43,737 INFO L130 PetriNetUnfolder]: 9820/17266 cut-off events. [2023-08-30 08:29:43,738 INFO L131 PetriNetUnfolder]: For 19298/19464 co-relation queries the response was YES. [2023-08-30 08:29:43,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49992 conditions, 17266 events. 9820/17266 cut-off events. For 19298/19464 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 130739 event pairs, 1131 based on Foata normal form. 130/16203 useless extension candidates. Maximal degree in co-relation 49958. Up to 7758 conditions per place. [2023-08-30 08:29:43,839 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 307 selfloop transitions, 34 changer transitions 0/371 dead transitions. [2023-08-30 08:29:43,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 371 transitions, 2569 flow [2023-08-30 08:29:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:29:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:29:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2366 transitions. [2023-08-30 08:29:43,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48089430894308943 [2023-08-30 08:29:43,842 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2366 transitions. [2023-08-30 08:29:43,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2366 transitions. [2023-08-30 08:29:43,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:43,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2366 transitions. [2023-08-30 08:29:43,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 197.16666666666666) internal successors, (2366), 12 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:43,849 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 08:29:43,849 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 08:29:43,849 INFO L175 Difference]: Start difference. First operand has 132 places, 126 transitions, 691 flow. Second operand 12 states and 2366 transitions. [2023-08-30 08:29:43,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 371 transitions, 2569 flow [2023-08-30 08:29:43,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 371 transitions, 2536 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 08:29:43,902 INFO L231 Difference]: Finished difference. Result has 142 places, 140 transitions, 857 flow [2023-08-30 08:29:43,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=857, PETRI_PLACES=142, PETRI_TRANSITIONS=140} [2023-08-30 08:29:43,903 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 51 predicate places. [2023-08-30 08:29:43,903 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 140 transitions, 857 flow [2023-08-30 08:29:43,903 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 08:29:43,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:43,903 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] [2023-08-30 08:29:43,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 08:29:43,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:43,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:43,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1325404433, now seen corresponding path program 1 times [2023-08-30 08:29:43,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:43,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288780963] [2023-08-30 08:29:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:43,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 08:29:43,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288780963] [2023-08-30 08:29:43,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288780963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:43,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:43,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:29:43,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936087473] [2023-08-30 08:29:43,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:43,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:29:43,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:43,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:29:43,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:29:43,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 410 [2023-08-30 08:29:43,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 140 transitions, 857 flow. Second operand has 4 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:43,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:43,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 410 [2023-08-30 08:29:43,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:46,598 INFO L130 PetriNetUnfolder]: 13880/24312 cut-off events. [2023-08-30 08:29:46,598 INFO L131 PetriNetUnfolder]: For 35747/35889 co-relation queries the response was YES. [2023-08-30 08:29:46,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73191 conditions, 24312 events. 13880/24312 cut-off events. For 35747/35889 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 192635 event pairs, 2757 based on Foata normal form. 1058/23668 useless extension candidates. Maximal degree in co-relation 73153. Up to 12366 conditions per place. [2023-08-30 08:29:46,786 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 219 selfloop transitions, 27 changer transitions 0/277 dead transitions. [2023-08-30 08:29:46,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 277 transitions, 2190 flow [2023-08-30 08:29:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:29:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:29:46,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 893 transitions. [2023-08-30 08:29:46,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445121951219513 [2023-08-30 08:29:46,788 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 893 transitions. [2023-08-30 08:29:46,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 893 transitions. [2023-08-30 08:29:46,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:46,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 893 transitions. [2023-08-30 08:29:46,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:46,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:46,791 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:46,791 INFO L175 Difference]: Start difference. First operand has 142 places, 140 transitions, 857 flow. Second operand 4 states and 893 transitions. [2023-08-30 08:29:46,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 277 transitions, 2190 flow [2023-08-30 08:29:47,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 277 transitions, 2179 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:29:47,109 INFO L231 Difference]: Finished difference. Result has 142 places, 148 transitions, 1013 flow [2023-08-30 08:29:47,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1013, PETRI_PLACES=142, PETRI_TRANSITIONS=148} [2023-08-30 08:29:47,109 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 51 predicate places. [2023-08-30 08:29:47,109 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 1013 flow [2023-08-30 08:29:47,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:47,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:47,110 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:47,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 08:29:47,110 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:47,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:47,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1117930030, now seen corresponding path program 1 times [2023-08-30 08:29:47,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:47,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852372184] [2023-08-30 08:29:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:47,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:47,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:47,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852372184] [2023-08-30 08:29:47,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852372184] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:47,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131181794] [2023-08-30 08:29:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:47,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:47,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:47,172 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 08:29:47,188 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 08:29:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:47,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:29:47,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:47,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:47,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131181794] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:47,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:47,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 08:29:47,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696872644] [2023-08-30 08:29:47,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:47,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:29:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:47,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:29:47,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:29:47,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 410 [2023-08-30 08:29:47,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 1013 flow. Second operand has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:47,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:47,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 410 [2023-08-30 08:29:47,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:54,217 INFO L130 PetriNetUnfolder]: 34509/58521 cut-off events. [2023-08-30 08:29:54,217 INFO L131 PetriNetUnfolder]: For 94832/95000 co-relation queries the response was YES. [2023-08-30 08:29:54,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177903 conditions, 58521 events. 34509/58521 cut-off events. For 94832/95000 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 473243 event pairs, 1057 based on Foata normal form. 1460/55907 useless extension candidates. Maximal degree in co-relation 177862. Up to 18842 conditions per place. [2023-08-30 08:29:54,758 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 349 selfloop transitions, 35 changer transitions 0/411 dead transitions. [2023-08-30 08:29:54,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 411 transitions, 3131 flow [2023-08-30 08:29:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:29:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:29:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1735 transitions. [2023-08-30 08:29:54,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289634146341463 [2023-08-30 08:29:54,760 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1735 transitions. [2023-08-30 08:29:54,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1735 transitions. [2023-08-30 08:29:54,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:54,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1735 transitions. [2023-08-30 08:29:54,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 216.875) internal successors, (1735), 8 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:54,765 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 08:29:54,765 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 08:29:54,765 INFO L175 Difference]: Start difference. First operand has 142 places, 148 transitions, 1013 flow. Second operand 8 states and 1735 transitions. [2023-08-30 08:29:54,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 411 transitions, 3131 flow [2023-08-30 08:29:55,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 411 transitions, 3095 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:29:55,201 INFO L231 Difference]: Finished difference. Result has 147 places, 156 transitions, 1145 flow [2023-08-30 08:29:55,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1145, PETRI_PLACES=147, PETRI_TRANSITIONS=156} [2023-08-30 08:29:55,201 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2023-08-30 08:29:55,202 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 156 transitions, 1145 flow [2023-08-30 08:29:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:55,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:55,202 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 08:29:55,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 08:29:55,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 08:29:55,408 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:55,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash 751907127, now seen corresponding path program 1 times [2023-08-30 08:29:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:55,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466795750] [2023-08-30 08:29:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:55,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:55,522 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 08:29:55,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:55,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466795750] [2023-08-30 08:29:55,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466795750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:55,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832842931] [2023-08-30 08:29:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:55,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:55,524 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 08:29:55,526 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 08:29:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:55,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:29:55,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:55,738 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 08:29:55,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:55,837 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 08:29:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832842931] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:55,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:55,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:29:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227604305] [2023-08-30 08:29:55,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:55,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:29:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:55,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:29:55,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:29:56,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:29:56,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 156 transitions, 1145 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 08:29:56,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:56,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:29:56,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:04,995 INFO L130 PetriNetUnfolder]: 40941/68243 cut-off events. [2023-08-30 08:30:04,995 INFO L131 PetriNetUnfolder]: For 111839/111849 co-relation queries the response was YES. [2023-08-30 08:30:05,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211618 conditions, 68243 events. 40941/68243 cut-off events. For 111839/111849 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 555020 event pairs, 959 based on Foata normal form. 608/64226 useless extension candidates. Maximal degree in co-relation 211573. Up to 16752 conditions per place. [2023-08-30 08:30:05,585 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 861 selfloop transitions, 133 changer transitions 64/1080 dead transitions. [2023-08-30 08:30:05,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1080 transitions, 8164 flow [2023-08-30 08:30:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:30:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:30:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6093 transitions. [2023-08-30 08:30:05,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46440548780487806 [2023-08-30 08:30:05,590 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6093 transitions. [2023-08-30 08:30:05,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6093 transitions. [2023-08-30 08:30:05,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:05,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6093 transitions. [2023-08-30 08:30:05,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 190.40625) internal successors, (6093), 32 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:05,604 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 08:30:05,605 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 08:30:05,605 INFO L175 Difference]: Start difference. First operand has 147 places, 156 transitions, 1145 flow. Second operand 32 states and 6093 transitions. [2023-08-30 08:30:05,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 1080 transitions, 8164 flow [2023-08-30 08:30:06,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1080 transitions, 8106 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-30 08:30:06,309 INFO L231 Difference]: Finished difference. Result has 177 places, 237 transitions, 2130 flow [2023-08-30 08:30:06,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2130, PETRI_PLACES=177, PETRI_TRANSITIONS=237} [2023-08-30 08:30:06,309 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 86 predicate places. [2023-08-30 08:30:06,310 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 237 transitions, 2130 flow [2023-08-30 08:30:06,310 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 08:30:06,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:06,310 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 08:30:06,315 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 08:30:06,511 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,SelfDestructingSolverStorable27 [2023-08-30 08:30:06,511 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:30:06,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:06,511 INFO L85 PathProgramCache]: Analyzing trace with hash -694326327, now seen corresponding path program 1 times [2023-08-30 08:30:06,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:06,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21577878] [2023-08-30 08:30:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:06,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:06,634 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 08:30:06,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:06,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21577878] [2023-08-30 08:30:06,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21577878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:30:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143481355] [2023-08-30 08:30:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:06,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:30:06,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:30:06,649 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 08:30:06,651 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 08:30:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:06,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:30:06,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:30:06,994 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 08:30:06,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:30:07,105 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 08:30:07,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143481355] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:30:07,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:30:07,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:30:07,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100283187] [2023-08-30 08:30:07,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:30:07,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:30:07,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:07,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:30:07,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:30:07,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:30:07,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 237 transitions, 2130 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 08:30:07,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:07,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:30:07,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:17,600 INFO L130 PetriNetUnfolder]: 44428/73940 cut-off events. [2023-08-30 08:30:17,600 INFO L131 PetriNetUnfolder]: For 151371/151381 co-relation queries the response was YES. [2023-08-30 08:30:18,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239307 conditions, 73940 events. 44428/73940 cut-off events. For 151371/151381 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 607633 event pairs, 1092 based on Foata normal form. 676/69582 useless extension candidates. Maximal degree in co-relation 239259. Up to 17857 conditions per place. [2023-08-30 08:30:18,059 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 0 selfloop transitions, 0 changer transitions 1187/1187 dead transitions. [2023-08-30 08:30:18,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1187 transitions, 10241 flow [2023-08-30 08:30:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:30:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:30:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6066 transitions. [2023-08-30 08:30:18,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46234756097560975 [2023-08-30 08:30:18,064 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6066 transitions. [2023-08-30 08:30:18,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6066 transitions. [2023-08-30 08:30:18,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:18,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6066 transitions. [2023-08-30 08:30:18,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 189.5625) internal successors, (6066), 32 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:18,074 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 08:30:18,075 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 08:30:18,075 INFO L175 Difference]: Start difference. First operand has 177 places, 237 transitions, 2130 flow. Second operand 32 states and 6066 transitions. [2023-08-30 08:30:18,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1187 transitions, 10241 flow [2023-08-30 08:30:19,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 1187 transitions, 9601 flow, removed 74 selfloop flow, removed 14 redundant places. [2023-08-30 08:30:19,217 INFO L231 Difference]: Finished difference. Result has 193 places, 0 transitions, 0 flow [2023-08-30 08:30:19,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=0, PETRI_PLACES=193, PETRI_TRANSITIONS=0} [2023-08-30 08:30:19,217 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 102 predicate places. [2023-08-30 08:30:19,218 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 0 transitions, 0 flow [2023-08-30 08:30:19,218 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 08:30:19,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 30 remaining) [2023-08-30 08:30:19,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-08-30 08:30:19,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-08-30 08:30:19,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-08-30 08:30:19,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2023-08-30 08:30:19,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2023-08-30 08:30:19,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-08-30 08:30:19,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-08-30 08:30:19,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2023-08-30 08:30:19,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-08-30 08:30:19,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-08-30 08:30:19,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-08-30 08:30:19,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-08-30 08:30:19,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-08-30 08:30:19,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2023-08-30 08:30:19,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-08-30 08:30:19,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-08-30 08:30:19,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2023-08-30 08:30:19,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2023-08-30 08:30:19,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2023-08-30 08:30:19,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-08-30 08:30:19,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-08-30 08:30:19,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-08-30 08:30:19,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-08-30 08:30:19,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2023-08-30 08:30:19,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-08-30 08:30:19,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-08-30 08:30:19,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-08-30 08:30:19,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-08-30 08:30:19,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2023-08-30 08:30:19,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 08:30:19,421 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,SelfDestructingSolverStorable28 [2023-08-30 08:30:19,422 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, 1] [2023-08-30 08:30:19,422 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 08:30:19,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:19,444 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:30:19,444 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:30:19,445 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 08:30:19,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:19,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:19,447 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:30:19,447 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:19,447 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:19,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:19,464 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:30:19,464 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:30:19,465 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 08:30:19,472 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:30:23,347 INFO L134 LiptonReduction]: Checked pairs total: 72968 [2023-08-30 08:30:23,347 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-30 08:30:23,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:30:23,355 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;@7bd8fbbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:30:23,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:30:23,358 INFO L130 PetriNetUnfolder]: 3/31 cut-off events. [2023-08-30 08:30:23,358 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:30:23,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:23,358 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 08:30:23,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:30:23,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:23,359 INFO L85 PathProgramCache]: Analyzing trace with hash -574457129, now seen corresponding path program 1 times [2023-08-30 08:30:23,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:23,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187356382] [2023-08-30 08:30:23,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:23,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:30:23,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:30:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:30:23,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:30:23,377 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:30:23,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:30:23,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 08:30:23,378 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:30:23,378 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:30:23,378 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:30:23,378 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 08:30:23,414 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:30:23,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:23,456 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:30:23,460 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:30:23,465 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 08:30:23,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:23,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:23,467 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:30:23,467 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:23,467 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:23,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:23,508 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:30:23,508 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:30:23,511 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 08:30:23,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 64602 [2023-08-30 08:30:28,639 INFO L134 LiptonReduction]: Checked pairs total: 173976 [2023-08-30 08:30:28,639 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-08-30 08:30:28,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:30:28,640 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;@7bd8fbbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:30:28,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-30 08:30:28,643 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:30:28,643 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 08:30:28,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:28,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:28,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:30:28,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash 738447711, now seen corresponding path program 1 times [2023-08-30 08:30:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:28,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693956800] [2023-08-30 08:30:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:28,669 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 08:30:28,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:28,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693956800] [2023-08-30 08:30:28,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693956800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:28,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:28,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:30:28,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027923740] [2023-08-30 08:30:28,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:28,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:30:28,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:28,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:30:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:30:28,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 578 [2023-08-30 08:30:28,687 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 08:30:28,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:28,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 578 [2023-08-30 08:30:28,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:35,375 INFO L130 PetriNetUnfolder]: 75621/123101 cut-off events. [2023-08-30 08:30:35,375 INFO L131 PetriNetUnfolder]: For 3415/3415 co-relation queries the response was YES. [2023-08-30 08:30:35,568 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 08:30:35,935 INFO L137 encePairwiseOnDemand]: 562/578 looper letters, 228 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2023-08-30 08:30:35,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 293 transitions, 1112 flow [2023-08-30 08:30:35,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:30:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:30:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1667 transitions. [2023-08-30 08:30:35,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768166089965397 [2023-08-30 08:30:35,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1667 transitions. [2023-08-30 08:30:35,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1667 transitions. [2023-08-30 08:30:35,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:35,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1667 transitions. [2023-08-30 08:30:35,938 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 08:30:35,940 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 08:30:35,940 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 08:30:35,940 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 309 flow. Second operand 5 states and 1667 transitions. [2023-08-30 08:30:35,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 293 transitions, 1112 flow [2023-08-30 08:30:35,942 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 08:30:35,943 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 359 flow [2023-08-30 08:30:35,944 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 08:30:35,944 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 5 predicate places. [2023-08-30 08:30:35,944 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 359 flow [2023-08-30 08:30:35,944 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 08:30:35,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:35,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:35,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 08:30:35,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:30:35,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1549207263, now seen corresponding path program 1 times [2023-08-30 08:30:35,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:35,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355097738] [2023-08-30 08:30:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:35,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:35,970 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 08:30:35,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:35,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355097738] [2023-08-30 08:30:35,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355097738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:35,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:35,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:30:35,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524302108] [2023-08-30 08:30:35,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:35,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:35,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:35,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:35,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:36,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 578 [2023-08-30 08:30:36,016 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 08:30:36,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:36,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 578 [2023-08-30 08:30:36,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:51,785 INFO L130 PetriNetUnfolder]: 168734/238074 cut-off events. [2023-08-30 08:30:51,785 INFO L131 PetriNetUnfolder]: For 30640/34486 co-relation queries the response was YES. [2023-08-30 08:30:52,380 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 08:30:53,207 INFO L137 encePairwiseOnDemand]: 553/578 looper letters, 129 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-08-30 08:30:53,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 175 transitions, 717 flow [2023-08-30 08:30:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:30:53,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:30:53,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-08-30 08:30:53,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467128027681661 [2023-08-30 08:30:53,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-08-30 08:30:53,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-08-30 08:30:53,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:53,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-08-30 08:30:53,210 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 08:30:53,211 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 08:30:53,211 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 08:30:53,211 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 359 flow. Second operand 3 states and 948 transitions. [2023-08-30 08:30:53,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 175 transitions, 717 flow [2023-08-30 08:30:53,231 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 08:30:53,232 INFO L231 Difference]: Finished difference. Result has 138 places, 146 transitions, 425 flow [2023-08-30 08:30:53,233 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 08:30:53,233 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 8 predicate places. [2023-08-30 08:30:53,233 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 146 transitions, 425 flow [2023-08-30 08:30:53,233 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 08:30:53,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:53,234 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 08:30:53,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 08:30:53,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:30:53,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash 928305410, now seen corresponding path program 1 times [2023-08-30 08:30:53,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253015906] [2023-08-30 08:30:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:53,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:53,275 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 08:30:53,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:53,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253015906] [2023-08-30 08:30:53,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253015906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:53,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:53,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:30:53,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239247075] [2023-08-30 08:30:53,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:30:53,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:30:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:30:53,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 578 [2023-08-30 08:30:53,369 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 08:30:53,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:53,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 578 [2023-08-30 08:30:53,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:18,023 INFO L130 PetriNetUnfolder]: 245412/346044 cut-off events. [2023-08-30 08:31:18,023 INFO L131 PetriNetUnfolder]: For 79160/104150 co-relation queries the response was YES. [2023-08-30 08:31:19,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772224 conditions, 346044 events. 245412/346044 cut-off events. For 79160/104150 co-relation queries the response was YES. Maximal size of possible extension queue 14037. Compared 2979735 event pairs, 91900 based on Foata normal form. 3391/279911 useless extension candidates. Maximal degree in co-relation 622234. Up to 228538 conditions per place. [2023-08-30 08:31:20,505 INFO L137 encePairwiseOnDemand]: 567/578 looper letters, 292 selfloop transitions, 10 changer transitions 0/343 dead transitions. [2023-08-30 08:31:20,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 343 transitions, 1557 flow [2023-08-30 08:31:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:31:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:31:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1855 transitions. [2023-08-30 08:31:20,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348904267589388 [2023-08-30 08:31:20,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1855 transitions. [2023-08-30 08:31:20,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1855 transitions. [2023-08-30 08:31:20,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:20,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1855 transitions. [2023-08-30 08:31:20,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 309.1666666666667) internal successors, (1855), 6 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:20,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:20,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:20,511 INFO L175 Difference]: Start difference. First operand has 138 places, 146 transitions, 425 flow. Second operand 6 states and 1855 transitions. [2023-08-30 08:31:20,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 343 transitions, 1557 flow [2023-08-30 08:31:20,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 343 transitions, 1551 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:31:20,579 INFO L231 Difference]: Finished difference. Result has 145 places, 152 transitions, 483 flow [2023-08-30 08:31:20,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=483, PETRI_PLACES=145, PETRI_TRANSITIONS=152} [2023-08-30 08:31:20,580 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 15 predicate places. [2023-08-30 08:31:20,580 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 152 transitions, 483 flow [2023-08-30 08:31:20,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 261.6) internal successors, (1308), 5 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:20,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:20,580 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 08:31:20,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 08:31:20,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:31:20,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1287301109, now seen corresponding path program 1 times [2023-08-30 08:31:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:20,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794146800] [2023-08-30 08:31:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:20,630 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 08:31:20,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794146800] [2023-08-30 08:31:20,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794146800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:20,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:20,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:31:20,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64900834] [2023-08-30 08:31:20,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:31:20,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:31:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:31:20,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 578 [2023-08-30 08:31:20,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 152 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:20,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:20,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 578 [2023-08-30 08:31:20,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand