./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.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/goblint-regression/28-race_reach_07-cond_racing2.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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --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 09:54:27,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:54:27,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:54:27,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:54:27,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:54:27,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:54:27,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:54:27,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:54:27,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:54:27,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:54:27,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:54:27,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:54:27,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:54:27,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:54:27,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:54:27,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:54:27,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:54:27,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:54:27,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:54:27,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:54:27,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:54:27,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:54:27,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:54:27,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:54:27,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:54:27,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:54:27,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:54:27,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:54:27,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:54:27,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:54:27,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:54:27,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:54:27,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:54:27,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:54:27,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:54:27,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:54:27,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:54:27,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:54:27,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:54:27,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:54:27,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:54:27,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:54:27,357 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:54:27,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:54:27,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:54:27,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:54:27,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:54:27,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:54:27,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:54:27,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:54:27,360 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:54:27,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:54:27,361 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:54:27,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:54:27,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:54:27,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:54:27,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:54:27,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:54:27,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:54:27,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:54:27,362 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:54:27,363 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:54:27,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:54:27,363 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:54:27,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:54:27,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:54:27,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:54:27,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:54:27,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:54:27,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:54:27,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:54:27,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:54:27,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:54:27,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:54:27,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:54:27,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:54:27,366 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:54:27,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:54:27,366 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:54:27,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:54:27,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:54:27,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:54:27,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:54:27,667 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:54:27,667 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:54:27,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-30 09:54:28,725 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:54:29,045 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:54:29,046 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-30 09:54:29,063 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfd4f06c/7a1f61d8921948d5ad2e247f442e0c37/FLAGa72cadac2 [2023-08-30 09:54:29,083 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfd4f06c/7a1f61d8921948d5ad2e247f442e0c37 [2023-08-30 09:54:29,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:54:29,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:54:29,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:54:29,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:54:29,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:54:29,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230ff56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29, skipping insertion in model container [2023-08-30 09:54:29,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:54:29,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:54:29,520 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2023-08-30 09:54:29,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:54:29,570 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:54:29,606 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2023-08-30 09:54:29,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:54:29,685 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:54:29,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29 WrapperNode [2023-08-30 09:54:29,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:54:29,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:54:29,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:54:29,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:54:29,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,738 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-08-30 09:54:29,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:54:29,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:54:29,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:54:29,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:54:29,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:54:29,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:54:29,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:54:29,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:54:29,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (1/1) ... [2023-08-30 09:54:29,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:54:29,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:29,790 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 09:54:29,813 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 09:54:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:54:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:54:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 09:54:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:54:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:54:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:54:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 09:54:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 09:54:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:54:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:54:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:54:29,831 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 09:54:30,003 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:54:30,011 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:54:30,191 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:54:30,197 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:54:30,209 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 09:54:30,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:54:30 BoogieIcfgContainer [2023-08-30 09:54:30,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:54:30,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:54:30,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:54:30,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:54:30,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:54:29" (1/3) ... [2023-08-30 09:54:30,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:54:30, skipping insertion in model container [2023-08-30 09:54:30,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:54:29" (2/3) ... [2023-08-30 09:54:30,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:54:30, skipping insertion in model container [2023-08-30 09:54:30,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:54:30" (3/3) ... [2023-08-30 09:54:30,219 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-08-30 09:54:30,226 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:54:30,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:54:30,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 09:54:30,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:54:30,288 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 09:54:30,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 140 transitions, 288 flow [2023-08-30 09:54:30,418 INFO L130 PetriNetUnfolder]: 23/185 cut-off events. [2023-08-30 09:54:30,419 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:54:30,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 23/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 437 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-30 09:54:30,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 140 transitions, 288 flow [2023-08-30 09:54:30,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 137 transitions, 282 flow [2023-08-30 09:54:30,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:30,448 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 137 transitions, 282 flow [2023-08-30 09:54:30,451 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 137 transitions, 282 flow [2023-08-30 09:54:30,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 137 transitions, 282 flow [2023-08-30 09:54:30,495 INFO L130 PetriNetUnfolder]: 22/182 cut-off events. [2023-08-30 09:54:30,496 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:54:30,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 22/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 434 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-30 09:54:30,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 3960 [2023-08-30 09:54:33,990 INFO L134 LiptonReduction]: Checked pairs total: 6163 [2023-08-30 09:54:33,990 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-30 09:54:34,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:54:34,006 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;@588aef5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:54:34,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-30 09:54:34,008 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 09:54:34,008 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:34,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:34,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 09:54:34,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 09:54:34,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash 17311, now seen corresponding path program 1 times [2023-08-30 09:54:34,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:34,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730371688] [2023-08-30 09:54:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:34,238 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 09:54:34,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730371688] [2023-08-30 09:54:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730371688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:34,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:34,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:34,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977552779] [2023-08-30 09:54:34,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:34,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:34,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:34,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 269 [2023-08-30 09:54:34,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:34,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:34,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 269 [2023-08-30 09:54:34,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:34,412 INFO L130 PetriNetUnfolder]: 157/334 cut-off events. [2023-08-30 09:54:34,412 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:54:34,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 334 events. 157/334 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1430 event pairs, 121 based on Foata normal form. 13/229 useless extension candidates. Maximal degree in co-relation 651. Up to 317 conditions per place. [2023-08-30 09:54:34,415 INFO L137 encePairwiseOnDemand]: 252/269 looper letters, 41 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-30 09:54:34,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 184 flow [2023-08-30 09:54:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-08-30 09:54:34,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328376703841388 [2023-08-30 09:54:34,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-08-30 09:54:34,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-08-30 09:54:34,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:34,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-08-30 09:54:34,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:34,438 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 09:54:34,439 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 09:54:34,440 INFO L175 Difference]: Start difference. First operand has 37 places, 44 transitions, 96 flow. Second operand 3 states and 430 transitions. [2023-08-30 09:54:34,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 184 flow [2023-08-30 09:54:34,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:54:34,445 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2023-08-30 09:54:34,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-08-30 09:54:34,449 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-30 09:54:34,449 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2023-08-30 09:54:34,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:34,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:34,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 09:54:34,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:54:34,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 09:54:34,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:34,451 INFO L85 PathProgramCache]: Analyzing trace with hash 514932147, now seen corresponding path program 1 times [2023-08-30 09:54:34,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:34,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542889916] [2023-08-30 09:54:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:34,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:34,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542889916] [2023-08-30 09:54:34,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542889916] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:54:34,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403361703] [2023-08-30 09:54:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:34,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:34,529 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 09:54:34,531 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 09:54:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:34,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:54:34,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:54:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:34,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:54:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:34,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403361703] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:54:34,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:54:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 09:54:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284820437] [2023-08-30 09:54:34,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:54:34,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:34,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 269 [2023-08-30 09:54:34,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:34,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:34,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 269 [2023-08-30 09:54:34,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:34,708 INFO L130 PetriNetUnfolder]: 24/68 cut-off events. [2023-08-30 09:54:34,708 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 09:54:34,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 68 events. 24/68 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 162 event pairs, 11 based on Foata normal form. 13/69 useless extension candidates. Maximal degree in co-relation 151. Up to 50 conditions per place. [2023-08-30 09:54:34,709 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 19 selfloop transitions, 2 changer transitions 8/31 dead transitions. [2023-08-30 09:54:34,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 131 flow [2023-08-30 09:54:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:54:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:54:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 517 transitions. [2023-08-30 09:54:34,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804832713754647 [2023-08-30 09:54:34,713 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 517 transitions. [2023-08-30 09:54:34,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 517 transitions. [2023-08-30 09:54:34,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:34,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 517 transitions. [2023-08-30 09:54:34,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:34,718 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 09:54:34,727 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 09:54:34,727 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 4 states and 517 transitions. [2023-08-30 09:54:34,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 131 flow [2023-08-30 09:54:34,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 125 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:54:34,728 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 37 flow [2023-08-30 09:54:34,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-08-30 09:54:34,729 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -13 predicate places. [2023-08-30 09:54:34,729 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 37 flow [2023-08-30 09:54:34,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:34,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:34,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:54:34,751 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 09:54:34,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:34,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 09:54:34,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:34,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1216992516, now seen corresponding path program 1 times [2023-08-30 09:54:34,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:34,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483013268] [2023-08-30 09:54:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:34,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:35,061 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 09:54:35,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:35,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483013268] [2023-08-30 09:54:35,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483013268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:35,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:35,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945713410] [2023-08-30 09:54:35,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:35,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:35,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 269 [2023-08-30 09:54:35,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:35,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:35,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 269 [2023-08-30 09:54:35,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:35,101 INFO L130 PetriNetUnfolder]: 12/39 cut-off events. [2023-08-30 09:54:35,101 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:54:35,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 39 events. 12/39 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 4 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 72. Up to 21 conditions per place. [2023-08-30 09:54:35,103 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 10 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-08-30 09:54:35,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 63 flow [2023-08-30 09:54:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-08-30 09:54:35,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745972738537794 [2023-08-30 09:54:35,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-08-30 09:54:35,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-08-30 09:54:35,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:35,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-08-30 09:54:35,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:35,112 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 09:54:35,113 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 09:54:35,113 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 37 flow. Second operand 3 states and 383 transitions. [2023-08-30 09:54:35,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 63 flow [2023-08-30 09:54:35,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 59 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:35,114 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 34 flow [2023-08-30 09:54:35,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-30 09:54:35,115 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -19 predicate places. [2023-08-30 09:54:35,117 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 34 flow [2023-08-30 09:54:35,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:35,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:35,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:35,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 09:54:35,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 09:54:35,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:35,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1606378714, now seen corresponding path program 1 times [2023-08-30 09:54:35,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:35,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766802705] [2023-08-30 09:54:35,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:35,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:35,218 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 09:54:35,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:35,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766802705] [2023-08-30 09:54:35,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766802705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:35,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:35,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:54:35,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064055674] [2023-08-30 09:54:35,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:35,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:54:35,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:54:35,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 09:54:35,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 269 [2023-08-30 09:54:35,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:35,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:35,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 269 [2023-08-30 09:54:35,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:35,263 INFO L130 PetriNetUnfolder]: 10/34 cut-off events. [2023-08-30 09:54:35,263 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:35,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 34 events. 10/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 4 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 66. Up to 15 conditions per place. [2023-08-30 09:54:35,263 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 9 selfloop transitions, 2 changer transitions 0/13 dead transitions. [2023-08-30 09:54:35,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 13 transitions, 59 flow [2023-08-30 09:54:35,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:54:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:54:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2023-08-30 09:54:35,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684014869888476 [2023-08-30 09:54:35,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 504 transitions. [2023-08-30 09:54:35,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 504 transitions. [2023-08-30 09:54:35,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:35,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 504 transitions. [2023-08-30 09:54:35,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:35,270 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 09:54:35,270 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 09:54:35,270 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 34 flow. Second operand 4 states and 504 transitions. [2023-08-30 09:54:35,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 13 transitions, 59 flow [2023-08-30 09:54:35,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 55 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:35,272 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 32 flow [2023-08-30 09:54:35,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-08-30 09:54:35,273 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -19 predicate places. [2023-08-30 09:54:35,273 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 32 flow [2023-08-30 09:54:35,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:35,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:35,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:35,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 09:54:35,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 09:54:35,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:35,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1606378724, now seen corresponding path program 1 times [2023-08-30 09:54:35,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:35,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562325022] [2023-08-30 09:54:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:35,393 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 09:54:35,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:35,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562325022] [2023-08-30 09:54:35,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562325022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:35,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:35,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:54:35,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972140100] [2023-08-30 09:54:35,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:35,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 09:54:35,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:35,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 09:54:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 09:54:35,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 269 [2023-08-30 09:54:35,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 32 flow. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:35,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:35,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 269 [2023-08-30 09:54:35,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:35,430 INFO L130 PetriNetUnfolder]: 8/29 cut-off events. [2023-08-30 09:54:35,431 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:35,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 29 events. 8/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 4 based on Foata normal form. 3/32 useless extension candidates. Maximal degree in co-relation 55. Up to 15 conditions per place. [2023-08-30 09:54:35,431 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-30 09:54:35,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 55 flow [2023-08-30 09:54:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 09:54:35,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 09:54:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2023-08-30 09:54:35,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674721189591078 [2023-08-30 09:54:35,435 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2023-08-30 09:54:35,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2023-08-30 09:54:35,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:35,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2023-08-30 09:54:35,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:35,439 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 09:54:35,440 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 09:54:35,440 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 32 flow. Second operand 4 states and 503 transitions. [2023-08-30 09:54:35,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 55 flow [2023-08-30 09:54:35,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:35,441 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-30 09:54:35,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-30 09:54:35,444 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -19 predicate places. [2023-08-30 09:54:35,444 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-30 09:54:35,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:35,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-08-30 09:54:35,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-30 09:54:35,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-30 09:54:35,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-30 09:54:35,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-30 09:54:35,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-30 09:54:35,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-30 09:54:35,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-30 09:54:35,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-30 09:54:35,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-30 09:54:35,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-30 09:54:35,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-30 09:54:35,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-30 09:54:35,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-30 09:54:35,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 09:54:35,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 09:54:35,461 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 09:54:35,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 140 transitions, 288 flow [2023-08-30 09:54:35,494 INFO L130 PetriNetUnfolder]: 23/185 cut-off events. [2023-08-30 09:54:35,494 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 09:54:35,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 23/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 437 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-30 09:54:35,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 140 transitions, 288 flow [2023-08-30 09:54:35,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 131 transitions, 267 flow [2023-08-30 09:54:35,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:35,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 131 transitions, 267 flow [2023-08-30 09:54:35,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 131 transitions, 267 flow [2023-08-30 09:54:35,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 131 transitions, 267 flow [2023-08-30 09:54:35,521 INFO L130 PetriNetUnfolder]: 22/176 cut-off events. [2023-08-30 09:54:35,522 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:35,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 22/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 424 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-30 09:54:35,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 3960 [2023-08-30 09:54:38,720 INFO L134 LiptonReduction]: Checked pairs total: 6026 [2023-08-30 09:54:38,721 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-30 09:54:38,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 09:54:38,723 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;@588aef5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:54:38,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 09:54:38,726 INFO L130 PetriNetUnfolder]: 4/32 cut-off events. [2023-08-30 09:54:38,726 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:38,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:38,726 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 09:54:38,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 09:54:38,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:38,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1756772554, now seen corresponding path program 1 times [2023-08-30 09:54:38,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:38,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302074588] [2023-08-30 09:54:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:38,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:54:38,741 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 09:54:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:54:38,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 09:54:38,760 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 09:54:38,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 09:54:38,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 09:54:38,766 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 09:54:38,767 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 09:54:38,767 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 09:54:38,768 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 09:54:38,783 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 09:54:38,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:38,809 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2023-08-30 09:54:38,810 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:54:38,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 906 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2023-08-30 09:54:38,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:38,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:38,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:38,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:38,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:38,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:38,838 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2023-08-30 09:54:38,838 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:54:38,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 906 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2023-08-30 09:54:38,846 INFO L119 LiptonReduction]: Number of co-enabled transitions 11880 [2023-08-30 09:54:41,873 INFO L134 LiptonReduction]: Checked pairs total: 27881 [2023-08-30 09:54:41,873 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-30 09:54:41,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:54:41,875 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;@588aef5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:54:41,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 09:54:41,877 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-30 09:54:41,877 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:54:41,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:41,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 09:54:41,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:41,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:41,878 INFO L85 PathProgramCache]: Analyzing trace with hash 32990, now seen corresponding path program 1 times [2023-08-30 09:54:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:41,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293543751] [2023-08-30 09:54:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:41,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:41,896 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 09:54:41,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:41,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293543751] [2023-08-30 09:54:41,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293543751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:41,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:41,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:41,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593357085] [2023-08-30 09:54:41,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:41,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:41,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:41,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:41,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:41,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 09:54:41,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 72 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:41,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:41,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 09:54:41,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:42,680 INFO L130 PetriNetUnfolder]: 6640/10611 cut-off events. [2023-08-30 09:54:42,680 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 09:54:42,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21077 conditions, 10611 events. 6640/10611 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 67877 event pairs, 3024 based on Foata normal form. 472/7452 useless extension candidates. Maximal degree in co-relation 2262. Up to 10337 conditions per place. [2023-08-30 09:54:42,750 INFO L137 encePairwiseOnDemand]: 302/325 looper letters, 65 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 09:54:42,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 296 flow [2023-08-30 09:54:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-30 09:54:42,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2023-08-30 09:54:42,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-30 09:54:42,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-30 09:54:42,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:42,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-30 09:54:42,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:42,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:42,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:42,757 INFO L175 Difference]: Start difference. First operand has 59 places, 72 transitions, 162 flow. Second operand 3 states and 550 transitions. [2023-08-30 09:54:42,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 296 flow [2023-08-30 09:54:42,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:54:42,761 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 152 flow [2023-08-30 09:54:42,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 09:54:42,762 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2023-08-30 09:54:42,763 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 152 flow [2023-08-30 09:54:42,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:42,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:42,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:54:42,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 09:54:42,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:42,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash 390386388, now seen corresponding path program 1 times [2023-08-30 09:54:42,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:42,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932960156] [2023-08-30 09:54:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:42,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:42,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932960156] [2023-08-30 09:54:42,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932960156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:54:42,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245589026] [2023-08-30 09:54:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:42,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:54:42,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:54:42,805 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 09:54:42,829 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 09:54:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:42,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:54:42,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:54:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:42,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:54:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:42,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245589026] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:54:42,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:54:42,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 09:54:42,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006781707] [2023-08-30 09:54:42,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:54:42,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:42,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:42,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 325 [2023-08-30 09:54:42,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:42,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:42,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 325 [2023-08-30 09:54:42,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:43,244 INFO L130 PetriNetUnfolder]: 1498/2702 cut-off events. [2023-08-30 09:54:43,245 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-08-30 09:54:43,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6131 conditions, 2702 events. 1498/2702 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16216 event pairs, 0 based on Foata normal form. 240/2225 useless extension candidates. Maximal degree in co-relation 658. Up to 1290 conditions per place. [2023-08-30 09:54:43,263 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 103 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-08-30 09:54:43,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 111 transitions, 458 flow [2023-08-30 09:54:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:54:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:54:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1022 transitions. [2023-08-30 09:54:43,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241025641025641 [2023-08-30 09:54:43,267 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1022 transitions. [2023-08-30 09:54:43,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1022 transitions. [2023-08-30 09:54:43,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:43,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1022 transitions. [2023-08-30 09:54:43,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,273 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,274 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 152 flow. Second operand 6 states and 1022 transitions. [2023-08-30 09:54:43,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 111 transitions, 458 flow [2023-08-30 09:54:43,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 111 transitions, 454 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 09:54:43,281 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 104 flow [2023-08-30 09:54:43,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-30 09:54:43,282 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2023-08-30 09:54:43,282 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 104 flow [2023-08-30 09:54:43,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:43,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:43,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 09:54:43,491 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,SelfDestructingSolverStorable7 [2023-08-30 09:54:43,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:43,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash -775761742, now seen corresponding path program 1 times [2023-08-30 09:54:43,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:43,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053983828] [2023-08-30 09:54:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:43,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:43,527 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 09:54:43,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053983828] [2023-08-30 09:54:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053983828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:43,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:43,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:54:43,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277224436] [2023-08-30 09:54:43,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:43,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:43,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:43,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 325 [2023-08-30 09:54:43,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 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 09:54:43,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:43,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 325 [2023-08-30 09:54:43,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:43,753 INFO L130 PetriNetUnfolder]: 1352/2239 cut-off events. [2023-08-30 09:54:43,753 INFO L131 PetriNetUnfolder]: For 691/691 co-relation queries the response was YES. [2023-08-30 09:54:43,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5350 conditions, 2239 events. 1352/2239 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12221 event pairs, 506 based on Foata normal form. 0/1644 useless extension candidates. Maximal degree in co-relation 4441. Up to 2046 conditions per place. [2023-08-30 09:54:43,765 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 45 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-30 09:54:43,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 243 flow [2023-08-30 09:54:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:43,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-30 09:54:43,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158974358974359 [2023-08-30 09:54:43,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-30 09:54:43,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-30 09:54:43,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:43,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-30 09:54:43,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,770 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 104 flow. Second operand 3 states and 503 transitions. [2023-08-30 09:54:43,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 243 flow [2023-08-30 09:54:43,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 228 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 09:54:43,773 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 120 flow [2023-08-30 09:54:43,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-30 09:54:43,775 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2023-08-30 09:54:43,777 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 120 flow [2023-08-30 09:54:43,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 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 09:54:43,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:43,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:54:43,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 09:54:43,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:43,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash -770932426, now seen corresponding path program 1 times [2023-08-30 09:54:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241215913] [2023-08-30 09:54:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:54:43,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241215913] [2023-08-30 09:54:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241215913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:43,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:43,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:54:43,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073762010] [2023-08-30 09:54:43,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:43,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:54:43,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:43,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:54:43,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:54:43,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 09:54:43,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:43,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 09:54:43,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:43,950 INFO L130 PetriNetUnfolder]: 972/1650 cut-off events. [2023-08-30 09:54:43,951 INFO L131 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2023-08-30 09:54:43,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 1650 events. 972/1650 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8308 event pairs, 945 based on Foata normal form. 0/1407 useless extension candidates. Maximal degree in co-relation 3082. Up to 1628 conditions per place. [2023-08-30 09:54:43,957 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 35 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 09:54:43,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 188 flow [2023-08-30 09:54:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:54:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:54:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 09:54:43,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2023-08-30 09:54:43,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 09:54:43,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 09:54:43,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:43,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 09:54:43,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,963 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 120 flow. Second operand 3 states and 490 transitions. [2023-08-30 09:54:43,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 188 flow [2023-08-30 09:54:43,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:54:43,964 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 115 flow [2023-08-30 09:54:43,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-30 09:54:43,965 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -10 predicate places. [2023-08-30 09:54:43,965 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 115 flow [2023-08-30 09:54:43,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:43,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:43,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:43,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 09:54:43,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:43,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:43,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1621918840, now seen corresponding path program 1 times [2023-08-30 09:54:43,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:43,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710872405] [2023-08-30 09:54:43,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:43,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:44,017 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 09:54:44,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:44,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710872405] [2023-08-30 09:54:44,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710872405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:44,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:44,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:54:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317407603] [2023-08-30 09:54:44,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:44,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:54:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:54:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:54:44,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 09:54:44,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:44,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 09:54:44,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:44,291 INFO L130 PetriNetUnfolder]: 1196/2051 cut-off events. [2023-08-30 09:54:44,292 INFO L131 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2023-08-30 09:54:44,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 2051 events. 1196/2051 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11419 event pairs, 193 based on Foata normal form. 0/1805 useless extension candidates. Maximal degree in co-relation 4589. Up to 1096 conditions per place. [2023-08-30 09:54:44,299 INFO L137 encePairwiseOnDemand]: 310/325 looper letters, 93 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2023-08-30 09:54:44,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 116 transitions, 547 flow [2023-08-30 09:54:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:54:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:54:44,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2023-08-30 09:54:44,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501978021978022 [2023-08-30 09:54:44,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2023-08-30 09:54:44,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2023-08-30 09:54:44,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:44,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2023-08-30 09:54:44,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,309 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,309 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 115 flow. Second operand 7 states and 1142 transitions. [2023-08-30 09:54:44,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 116 transitions, 547 flow [2023-08-30 09:54:44,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 116 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:54:44,313 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 273 flow [2023-08-30 09:54:44,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-08-30 09:54:44,314 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2023-08-30 09:54:44,315 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 273 flow [2023-08-30 09:54:44,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:44,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 09:54:44,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:44,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1621918781, now seen corresponding path program 1 times [2023-08-30 09:54:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:44,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707490584] [2023-08-30 09:54:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:44,380 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 09:54:44,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:44,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707490584] [2023-08-30 09:54:44,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707490584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:44,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:44,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:54:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967753390] [2023-08-30 09:54:44,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:44,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:54:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:54:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:54:44,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 09:54:44,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:44,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 09:54:44,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:44,688 INFO L130 PetriNetUnfolder]: 1118/1961 cut-off events. [2023-08-30 09:54:44,688 INFO L131 PetriNetUnfolder]: For 1403/1403 co-relation queries the response was YES. [2023-08-30 09:54:44,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5454 conditions, 1961 events. 1118/1961 cut-off events. For 1403/1403 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11085 event pairs, 175 based on Foata normal form. 78/2039 useless extension candidates. Maximal degree in co-relation 5437. Up to 1115 conditions per place. [2023-08-30 09:54:44,697 INFO L137 encePairwiseOnDemand]: 310/325 looper letters, 94 selfloop transitions, 24 changer transitions 2/124 dead transitions. [2023-08-30 09:54:44,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 747 flow [2023-08-30 09:54:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:54:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:54:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1139 transitions. [2023-08-30 09:54:44,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006593406593407 [2023-08-30 09:54:44,701 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1139 transitions. [2023-08-30 09:54:44,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1139 transitions. [2023-08-30 09:54:44,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:44,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1139 transitions. [2023-08-30 09:54:44,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.71428571428572) internal successors, (1139), 7 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,709 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,709 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 273 flow. Second operand 7 states and 1139 transitions. [2023-08-30 09:54:44,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 747 flow [2023-08-30 09:54:44,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 124 transitions, 739 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 09:54:44,717 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 459 flow [2023-08-30 09:54:44,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-08-30 09:54:44,719 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2023-08-30 09:54:44,719 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 459 flow [2023-08-30 09:54:44,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:44,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:44,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 09:54:44,721 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:44,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:44,721 INFO L85 PathProgramCache]: Analyzing trace with hash -896580361, now seen corresponding path program 1 times [2023-08-30 09:54:44,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:44,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993931841] [2023-08-30 09:54:44,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:44,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:44,794 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 09:54:44,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:44,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993931841] [2023-08-30 09:54:44,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993931841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:44,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:44,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:54:44,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645103823] [2023-08-30 09:54:44,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:44,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:54:44,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:54:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:54:44,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 09:54:44,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 459 flow. Second operand has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:44,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:44,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 09:54:44,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:45,103 INFO L130 PetriNetUnfolder]: 1237/2122 cut-off events. [2023-08-30 09:54:45,104 INFO L131 PetriNetUnfolder]: For 3615/3615 co-relation queries the response was YES. [2023-08-30 09:54:45,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6709 conditions, 2122 events. 1237/2122 cut-off events. For 3615/3615 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11823 event pairs, 259 based on Foata normal form. 60/2182 useless extension candidates. Maximal degree in co-relation 6687. Up to 1340 conditions per place. [2023-08-30 09:54:45,117 INFO L137 encePairwiseOnDemand]: 312/325 looper letters, 88 selfloop transitions, 22 changer transitions 1/115 dead transitions. [2023-08-30 09:54:45,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 115 transitions, 892 flow [2023-08-30 09:54:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:54:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:54:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 965 transitions. [2023-08-30 09:54:45,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2023-08-30 09:54:45,121 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 965 transitions. [2023-08-30 09:54:45,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 965 transitions. [2023-08-30 09:54:45,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:45,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 965 transitions. [2023-08-30 09:54:45,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,126 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,126 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 459 flow. Second operand 6 states and 965 transitions. [2023-08-30 09:54:45,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 115 transitions, 892 flow [2023-08-30 09:54:45,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 115 transitions, 875 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:45,143 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 635 flow [2023-08-30 09:54:45,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=635, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2023-08-30 09:54:45,144 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 16 predicate places. [2023-08-30 09:54:45,144 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 635 flow [2023-08-30 09:54:45,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:45,145 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:45,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 09:54:45,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:45,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:45,146 INFO L85 PathProgramCache]: Analyzing trace with hash -896580390, now seen corresponding path program 1 times [2023-08-30 09:54:45,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:45,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725996829] [2023-08-30 09:54:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:45,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:45,199 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 09:54:45,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:45,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725996829] [2023-08-30 09:54:45,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725996829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:45,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:45,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:54:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864273272] [2023-08-30 09:54:45,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:45,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:54:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:54:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:54:45,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 09:54:45,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 635 flow. Second operand has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:45,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 09:54:45,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:45,474 INFO L130 PetriNetUnfolder]: 1073/1856 cut-off events. [2023-08-30 09:54:45,474 INFO L131 PetriNetUnfolder]: For 4880/4880 co-relation queries the response was YES. [2023-08-30 09:54:45,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6199 conditions, 1856 events. 1073/1856 cut-off events. For 4880/4880 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10067 event pairs, 223 based on Foata normal form. 60/1916 useless extension candidates. Maximal degree in co-relation 6172. Up to 1181 conditions per place. [2023-08-30 09:54:45,483 INFO L137 encePairwiseOnDemand]: 312/325 looper letters, 80 selfloop transitions, 19 changer transitions 4/107 dead transitions. [2023-08-30 09:54:45,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 107 transitions, 881 flow [2023-08-30 09:54:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 09:54:45,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 09:54:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 964 transitions. [2023-08-30 09:54:45,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49435897435897436 [2023-08-30 09:54:45,486 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 964 transitions. [2023-08-30 09:54:45,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 964 transitions. [2023-08-30 09:54:45,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:45,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 964 transitions. [2023-08-30 09:54:45,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,492 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 635 flow. Second operand 6 states and 964 transitions. [2023-08-30 09:54:45,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 107 transitions, 881 flow [2023-08-30 09:54:45,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 107 transitions, 855 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 09:54:45,518 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 558 flow [2023-08-30 09:54:45,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2023-08-30 09:54:45,519 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 19 predicate places. [2023-08-30 09:54:45,519 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 558 flow [2023-08-30 09:54:45,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:45,520 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:45,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 09:54:45,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:45,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash -773101430, now seen corresponding path program 1 times [2023-08-30 09:54:45,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:45,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670732965] [2023-08-30 09:54:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:45,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:45,593 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 09:54:45,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:45,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670732965] [2023-08-30 09:54:45,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670732965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:45,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:45,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959934228] [2023-08-30 09:54:45,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:45,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:45,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2023-08-30 09:54:45,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:45,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:45,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2023-08-30 09:54:45,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:45,999 INFO L130 PetriNetUnfolder]: 1156/2011 cut-off events. [2023-08-30 09:54:45,999 INFO L131 PetriNetUnfolder]: For 4845/4845 co-relation queries the response was YES. [2023-08-30 09:54:46,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6750 conditions, 2011 events. 1156/2011 cut-off events. For 4845/4845 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11253 event pairs, 133 based on Foata normal form. 18/2029 useless extension candidates. Maximal degree in co-relation 6723. Up to 914 conditions per place. [2023-08-30 09:54:46,010 INFO L137 encePairwiseOnDemand]: 311/325 looper letters, 112 selfloop transitions, 36 changer transitions 8/160 dead transitions. [2023-08-30 09:54:46,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 1246 flow [2023-08-30 09:54:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:54:46,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:54:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1563 transitions. [2023-08-30 09:54:46,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809230769230769 [2023-08-30 09:54:46,015 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1563 transitions. [2023-08-30 09:54:46,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1563 transitions. [2023-08-30 09:54:46,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:46,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1563 transitions. [2023-08-30 09:54:46,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 156.3) internal successors, (1563), 10 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,023 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,023 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 558 flow. Second operand 10 states and 1563 transitions. [2023-08-30 09:54:46,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 1246 flow [2023-08-30 09:54:46,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 160 transitions, 1233 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 09:54:46,037 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 737 flow [2023-08-30 09:54:46,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=737, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2023-08-30 09:54:46,038 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 27 predicate places. [2023-08-30 09:54:46,038 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 737 flow [2023-08-30 09:54:46,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:46,038 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:46,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 09:54:46,039 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:46,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:46,039 INFO L85 PathProgramCache]: Analyzing trace with hash 881191682, now seen corresponding path program 1 times [2023-08-30 09:54:46,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:46,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639242054] [2023-08-30 09:54:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:46,105 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 09:54:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:46,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639242054] [2023-08-30 09:54:46,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639242054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:46,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:46,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:46,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445782386] [2023-08-30 09:54:46,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:46,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:46,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:46,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2023-08-30 09:54:46,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 737 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:46,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2023-08-30 09:54:46,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:46,491 INFO L130 PetriNetUnfolder]: 1133/2003 cut-off events. [2023-08-30 09:54:46,492 INFO L131 PetriNetUnfolder]: For 6194/6194 co-relation queries the response was YES. [2023-08-30 09:54:46,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 2003 events. 1133/2003 cut-off events. For 6194/6194 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11399 event pairs, 145 based on Foata normal form. 18/2021 useless extension candidates. Maximal degree in co-relation 7162. Up to 922 conditions per place. [2023-08-30 09:54:46,503 INFO L137 encePairwiseOnDemand]: 312/325 looper letters, 115 selfloop transitions, 33 changer transitions 12/164 dead transitions. [2023-08-30 09:54:46,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 164 transitions, 1355 flow [2023-08-30 09:54:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:54:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:54:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1853 transitions. [2023-08-30 09:54:46,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47512820512820514 [2023-08-30 09:54:46,507 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1853 transitions. [2023-08-30 09:54:46,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1853 transitions. [2023-08-30 09:54:46,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:46,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1853 transitions. [2023-08-30 09:54:46,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.41666666666666) internal successors, (1853), 12 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 325.0) internal successors, (4225), 13 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,516 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 325.0) internal successors, (4225), 13 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,516 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 737 flow. Second operand 12 states and 1853 transitions. [2023-08-30 09:54:46,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 164 transitions, 1355 flow [2023-08-30 09:54:46,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 164 transitions, 1291 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 09:54:46,540 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 742 flow [2023-08-30 09:54:46,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2023-08-30 09:54:46,541 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 34 predicate places. [2023-08-30 09:54:46,541 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 742 flow [2023-08-30 09:54:46,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:46,542 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:46,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 09:54:46,542 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:46,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash 879497055, now seen corresponding path program 1 times [2023-08-30 09:54:46,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:46,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472959410] [2023-08-30 09:54:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:46,609 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 09:54:46,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:46,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472959410] [2023-08-30 09:54:46,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472959410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:46,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:46,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540726846] [2023-08-30 09:54:46,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:46,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:46,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:46,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2023-08-30 09:54:46,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 742 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:46,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:46,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2023-08-30 09:54:46,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:47,010 INFO L130 PetriNetUnfolder]: 1199/2096 cut-off events. [2023-08-30 09:54:47,011 INFO L131 PetriNetUnfolder]: For 7412/7412 co-relation queries the response was YES. [2023-08-30 09:54:47,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 2096 events. 1199/2096 cut-off events. For 7412/7412 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12000 event pairs, 142 based on Foata normal form. 36/2132 useless extension candidates. Maximal degree in co-relation 7597. Up to 974 conditions per place. [2023-08-30 09:54:47,022 INFO L137 encePairwiseOnDemand]: 312/325 looper letters, 113 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2023-08-30 09:54:47,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 162 transitions, 1373 flow [2023-08-30 09:54:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 09:54:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 09:54:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2139 transitions. [2023-08-30 09:54:47,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701098901098901 [2023-08-30 09:54:47,026 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2139 transitions. [2023-08-30 09:54:47,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2139 transitions. [2023-08-30 09:54:47,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:47,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2139 transitions. [2023-08-30 09:54:47,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 152.78571428571428) internal successors, (2139), 14 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,043 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,043 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 742 flow. Second operand 14 states and 2139 transitions. [2023-08-30 09:54:47,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 162 transitions, 1373 flow [2023-08-30 09:54:47,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 162 transitions, 1315 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-30 09:54:47,070 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 899 flow [2023-08-30 09:54:47,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=899, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2023-08-30 09:54:47,070 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 42 predicate places. [2023-08-30 09:54:47,070 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 899 flow [2023-08-30 09:54:47,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:47,071 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:47,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 09:54:47,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:47,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1500682284, now seen corresponding path program 1 times [2023-08-30 09:54:47,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:47,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418784947] [2023-08-30 09:54:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:47,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:47,162 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 09:54:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418784947] [2023-08-30 09:54:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418784947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:47,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066788705] [2023-08-30 09:54:47,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:47,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:47,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:47,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:47,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2023-08-30 09:54:47,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 899 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:47,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2023-08-30 09:54:47,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:47,581 INFO L130 PetriNetUnfolder]: 1254/2205 cut-off events. [2023-08-30 09:54:47,582 INFO L131 PetriNetUnfolder]: For 9172/9172 co-relation queries the response was YES. [2023-08-30 09:54:47,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 2205 events. 1254/2205 cut-off events. For 9172/9172 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12877 event pairs, 217 based on Foata normal form. 33/2238 useless extension candidates. Maximal degree in co-relation 8348. Up to 1405 conditions per place. [2023-08-30 09:54:47,597 INFO L137 encePairwiseOnDemand]: 312/325 looper letters, 117 selfloop transitions, 28 changer transitions 6/155 dead transitions. [2023-08-30 09:54:47,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 155 transitions, 1517 flow [2023-08-30 09:54:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:54:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:54:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1542 transitions. [2023-08-30 09:54:47,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47446153846153843 [2023-08-30 09:54:47,601 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1542 transitions. [2023-08-30 09:54:47,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1542 transitions. [2023-08-30 09:54:47,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:47,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1542 transitions. [2023-08-30 09:54:47,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 154.2) internal successors, (1542), 10 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,609 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,609 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 899 flow. Second operand 10 states and 1542 transitions. [2023-08-30 09:54:47,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 155 transitions, 1517 flow [2023-08-30 09:54:47,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 155 transitions, 1410 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-08-30 09:54:47,642 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 993 flow [2023-08-30 09:54:47,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=993, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2023-08-30 09:54:47,642 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 50 predicate places. [2023-08-30 09:54:47,642 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 993 flow [2023-08-30 09:54:47,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:47,643 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:47,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 09:54:47,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:47,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash -773066268, now seen corresponding path program 2 times [2023-08-30 09:54:47,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:47,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208913536] [2023-08-30 09:54:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:47,709 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 09:54:47,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:47,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208913536] [2023-08-30 09:54:47,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208913536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:47,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:47,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:47,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783343816] [2023-08-30 09:54:47,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:47,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:47,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:47,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:47,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2023-08-30 09:54:47,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 993 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:47,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:47,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2023-08-30 09:54:47,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:48,154 INFO L130 PetriNetUnfolder]: 1163/2042 cut-off events. [2023-08-30 09:54:48,154 INFO L131 PetriNetUnfolder]: For 8204/8204 co-relation queries the response was YES. [2023-08-30 09:54:48,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7664 conditions, 2042 events. 1163/2042 cut-off events. For 8204/8204 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11680 event pairs, 223 based on Foata normal form. 36/2078 useless extension candidates. Maximal degree in co-relation 7624. Up to 1175 conditions per place. [2023-08-30 09:54:48,169 INFO L137 encePairwiseOnDemand]: 312/325 looper letters, 106 selfloop transitions, 34 changer transitions 9/153 dead transitions. [2023-08-30 09:54:48,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 153 transitions, 1383 flow [2023-08-30 09:54:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:54:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:54:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1842 transitions. [2023-08-30 09:54:48,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723076923076923 [2023-08-30 09:54:48,172 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1842 transitions. [2023-08-30 09:54:48,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1842 transitions. [2023-08-30 09:54:48,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:48,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1842 transitions. [2023-08-30 09:54:48,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 153.5) internal successors, (1842), 12 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 325.0) internal successors, (4225), 13 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,180 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 325.0) internal successors, (4225), 13 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,181 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 993 flow. Second operand 12 states and 1842 transitions. [2023-08-30 09:54:48,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 153 transitions, 1383 flow [2023-08-30 09:54:48,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 153 transitions, 1262 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-30 09:54:48,219 INFO L231 Difference]: Finished difference. Result has 111 places, 82 transitions, 778 flow [2023-08-30 09:54:48,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=778, PETRI_PLACES=111, PETRI_TRANSITIONS=82} [2023-08-30 09:54:48,219 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 52 predicate places. [2023-08-30 09:54:48,219 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 82 transitions, 778 flow [2023-08-30 09:54:48,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:48,221 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:48,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 09:54:48,221 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:48,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1516806060, now seen corresponding path program 1 times [2023-08-30 09:54:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:48,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435848358] [2023-08-30 09:54:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:48,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:48,294 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 09:54:48,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:48,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435848358] [2023-08-30 09:54:48,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435848358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:48,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:48,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:48,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813392358] [2023-08-30 09:54:48,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:48,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:48,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:48,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:48,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:48,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2023-08-30 09:54:48,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 82 transitions, 778 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:48,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2023-08-30 09:54:48,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:48,636 INFO L130 PetriNetUnfolder]: 1179/2076 cut-off events. [2023-08-30 09:54:48,636 INFO L131 PetriNetUnfolder]: For 7294/7294 co-relation queries the response was YES. [2023-08-30 09:54:48,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7634 conditions, 2076 events. 1179/2076 cut-off events. For 7294/7294 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11983 event pairs, 196 based on Foata normal form. 18/2094 useless extension candidates. Maximal degree in co-relation 7595. Up to 1253 conditions per place. [2023-08-30 09:54:48,650 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 106 selfloop transitions, 27 changer transitions 10/147 dead transitions. [2023-08-30 09:54:48,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 147 transitions, 1404 flow [2023-08-30 09:54:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:54:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:54:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1531 transitions. [2023-08-30 09:54:48,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47107692307692306 [2023-08-30 09:54:48,653 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1531 transitions. [2023-08-30 09:54:48,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1531 transitions. [2023-08-30 09:54:48,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:48,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1531 transitions. [2023-08-30 09:54:48,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 153.1) internal successors, (1531), 10 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,659 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,659 INFO L175 Difference]: Start difference. First operand has 111 places, 82 transitions, 778 flow. Second operand 10 states and 1531 transitions. [2023-08-30 09:54:48,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 147 transitions, 1404 flow [2023-08-30 09:54:48,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 147 transitions, 1360 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-30 09:54:48,689 INFO L231 Difference]: Finished difference. Result has 113 places, 90 transitions, 929 flow [2023-08-30 09:54:48,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=929, PETRI_PLACES=113, PETRI_TRANSITIONS=90} [2023-08-30 09:54:48,690 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 54 predicate places. [2023-08-30 09:54:48,690 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 90 transitions, 929 flow [2023-08-30 09:54:48,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:48,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:48,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 09:54:48,691 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:48,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1500682343, now seen corresponding path program 2 times [2023-08-30 09:54:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:48,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343979965] [2023-08-30 09:54:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:48,793 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 09:54:48,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:48,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343979965] [2023-08-30 09:54:48,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343979965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:48,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:48,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:48,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655973213] [2023-08-30 09:54:48,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:48,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:48,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:48,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2023-08-30 09:54:48,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 90 transitions, 929 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:48,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:48,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2023-08-30 09:54:48,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:49,179 INFO L130 PetriNetUnfolder]: 1103/1928 cut-off events. [2023-08-30 09:54:49,179 INFO L131 PetriNetUnfolder]: For 7250/7250 co-relation queries the response was YES. [2023-08-30 09:54:49,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7144 conditions, 1928 events. 1103/1928 cut-off events. For 7250/7250 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10819 event pairs, 139 based on Foata normal form. 36/1964 useless extension candidates. Maximal degree in co-relation 7105. Up to 841 conditions per place. [2023-08-30 09:54:49,190 INFO L137 encePairwiseOnDemand]: 312/325 looper letters, 103 selfloop transitions, 43 changer transitions 7/157 dead transitions. [2023-08-30 09:54:49,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 157 transitions, 1323 flow [2023-08-30 09:54:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:54:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:54:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1993 transitions. [2023-08-30 09:54:49,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717159763313609 [2023-08-30 09:54:49,193 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1993 transitions. [2023-08-30 09:54:49,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1993 transitions. [2023-08-30 09:54:49,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:49,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1993 transitions. [2023-08-30 09:54:49,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 153.30769230769232) internal successors, (1993), 13 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,201 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,201 INFO L175 Difference]: Start difference. First operand has 113 places, 90 transitions, 929 flow. Second operand 13 states and 1993 transitions. [2023-08-30 09:54:49,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 157 transitions, 1323 flow [2023-08-30 09:54:49,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 157 transitions, 1192 flow, removed 14 selfloop flow, removed 13 redundant places. [2023-08-30 09:54:49,230 INFO L231 Difference]: Finished difference. Result has 111 places, 79 transitions, 732 flow [2023-08-30 09:54:49,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=732, PETRI_PLACES=111, PETRI_TRANSITIONS=79} [2023-08-30 09:54:49,231 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 52 predicate places. [2023-08-30 09:54:49,231 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 79 transitions, 732 flow [2023-08-30 09:54:49,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:49,231 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:49,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 09:54:49,232 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:49,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1516806008, now seen corresponding path program 1 times [2023-08-30 09:54:49,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:49,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108334857] [2023-08-30 09:54:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:49,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:49,295 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 09:54:49,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:49,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108334857] [2023-08-30 09:54:49,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108334857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:49,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:49,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:49,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151788358] [2023-08-30 09:54:49,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:49,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:49,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:49,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:49,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:49,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2023-08-30 09:54:49,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 79 transitions, 732 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:49,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2023-08-30 09:54:49,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:49,610 INFO L130 PetriNetUnfolder]: 992/1739 cut-off events. [2023-08-30 09:54:49,611 INFO L131 PetriNetUnfolder]: For 4682/4682 co-relation queries the response was YES. [2023-08-30 09:54:49,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6386 conditions, 1739 events. 992/1739 cut-off events. For 4682/4682 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9530 event pairs, 199 based on Foata normal form. 18/1757 useless extension candidates. Maximal degree in co-relation 6352. Up to 984 conditions per place. [2023-08-30 09:54:49,619 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 84 selfloop transitions, 17 changer transitions 27/132 dead transitions. [2023-08-30 09:54:49,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 132 transitions, 1172 flow [2023-08-30 09:54:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:54:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:54:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1384 transitions. [2023-08-30 09:54:49,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47316239316239317 [2023-08-30 09:54:49,622 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1384 transitions. [2023-08-30 09:54:49,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1384 transitions. [2023-08-30 09:54:49,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:49,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1384 transitions. [2023-08-30 09:54:49,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.77777777777777) internal successors, (1384), 9 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 325.0) internal successors, (3250), 10 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,627 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 325.0) internal successors, (3250), 10 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,627 INFO L175 Difference]: Start difference. First operand has 111 places, 79 transitions, 732 flow. Second operand 9 states and 1384 transitions. [2023-08-30 09:54:49,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 132 transitions, 1172 flow [2023-08-30 09:54:49,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 1086 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-08-30 09:54:49,644 INFO L231 Difference]: Finished difference. Result has 105 places, 70 transitions, 570 flow [2023-08-30 09:54:49,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=570, PETRI_PLACES=105, PETRI_TRANSITIONS=70} [2023-08-30 09:54:49,645 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 46 predicate places. [2023-08-30 09:54:49,645 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 70 transitions, 570 flow [2023-08-30 09:54:49,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:49,645 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] [2023-08-30 09:54:49,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 09:54:49,646 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:49,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1446185055, now seen corresponding path program 1 times [2023-08-30 09:54:49,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:49,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532032845] [2023-08-30 09:54:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:49,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:49,737 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 09:54:49,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:49,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532032845] [2023-08-30 09:54:49,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532032845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:49,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:49,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:49,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472937962] [2023-08-30 09:54:49,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:49,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:49,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:49,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:49,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:49,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:49,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 70 transitions, 570 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:49,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:49,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:49,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:50,196 INFO L130 PetriNetUnfolder]: 1009/1765 cut-off events. [2023-08-30 09:54:50,197 INFO L131 PetriNetUnfolder]: For 5325/5325 co-relation queries the response was YES. [2023-08-30 09:54:50,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6155 conditions, 1765 events. 1009/1765 cut-off events. For 5325/5325 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9657 event pairs, 166 based on Foata normal form. 18/1783 useless extension candidates. Maximal degree in co-relation 6123. Up to 633 conditions per place. [2023-08-30 09:54:50,205 INFO L137 encePairwiseOnDemand]: 313/325 looper letters, 114 selfloop transitions, 32 changer transitions 13/163 dead transitions. [2023-08-30 09:54:50,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 163 transitions, 1213 flow [2023-08-30 09:54:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 09:54:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 09:54:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2504 transitions. [2023-08-30 09:54:50,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532126696832579 [2023-08-30 09:54:50,208 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2504 transitions. [2023-08-30 09:54:50,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2504 transitions. [2023-08-30 09:54:50,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:50,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2504 transitions. [2023-08-30 09:54:50,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 147.2941176470588) internal successors, (2504), 17 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 325.0) internal successors, (5850), 18 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,218 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 325.0) internal successors, (5850), 18 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,218 INFO L175 Difference]: Start difference. First operand has 105 places, 70 transitions, 570 flow. Second operand 17 states and 2504 transitions. [2023-08-30 09:54:50,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 163 transitions, 1213 flow [2023-08-30 09:54:50,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 163 transitions, 1166 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 09:54:50,233 INFO L231 Difference]: Finished difference. Result has 114 places, 73 transitions, 659 flow [2023-08-30 09:54:50,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=659, PETRI_PLACES=114, PETRI_TRANSITIONS=73} [2023-08-30 09:54:50,234 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 55 predicate places. [2023-08-30 09:54:50,234 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 73 transitions, 659 flow [2023-08-30 09:54:50,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:50,235 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] [2023-08-30 09:54:50,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 09:54:50,235 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:50,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash -378370100, now seen corresponding path program 1 times [2023-08-30 09:54:50,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:50,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209721831] [2023-08-30 09:54:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:50,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:50,338 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 09:54:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:50,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209721831] [2023-08-30 09:54:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209721831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872922301] [2023-08-30 09:54:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:50,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:50,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:50,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 73 transitions, 659 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:50,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:50,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:50,728 INFO L130 PetriNetUnfolder]: 1052/1841 cut-off events. [2023-08-30 09:54:50,729 INFO L131 PetriNetUnfolder]: For 6890/6890 co-relation queries the response was YES. [2023-08-30 09:54:50,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6656 conditions, 1841 events. 1052/1841 cut-off events. For 6890/6890 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10218 event pairs, 232 based on Foata normal form. 9/1850 useless extension candidates. Maximal degree in co-relation 6622. Up to 1106 conditions per place. [2023-08-30 09:54:50,735 INFO L137 encePairwiseOnDemand]: 313/325 looper letters, 106 selfloop transitions, 30 changer transitions 8/148 dead transitions. [2023-08-30 09:54:50,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 148 transitions, 1194 flow [2023-08-30 09:54:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:54:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:54:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1932 transitions. [2023-08-30 09:54:50,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45727810650887574 [2023-08-30 09:54:50,738 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1932 transitions. [2023-08-30 09:54:50,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1932 transitions. [2023-08-30 09:54:50,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:50,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1932 transitions. [2023-08-30 09:54:50,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 148.6153846153846) internal successors, (1932), 13 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,745 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,745 INFO L175 Difference]: Start difference. First operand has 114 places, 73 transitions, 659 flow. Second operand 13 states and 1932 transitions. [2023-08-30 09:54:50,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 148 transitions, 1194 flow [2023-08-30 09:54:50,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 148 transitions, 1135 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-08-30 09:54:50,764 INFO L231 Difference]: Finished difference. Result has 116 places, 75 transitions, 705 flow [2023-08-30 09:54:50,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=705, PETRI_PLACES=116, PETRI_TRANSITIONS=75} [2023-08-30 09:54:50,765 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 57 predicate places. [2023-08-30 09:54:50,765 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 75 transitions, 705 flow [2023-08-30 09:54:50,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:50,765 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] [2023-08-30 09:54:50,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 09:54:50,766 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:50,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:50,766 INFO L85 PathProgramCache]: Analyzing trace with hash -138781356, now seen corresponding path program 2 times [2023-08-30 09:54:50,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:50,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565626626] [2023-08-30 09:54:50,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:50,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:50,841 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 09:54:50,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:50,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565626626] [2023-08-30 09:54:50,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565626626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:50,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:50,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:54:50,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233135314] [2023-08-30 09:54:50,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:50,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:54:50,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:50,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:54:50,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:54:50,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2023-08-30 09:54:50,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 75 transitions, 705 flow. Second operand has 7 states, 7 states have (on average 145.85714285714286) internal successors, (1021), 7 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:50,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:50,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2023-08-30 09:54:50,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:51,142 INFO L130 PetriNetUnfolder]: 1037/1820 cut-off events. [2023-08-30 09:54:51,142 INFO L131 PetriNetUnfolder]: For 6809/6809 co-relation queries the response was YES. [2023-08-30 09:54:51,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6688 conditions, 1820 events. 1037/1820 cut-off events. For 6809/6809 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10111 event pairs, 253 based on Foata normal form. 9/1829 useless extension candidates. Maximal degree in co-relation 6652. Up to 1275 conditions per place. [2023-08-30 09:54:51,148 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 75 selfloop transitions, 12 changer transitions 21/112 dead transitions. [2023-08-30 09:54:51,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 1008 flow [2023-08-30 09:54:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 09:54:51,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 09:54:51,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1226 transitions. [2023-08-30 09:54:51,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715384615384615 [2023-08-30 09:54:51,150 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1226 transitions. [2023-08-30 09:54:51,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1226 transitions. [2023-08-30 09:54:51,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:51,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1226 transitions. [2023-08-30 09:54:51,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.25) internal successors, (1226), 8 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,154 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,154 INFO L175 Difference]: Start difference. First operand has 116 places, 75 transitions, 705 flow. Second operand 8 states and 1226 transitions. [2023-08-30 09:54:51,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 1008 flow [2023-08-30 09:54:51,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 960 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-30 09:54:51,174 INFO L231 Difference]: Finished difference. Result has 114 places, 67 transitions, 574 flow [2023-08-30 09:54:51,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=574, PETRI_PLACES=114, PETRI_TRANSITIONS=67} [2023-08-30 09:54:51,174 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 55 predicate places. [2023-08-30 09:54:51,175 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 67 transitions, 574 flow [2023-08-30 09:54:51,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.85714285714286) internal successors, (1021), 7 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:51,175 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] [2023-08-30 09:54:51,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 09:54:51,175 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:51,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1864394217, now seen corresponding path program 2 times [2023-08-30 09:54:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:51,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282403967] [2023-08-30 09:54:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:51,250 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 09:54:51,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:51,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282403967] [2023-08-30 09:54:51,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282403967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:51,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:51,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895347014] [2023-08-30 09:54:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:51,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:51,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:51,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:51,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 67 transitions, 574 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:51,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:51,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:51,590 INFO L130 PetriNetUnfolder]: 879/1548 cut-off events. [2023-08-30 09:54:51,591 INFO L131 PetriNetUnfolder]: For 5659/5659 co-relation queries the response was YES. [2023-08-30 09:54:51,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 1548 events. 879/1548 cut-off events. For 5659/5659 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8249 event pairs, 151 based on Foata normal form. 9/1557 useless extension candidates. Maximal degree in co-relation 5486. Up to 511 conditions per place. [2023-08-30 09:54:51,596 INFO L137 encePairwiseOnDemand]: 313/325 looper letters, 101 selfloop transitions, 31 changer transitions 10/146 dead transitions. [2023-08-30 09:54:51,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 146 transitions, 1082 flow [2023-08-30 09:54:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 09:54:51,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 09:54:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2072 transitions. [2023-08-30 09:54:51,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553846153846154 [2023-08-30 09:54:51,599 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2072 transitions. [2023-08-30 09:54:51,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2072 transitions. [2023-08-30 09:54:51,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:51,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2072 transitions. [2023-08-30 09:54:51,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,606 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,606 INFO L175 Difference]: Start difference. First operand has 114 places, 67 transitions, 574 flow. Second operand 14 states and 2072 transitions. [2023-08-30 09:54:51,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 146 transitions, 1082 flow [2023-08-30 09:54:51,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 146 transitions, 1027 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-30 09:54:51,622 INFO L231 Difference]: Finished difference. Result has 113 places, 66 transitions, 557 flow [2023-08-30 09:54:51,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=557, PETRI_PLACES=113, PETRI_TRANSITIONS=66} [2023-08-30 09:54:51,622 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 54 predicate places. [2023-08-30 09:54:51,622 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 66 transitions, 557 flow [2023-08-30 09:54:51,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:51,623 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] [2023-08-30 09:54:51,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 09:54:51,623 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:51,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1864394188, now seen corresponding path program 3 times [2023-08-30 09:54:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:51,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069344582] [2023-08-30 09:54:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:51,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:51,700 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 09:54:51,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:51,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069344582] [2023-08-30 09:54:51,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069344582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:51,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:51,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118177379] [2023-08-30 09:54:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:51,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:51,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:51,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:51,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 66 transitions, 557 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:51,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:51,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:51,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:52,064 INFO L130 PetriNetUnfolder]: 852/1506 cut-off events. [2023-08-30 09:54:52,064 INFO L131 PetriNetUnfolder]: For 4069/4069 co-relation queries the response was YES. [2023-08-30 09:54:52,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5373 conditions, 1506 events. 852/1506 cut-off events. For 4069/4069 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8003 event pairs, 202 based on Foata normal form. 9/1515 useless extension candidates. Maximal degree in co-relation 5339. Up to 967 conditions per place. [2023-08-30 09:54:52,071 INFO L137 encePairwiseOnDemand]: 313/325 looper letters, 86 selfloop transitions, 16 changer transitions 9/115 dead transitions. [2023-08-30 09:54:52,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 115 transitions, 893 flow [2023-08-30 09:54:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:54:52,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:54:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1484 transitions. [2023-08-30 09:54:52,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4566153846153846 [2023-08-30 09:54:52,073 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1484 transitions. [2023-08-30 09:54:52,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1484 transitions. [2023-08-30 09:54:52,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:52,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1484 transitions. [2023-08-30 09:54:52,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 148.4) internal successors, (1484), 10 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,078 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,078 INFO L175 Difference]: Start difference. First operand has 113 places, 66 transitions, 557 flow. Second operand 10 states and 1484 transitions. [2023-08-30 09:54:52,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 115 transitions, 893 flow [2023-08-30 09:54:52,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 115 transitions, 813 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-08-30 09:54:52,090 INFO L231 Difference]: Finished difference. Result has 108 places, 63 transitions, 472 flow [2023-08-30 09:54:52,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=472, PETRI_PLACES=108, PETRI_TRANSITIONS=63} [2023-08-30 09:54:52,091 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 49 predicate places. [2023-08-30 09:54:52,091 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 63 transitions, 472 flow [2023-08-30 09:54:52,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:52,092 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] [2023-08-30 09:54:52,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 09:54:52,092 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:52,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1446185084, now seen corresponding path program 4 times [2023-08-30 09:54:52,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:52,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276053599] [2023-08-30 09:54:52,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:52,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:52,164 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 09:54:52,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:52,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276053599] [2023-08-30 09:54:52,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276053599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:52,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:52,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:52,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832118117] [2023-08-30 09:54:52,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:52,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:52,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:52,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:52,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 63 transitions, 472 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:52,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:52,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:52,529 INFO L130 PetriNetUnfolder]: 772/1366 cut-off events. [2023-08-30 09:54:52,529 INFO L131 PetriNetUnfolder]: For 2658/2658 co-relation queries the response was YES. [2023-08-30 09:54:52,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4677 conditions, 1366 events. 772/1366 cut-off events. For 2658/2658 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7116 event pairs, 94 based on Foata normal form. 9/1375 useless extension candidates. Maximal degree in co-relation 4647. Up to 394 conditions per place. [2023-08-30 09:54:52,533 INFO L137 encePairwiseOnDemand]: 313/325 looper letters, 86 selfloop transitions, 26 changer transitions 23/139 dead transitions. [2023-08-30 09:54:52,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 139 transitions, 963 flow [2023-08-30 09:54:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 09:54:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 09:54:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2204 transitions. [2023-08-30 09:54:52,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521025641025641 [2023-08-30 09:54:52,535 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2204 transitions. [2023-08-30 09:54:52,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2204 transitions. [2023-08-30 09:54:52,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:52,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2204 transitions. [2023-08-30 09:54:52,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 146.93333333333334) internal successors, (2204), 15 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 325.0) internal successors, (5200), 16 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,541 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 325.0) internal successors, (5200), 16 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,541 INFO L175 Difference]: Start difference. First operand has 108 places, 63 transitions, 472 flow. Second operand 15 states and 2204 transitions. [2023-08-30 09:54:52,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 139 transitions, 963 flow [2023-08-30 09:54:52,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 139 transitions, 920 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-08-30 09:54:52,548 INFO L231 Difference]: Finished difference. Result has 110 places, 58 transitions, 438 flow [2023-08-30 09:54:52,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=438, PETRI_PLACES=110, PETRI_TRANSITIONS=58} [2023-08-30 09:54:52,549 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 51 predicate places. [2023-08-30 09:54:52,549 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 58 transitions, 438 flow [2023-08-30 09:54:52,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:52,549 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] [2023-08-30 09:54:52,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 09:54:52,549 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:52,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash -378370071, now seen corresponding path program 3 times [2023-08-30 09:54:52,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:52,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595893045] [2023-08-30 09:54:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:52,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:52,626 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 09:54:52,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:52,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595893045] [2023-08-30 09:54:52,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595893045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:52,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:52,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:52,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764953660] [2023-08-30 09:54:52,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:52,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:52,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:52,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:52,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:52,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 58 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:52,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:52,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:52,914 INFO L130 PetriNetUnfolder]: 567/1008 cut-off events. [2023-08-30 09:54:52,914 INFO L131 PetriNetUnfolder]: For 2232/2232 co-relation queries the response was YES. [2023-08-30 09:54:52,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3552 conditions, 1008 events. 567/1008 cut-off events. For 2232/2232 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4855 event pairs, 67 based on Foata normal form. 9/1017 useless extension candidates. Maximal degree in co-relation 3523. Up to 304 conditions per place. [2023-08-30 09:54:52,917 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 86 selfloop transitions, 24 changer transitions 10/124 dead transitions. [2023-08-30 09:54:52,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 855 flow [2023-08-30 09:54:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 09:54:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 09:54:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2196 transitions. [2023-08-30 09:54:52,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45046153846153847 [2023-08-30 09:54:52,920 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2196 transitions. [2023-08-30 09:54:52,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2196 transitions. [2023-08-30 09:54:52,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:52,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2196 transitions. [2023-08-30 09:54:52,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 146.4) internal successors, (2196), 15 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 325.0) internal successors, (5200), 16 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,927 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 325.0) internal successors, (5200), 16 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,927 INFO L175 Difference]: Start difference. First operand has 110 places, 58 transitions, 438 flow. Second operand 15 states and 2196 transitions. [2023-08-30 09:54:52,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 855 flow [2023-08-30 09:54:52,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 124 transitions, 726 flow, removed 3 selfloop flow, removed 24 redundant places. [2023-08-30 09:54:52,935 INFO L231 Difference]: Finished difference. Result has 94 places, 53 transitions, 329 flow [2023-08-30 09:54:52,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=329, PETRI_PLACES=94, PETRI_TRANSITIONS=53} [2023-08-30 09:54:52,935 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 35 predicate places. [2023-08-30 09:54:52,936 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 53 transitions, 329 flow [2023-08-30 09:54:52,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:52,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:52,936 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] [2023-08-30 09:54:52,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 09:54:52,936 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:52,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:52,937 INFO L85 PathProgramCache]: Analyzing trace with hash -378325111, now seen corresponding path program 1 times [2023-08-30 09:54:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:52,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722413116] [2023-08-30 09:54:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:52,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:53,008 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 09:54:53,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722413116] [2023-08-30 09:54:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722413116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:53,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:53,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380133700] [2023-08-30 09:54:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:53,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:53,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:53,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:53,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:53,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 53 transitions, 329 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:53,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:53,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:53,314 INFO L130 PetriNetUnfolder]: 523/934 cut-off events. [2023-08-30 09:54:53,314 INFO L131 PetriNetUnfolder]: For 1208/1208 co-relation queries the response was YES. [2023-08-30 09:54:53,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 934 events. 523/934 cut-off events. For 1208/1208 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4398 event pairs, 67 based on Foata normal form. 9/943 useless extension candidates. Maximal degree in co-relation 2945. Up to 264 conditions per place. [2023-08-30 09:54:53,317 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 89 selfloop transitions, 32 changer transitions 2/127 dead transitions. [2023-08-30 09:54:53,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 127 transitions, 814 flow [2023-08-30 09:54:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 09:54:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 09:54:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2337 transitions. [2023-08-30 09:54:53,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494230769230769 [2023-08-30 09:54:53,320 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2337 transitions. [2023-08-30 09:54:53,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2337 transitions. [2023-08-30 09:54:53,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:53,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2337 transitions. [2023-08-30 09:54:53,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 146.0625) internal successors, (2337), 16 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,327 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,327 INFO L175 Difference]: Start difference. First operand has 94 places, 53 transitions, 329 flow. Second operand 16 states and 2337 transitions. [2023-08-30 09:54:53,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 127 transitions, 814 flow [2023-08-30 09:54:53,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 127 transitions, 762 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-30 09:54:53,332 INFO L231 Difference]: Finished difference. Result has 93 places, 60 transitions, 408 flow [2023-08-30 09:54:53,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=408, PETRI_PLACES=93, PETRI_TRANSITIONS=60} [2023-08-30 09:54:53,333 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 34 predicate places. [2023-08-30 09:54:53,333 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 60 transitions, 408 flow [2023-08-30 09:54:53,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:53,334 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] [2023-08-30 09:54:53,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 09:54:53,334 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:53,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1354205362, now seen corresponding path program 1 times [2023-08-30 09:54:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:53,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395755657] [2023-08-30 09:54:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:53,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:53,404 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 09:54:53,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395755657] [2023-08-30 09:54:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395755657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:53,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:53,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876399327] [2023-08-30 09:54:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:53,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:53,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:53,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:53,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:53,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 60 transitions, 408 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:53,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:53,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:53,710 INFO L130 PetriNetUnfolder]: 563/1016 cut-off events. [2023-08-30 09:54:53,710 INFO L131 PetriNetUnfolder]: For 1933/1933 co-relation queries the response was YES. [2023-08-30 09:54:53,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3256 conditions, 1016 events. 563/1016 cut-off events. For 1933/1933 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4960 event pairs, 67 based on Foata normal form. 27/1043 useless extension candidates. Maximal degree in co-relation 3231. Up to 289 conditions per place. [2023-08-30 09:54:53,713 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 82 selfloop transitions, 26 changer transitions 14/126 dead transitions. [2023-08-30 09:54:53,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 126 transitions, 848 flow [2023-08-30 09:54:53,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:54:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:54:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1912 transitions. [2023-08-30 09:54:53,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45254437869822484 [2023-08-30 09:54:53,716 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1912 transitions. [2023-08-30 09:54:53,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1912 transitions. [2023-08-30 09:54:53,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:53,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1912 transitions. [2023-08-30 09:54:53,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 147.07692307692307) internal successors, (1912), 13 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,722 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,722 INFO L175 Difference]: Start difference. First operand has 93 places, 60 transitions, 408 flow. Second operand 13 states and 1912 transitions. [2023-08-30 09:54:53,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 126 transitions, 848 flow [2023-08-30 09:54:53,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 126 transitions, 814 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-30 09:54:53,729 INFO L231 Difference]: Finished difference. Result has 99 places, 53 transitions, 371 flow [2023-08-30 09:54:53,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=371, PETRI_PLACES=99, PETRI_TRANSITIONS=53} [2023-08-30 09:54:53,729 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 40 predicate places. [2023-08-30 09:54:53,730 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 53 transitions, 371 flow [2023-08-30 09:54:53,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:53,730 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] [2023-08-30 09:54:53,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 09:54:53,730 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:53,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:53,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1864439177, now seen corresponding path program 2 times [2023-08-30 09:54:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:53,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144092979] [2023-08-30 09:54:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:53,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:53,802 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 09:54:53,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:53,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144092979] [2023-08-30 09:54:53,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144092979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:53,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:53,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:53,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501994859] [2023-08-30 09:54:53,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:53,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:53,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:53,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:53,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:53,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 53 transitions, 371 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:53,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:53,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:53,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:54,067 INFO L130 PetriNetUnfolder]: 442/808 cut-off events. [2023-08-30 09:54:54,067 INFO L131 PetriNetUnfolder]: For 1280/1280 co-relation queries the response was YES. [2023-08-30 09:54:54,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 808 events. 442/808 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3762 event pairs, 37 based on Foata normal form. 18/826 useless extension candidates. Maximal degree in co-relation 2603. Up to 195 conditions per place. [2023-08-30 09:54:54,070 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 51 selfloop transitions, 11 changer transitions 48/114 dead transitions. [2023-08-30 09:54:54,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 114 transitions, 731 flow [2023-08-30 09:54:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:54:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:54:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1908 transitions. [2023-08-30 09:54:54,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4515976331360947 [2023-08-30 09:54:54,073 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1908 transitions. [2023-08-30 09:54:54,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1908 transitions. [2023-08-30 09:54:54,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:54,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1908 transitions. [2023-08-30 09:54:54,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 146.76923076923077) internal successors, (1908), 13 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:54,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:54,079 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:54,079 INFO L175 Difference]: Start difference. First operand has 99 places, 53 transitions, 371 flow. Second operand 13 states and 1908 transitions. [2023-08-30 09:54:54,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 114 transitions, 731 flow [2023-08-30 09:54:54,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 114 transitions, 642 flow, removed 5 selfloop flow, removed 20 redundant places. [2023-08-30 09:54:54,084 INFO L231 Difference]: Finished difference. Result has 84 places, 35 transitions, 168 flow [2023-08-30 09:54:54,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=168, PETRI_PLACES=84, PETRI_TRANSITIONS=35} [2023-08-30 09:54:54,085 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 25 predicate places. [2023-08-30 09:54:54,085 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 35 transitions, 168 flow [2023-08-30 09:54:54,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:54,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:54,085 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] [2023-08-30 09:54:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 09:54:54,086 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 09:54:54,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:54,086 INFO L85 PathProgramCache]: Analyzing trace with hash -378325170, now seen corresponding path program 2 times [2023-08-30 09:54:54,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:54,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133607949] [2023-08-30 09:54:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:54:54,161 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 09:54:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:54:54,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133607949] [2023-08-30 09:54:54,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133607949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:54:54,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:54:54,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:54:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054378234] [2023-08-30 09:54:54,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:54:54,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:54:54,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:54:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:54:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:54:54,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 325 [2023-08-30 09:54:54,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 35 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:54,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:54:54,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 325 [2023-08-30 09:54:54,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:54:54,376 INFO L130 PetriNetUnfolder]: 190/367 cut-off events. [2023-08-30 09:54:54,376 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2023-08-30 09:54:54,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 367 events. 190/367 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1342 event pairs, 43 based on Foata normal form. 9/376 useless extension candidates. Maximal degree in co-relation 1053. Up to 102 conditions per place. [2023-08-30 09:54:54,377 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2023-08-30 09:54:54,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 401 flow [2023-08-30 09:54:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:54:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:54:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1731 transitions. [2023-08-30 09:54:54,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44384615384615383 [2023-08-30 09:54:54,378 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1731 transitions. [2023-08-30 09:54:54,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1731 transitions. [2023-08-30 09:54:54,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:54:54,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1731 transitions. [2023-08-30 09:54:54,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.25) internal successors, (1731), 12 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:54,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 325.0) internal successors, (4225), 13 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:54,384 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 325.0) internal successors, (4225), 13 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:54,384 INFO L175 Difference]: Start difference. First operand has 84 places, 35 transitions, 168 flow. Second operand 12 states and 1731 transitions. [2023-08-30 09:54:54,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 401 flow [2023-08-30 09:54:54,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 343 flow, removed 1 selfloop flow, removed 18 redundant places. [2023-08-30 09:54:54,386 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-30 09:54:54,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-30 09:54:54,386 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2023-08-30 09:54:54,386 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-30 09:54:54,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:54:54,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 09:54:54,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 09:54:54,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 09:54:54,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 09:54:54,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 09:54:54,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 09:54:54,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 09:54:54,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 09:54:54,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 09:54:54,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 09:54:54,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 09:54:54,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 09:54:54,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 09:54:54,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 09:54:54,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 09:54:54,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 09:54:54,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 09:54:54,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 09:54:54,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 09:54:54,390 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:54:54,390 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 (1/2) [2023-08-30 09:54:54,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:54,413 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2023-08-30 09:54:54,414 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:54:54,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 906 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2023-08-30 09:54:54,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:54,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:54,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:54,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:54,417 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:54,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 178 transitions, 374 flow [2023-08-30 09:54:54,437 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2023-08-30 09:54:54,437 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 09:54:54,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 906 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2023-08-30 09:54:54,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 11880 [2023-08-30 09:54:57,403 INFO L134 LiptonReduction]: Checked pairs total: 30770 [2023-08-30 09:54:57,403 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-30 09:54:57,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 09:54:57,405 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;@588aef5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:54:57,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 09:54:57,408 INFO L130 PetriNetUnfolder]: 15/76 cut-off events. [2023-08-30 09:54:57,408 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 09:54:57,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:54:57,408 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 09:54:57,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 09:54:57,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:54:57,410 INFO L85 PathProgramCache]: Analyzing trace with hash 910831364, now seen corresponding path program 1 times [2023-08-30 09:54:57,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:54:57,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627141518] [2023-08-30 09:54:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:54:57,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:54:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:54:57,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 09:54:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 09:54:57,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 09:54:57,439 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 09:54:57,439 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 09:54:57,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 09:54:57,439 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 09:54:57,439 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 09:54:57,440 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 09:54:57,440 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 09:54:57,463 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 09:54:57,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 216 transitions, 462 flow [2023-08-30 09:54:57,502 INFO L130 PetriNetUnfolder]: 62/462 cut-off events. [2023-08-30 09:54:57,502 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 09:54:57,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 462 events. 62/462 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1579 event pairs, 1 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2023-08-30 09:54:57,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 216 transitions, 462 flow [2023-08-30 09:54:57,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 216 transitions, 462 flow [2023-08-30 09:54:57,508 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:54:57,508 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 216 transitions, 462 flow [2023-08-30 09:54:57,508 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 216 transitions, 462 flow [2023-08-30 09:54:57,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 216 transitions, 462 flow [2023-08-30 09:54:57,543 INFO L130 PetriNetUnfolder]: 62/462 cut-off events. [2023-08-30 09:54:57,543 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 09:54:57,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 462 events. 62/462 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1579 event pairs, 1 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2023-08-30 09:54:57,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 22032 [2023-08-30 09:55:00,517 INFO L134 LiptonReduction]: Checked pairs total: 60665 [2023-08-30 09:55:00,517 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-08-30 09:55:00,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:55:00,519 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;@588aef5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:55:00,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 09:55:00,520 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-30 09:55:00,520 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:55:00,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:00,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 09:55:00,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:00,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:00,521 INFO L85 PathProgramCache]: Analyzing trace with hash 51293, now seen corresponding path program 1 times [2023-08-30 09:55:00,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:00,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800938153] [2023-08-30 09:55:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:00,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:00,543 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 09:55:00,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:00,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800938153] [2023-08-30 09:55:00,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800938153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:00,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:00,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:55:00,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784327518] [2023-08-30 09:55:00,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:00,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:55:00,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:00,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:55:00,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:55:00,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 387 [2023-08-30 09:55:00,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 95 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:00,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:00,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 387 [2023-08-30 09:55:00,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:09,178 INFO L130 PetriNetUnfolder]: 125768/177453 cut-off events. [2023-08-30 09:55:09,179 INFO L131 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2023-08-30 09:55:09,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352174 conditions, 177453 events. 125768/177453 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 5554. Compared 1358310 event pairs, 79706 based on Foata normal form. 16648/135738 useless extension candidates. Maximal degree in co-relation 23240. Up to 172974 conditions per place. [2023-08-30 09:55:10,019 INFO L137 encePairwiseOnDemand]: 358/387 looper letters, 78 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-08-30 09:55:10,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 368 flow [2023-08-30 09:55:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:55:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:55:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-30 09:55:10,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5676141257536607 [2023-08-30 09:55:10,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-30 09:55:10,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-30 09:55:10,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:10,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-30 09:55:10,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:10,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:10,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:10,025 INFO L175 Difference]: Start difference. First operand has 77 places, 95 transitions, 220 flow. Second operand 3 states and 659 transitions. [2023-08-30 09:55:10,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 368 flow [2023-08-30 09:55:10,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:55:10,028 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 198 flow [2023-08-30 09:55:10,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-30 09:55:10,028 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-08-30 09:55:10,028 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 198 flow [2023-08-30 09:55:10,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:10,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:10,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:55:10,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 09:55:10,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:10,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash 124955209, now seen corresponding path program 1 times [2023-08-30 09:55:10,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:10,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620207051] [2023-08-30 09:55:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:10,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:55:10,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620207051] [2023-08-30 09:55:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620207051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:10,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:10,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:55:10,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416662730] [2023-08-30 09:55:10,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:10,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:55:10,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:55:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:55:10,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 387 [2023-08-30 09:55:10,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:10,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:10,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 387 [2023-08-30 09:55:10,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:18,647 INFO L130 PetriNetUnfolder]: 117789/165482 cut-off events. [2023-08-30 09:55:18,647 INFO L131 PetriNetUnfolder]: For 8318/8318 co-relation queries the response was YES. [2023-08-30 09:55:18,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346822 conditions, 165482 events. 117789/165482 cut-off events. For 8318/8318 co-relation queries the response was YES. Maximal size of possible extension queue 5164. Compared 1249947 event pairs, 114609 based on Foata normal form. 0/115194 useless extension candidates. Maximal degree in co-relation 346716. Up to 162071 conditions per place. [2023-08-30 09:55:19,509 INFO L137 encePairwiseOnDemand]: 385/387 looper letters, 63 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-30 09:55:19,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 322 flow [2023-08-30 09:55:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:55:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:55:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-08-30 09:55:19,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176571920757967 [2023-08-30 09:55:19,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-08-30 09:55:19,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-08-30 09:55:19,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:19,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-08-30 09:55:19,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 09:55:19,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:19,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:19,512 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 198 flow. Second operand 3 states and 601 transitions. [2023-08-30 09:55:19,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 322 flow [2023-08-30 09:55:19,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:55:19,524 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 194 flow [2023-08-30 09:55:19,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-08-30 09:55:19,525 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-08-30 09:55:19,525 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 194 flow [2023-08-30 09:55:19,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:19,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:19,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 09:55:19,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 09:55:19,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:19,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash 124955211, now seen corresponding path program 1 times [2023-08-30 09:55:19,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:19,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479378566] [2023-08-30 09:55:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:55:19,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:19,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479378566] [2023-08-30 09:55:19,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479378566] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:55:19,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793846831] [2023-08-30 09:55:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:19,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:55:19,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:55:19,559 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 09:55:19,560 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 09:55:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:19,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 09:55:19,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:55:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:55:19,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:55:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:55:19,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793846831] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:55:19,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:55:19,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 09:55:19,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685413489] [2023-08-30 09:55:19,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:55:19,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:55:19,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:19,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:55:19,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:55:19,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 387 [2023-08-30 09:55:19,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:19,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:19,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 387 [2023-08-30 09:55:19,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:21,835 INFO L130 PetriNetUnfolder]: 29173/44042 cut-off events. [2023-08-30 09:55:21,835 INFO L131 PetriNetUnfolder]: For 12255/12255 co-relation queries the response was YES. [2023-08-30 09:55:21,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99853 conditions, 44042 events. 29173/44042 cut-off events. For 12255/12255 co-relation queries the response was YES. Maximal size of possible extension queue 1706. Compared 333549 event pairs, 2475 based on Foata normal form. 2940/34969 useless extension candidates. Maximal degree in co-relation 99842. Up to 20666 conditions per place. [2023-08-30 09:55:22,025 INFO L137 encePairwiseOnDemand]: 380/387 looper letters, 164 selfloop transitions, 6 changer transitions 0/178 dead transitions. [2023-08-30 09:55:22,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 178 transitions, 731 flow [2023-08-30 09:55:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:55:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:55:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1448 transitions. [2023-08-30 09:55:22,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534514581026209 [2023-08-30 09:55:22,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1448 transitions. [2023-08-30 09:55:22,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1448 transitions. [2023-08-30 09:55:22,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:22,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1448 transitions. [2023-08-30 09:55:22,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.85714285714286) internal successors, (1448), 7 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:22,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:22,030 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:22,030 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 194 flow. Second operand 7 states and 1448 transitions. [2023-08-30 09:55:22,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 178 transitions, 731 flow [2023-08-30 09:55:22,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 178 transitions, 724 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 09:55:22,054 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 154 flow [2023-08-30 09:55:22,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2023-08-30 09:55:22,055 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2023-08-30 09:55:22,055 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 154 flow [2023-08-30 09:55:22,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:22,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:22,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:22,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 09:55:22,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:55:22,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:22,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash -412217639, now seen corresponding path program 1 times [2023-08-30 09:55:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:22,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792635411] [2023-08-30 09:55:22,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:22,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:22,435 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 09:55:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:22,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792635411] [2023-08-30 09:55:22,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792635411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:22,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:22,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:55:22,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380216643] [2023-08-30 09:55:22,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:22,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:55:22,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:55:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:55:22,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 387 [2023-08-30 09:55:22,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:22,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:22,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 387 [2023-08-30 09:55:22,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:24,268 INFO L130 PetriNetUnfolder]: 27769/39349 cut-off events. [2023-08-30 09:55:24,268 INFO L131 PetriNetUnfolder]: For 8980/8980 co-relation queries the response was YES. [2023-08-30 09:55:24,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90123 conditions, 39349 events. 27769/39349 cut-off events. For 8980/8980 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 266218 event pairs, 13654 based on Foata normal form. 48/28168 useless extension candidates. Maximal degree in co-relation 90111. Up to 38435 conditions per place. [2023-08-30 09:55:24,455 INFO L137 encePairwiseOnDemand]: 377/387 looper letters, 63 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-08-30 09:55:24,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 354 flow [2023-08-30 09:55:24,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:55:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:55:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-30 09:55:24,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202411714039621 [2023-08-30 09:55:24,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-30 09:55:24,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-30 09:55:24,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:24,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-30 09:55:24,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:24,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:24,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:24,458 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 154 flow. Second operand 3 states and 604 transitions. [2023-08-30 09:55:24,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 354 flow [2023-08-30 09:55:24,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 331 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 09:55:24,466 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 177 flow [2023-08-30 09:55:24,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-30 09:55:24,467 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2023-08-30 09:55:24,467 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 177 flow [2023-08-30 09:55:24,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:24,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:24,467 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 09:55:24,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 09:55:24,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:24,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1196031751, now seen corresponding path program 1 times [2023-08-30 09:55:24,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:24,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319191861] [2023-08-30 09:55:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:24,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 09:55:24,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:24,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319191861] [2023-08-30 09:55:24,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319191861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:24,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:24,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:55:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119092812] [2023-08-30 09:55:24,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:24,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:55:24,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:24,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:55:24,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:55:24,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 387 [2023-08-30 09:55:24,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:24,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:24,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 387 [2023-08-30 09:55:24,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:26,254 INFO L130 PetriNetUnfolder]: 20182/29149 cut-off events. [2023-08-30 09:55:26,254 INFO L131 PetriNetUnfolder]: For 5990/6018 co-relation queries the response was YES. [2023-08-30 09:55:26,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66083 conditions, 29149 events. 20182/29149 cut-off events. For 5990/6018 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 195061 event pairs, 19525 based on Foata normal form. 0/23838 useless extension candidates. Maximal degree in co-relation 66071. Up to 28602 conditions per place. [2023-08-30 09:55:26,398 INFO L137 encePairwiseOnDemand]: 385/387 looper letters, 49 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 09:55:26,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 269 flow [2023-08-30 09:55:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:55:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:55:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-30 09:55:26,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5099052540913006 [2023-08-30 09:55:26,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-30 09:55:26,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-30 09:55:26,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:26,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-30 09:55:26,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:26,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:26,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:26,402 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 177 flow. Second operand 3 states and 592 transitions. [2023-08-30 09:55:26,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 269 flow [2023-08-30 09:55:26,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:55:26,407 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 167 flow [2023-08-30 09:55:26,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-08-30 09:55:26,407 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2023-08-30 09:55:26,407 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 167 flow [2023-08-30 09:55:26,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:26,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:26,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:26,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 09:55:26,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:26,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1416501222, now seen corresponding path program 1 times [2023-08-30 09:55:26,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:26,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701800455] [2023-08-30 09:55:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:26,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:26,445 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 09:55:26,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:26,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701800455] [2023-08-30 09:55:26,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701800455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:26,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:26,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:26,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388531870] [2023-08-30 09:55:26,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:26,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:55:26,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:55:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:55:26,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 387 [2023-08-30 09:55:26,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:26,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:26,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 387 [2023-08-30 09:55:26,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:28,967 INFO L130 PetriNetUnfolder]: 28862/42209 cut-off events. [2023-08-30 09:55:28,968 INFO L131 PetriNetUnfolder]: For 8677/8706 co-relation queries the response was YES. [2023-08-30 09:55:29,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95065 conditions, 42209 events. 28862/42209 cut-off events. For 8677/8706 co-relation queries the response was YES. Maximal size of possible extension queue 1823. Compared 304014 event pairs, 6628 based on Foata normal form. 27/36009 useless extension candidates. Maximal degree in co-relation 95052. Up to 23949 conditions per place. [2023-08-30 09:55:29,161 INFO L137 encePairwiseOnDemand]: 366/387 looper letters, 144 selfloop transitions, 30 changer transitions 0/182 dead transitions. [2023-08-30 09:55:29,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 182 transitions, 876 flow [2023-08-30 09:55:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:55:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:55:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1398 transitions. [2023-08-30 09:55:29,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160575858250277 [2023-08-30 09:55:29,163 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1398 transitions. [2023-08-30 09:55:29,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1398 transitions. [2023-08-30 09:55:29,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:29,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1398 transitions. [2023-08-30 09:55:29,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.71428571428572) internal successors, (1398), 7 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:29,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:29,167 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:29,167 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 167 flow. Second operand 7 states and 1398 transitions. [2023-08-30 09:55:29,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 182 transitions, 876 flow [2023-08-30 09:55:29,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 182 transitions, 875 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:55:29,173 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 428 flow [2023-08-30 09:55:29,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-08-30 09:55:29,174 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-08-30 09:55:29,174 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 428 flow [2023-08-30 09:55:29,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:29,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:29,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:29,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 09:55:29,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:29,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:29,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1416501130, now seen corresponding path program 1 times [2023-08-30 09:55:29,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:29,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542701008] [2023-08-30 09:55:29,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:29,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:29,210 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 09:55:29,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:29,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542701008] [2023-08-30 09:55:29,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542701008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:29,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:29,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:29,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412096225] [2023-08-30 09:55:29,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:29,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:55:29,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:29,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:55:29,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:55:29,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 387 [2023-08-30 09:55:29,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:29,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:29,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 387 [2023-08-30 09:55:29,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:32,152 INFO L130 PetriNetUnfolder]: 29978/44918 cut-off events. [2023-08-30 09:55:32,153 INFO L131 PetriNetUnfolder]: For 43102/43163 co-relation queries the response was YES. [2023-08-30 09:55:32,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129611 conditions, 44918 events. 29978/44918 cut-off events. For 43102/43163 co-relation queries the response was YES. Maximal size of possible extension queue 1990. Compared 341286 event pairs, 6055 based on Foata normal form. 1965/46878 useless extension candidates. Maximal degree in co-relation 129592. Up to 27612 conditions per place. [2023-08-30 09:55:32,401 INFO L137 encePairwiseOnDemand]: 366/387 looper letters, 164 selfloop transitions, 42 changer transitions 0/214 dead transitions. [2023-08-30 09:55:32,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 214 transitions, 1397 flow [2023-08-30 09:55:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:55:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:55:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1398 transitions. [2023-08-30 09:55:32,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160575858250277 [2023-08-30 09:55:32,404 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1398 transitions. [2023-08-30 09:55:32,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1398 transitions. [2023-08-30 09:55:32,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:32,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1398 transitions. [2023-08-30 09:55:32,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.71428571428572) internal successors, (1398), 7 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:32,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:32,408 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:32,408 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 428 flow. Second operand 7 states and 1398 transitions. [2023-08-30 09:55:32,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 214 transitions, 1397 flow [2023-08-30 09:55:32,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 214 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:55:32,462 INFO L231 Difference]: Finished difference. Result has 88 places, 117 transitions, 904 flow [2023-08-30 09:55:32,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=904, PETRI_PLACES=88, PETRI_TRANSITIONS=117} [2023-08-30 09:55:32,463 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2023-08-30 09:55:32,463 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 117 transitions, 904 flow [2023-08-30 09:55:32,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:32,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:32,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:32,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 09:55:32,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:32,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1883891970, now seen corresponding path program 1 times [2023-08-30 09:55:32,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:32,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765899768] [2023-08-30 09:55:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:32,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:32,501 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 09:55:32,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:32,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765899768] [2023-08-30 09:55:32,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765899768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:32,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:32,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:32,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928434992] [2023-08-30 09:55:32,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:32,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:55:32,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:32,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:55:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:55:32,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 387 [2023-08-30 09:55:32,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 904 flow. Second operand has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:32,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:32,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 387 [2023-08-30 09:55:32,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:36,301 INFO L130 PetriNetUnfolder]: 34914/51874 cut-off events. [2023-08-30 09:55:36,301 INFO L131 PetriNetUnfolder]: For 123593/123686 co-relation queries the response was YES. [2023-08-30 09:55:36,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178629 conditions, 51874 events. 34914/51874 cut-off events. For 123593/123686 co-relation queries the response was YES. Maximal size of possible extension queue 2259. Compared 391802 event pairs, 8500 based on Foata normal form. 1170/53035 useless extension candidates. Maximal degree in co-relation 178605. Up to 34593 conditions per place. [2023-08-30 09:55:36,674 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 199 selfloop transitions, 53 changer transitions 0/260 dead transitions. [2023-08-30 09:55:36,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 260 transitions, 2256 flow [2023-08-30 09:55:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:55:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:55:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1388 transitions. [2023-08-30 09:55:36,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123661867847914 [2023-08-30 09:55:36,675 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1388 transitions. [2023-08-30 09:55:36,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1388 transitions. [2023-08-30 09:55:36,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:36,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1388 transitions. [2023-08-30 09:55:36,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.28571428571428) internal successors, (1388), 7 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:36,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:36,679 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:36,679 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 904 flow. Second operand 7 states and 1388 transitions. [2023-08-30 09:55:36,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 260 transitions, 2256 flow [2023-08-30 09:55:37,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 260 transitions, 2243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 09:55:37,035 INFO L231 Difference]: Finished difference. Result has 96 places, 151 transitions, 1486 flow [2023-08-30 09:55:37,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1486, PETRI_PLACES=96, PETRI_TRANSITIONS=151} [2023-08-30 09:55:37,035 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2023-08-30 09:55:37,035 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 151 transitions, 1486 flow [2023-08-30 09:55:37,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:37,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:37,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:37,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 09:55:37,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:37,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:37,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1883891969, now seen corresponding path program 1 times [2023-08-30 09:55:37,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:37,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235209496] [2023-08-30 09:55:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:37,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:37,075 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 09:55:37,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235209496] [2023-08-30 09:55:37,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235209496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:37,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:37,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711342175] [2023-08-30 09:55:37,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:37,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:55:37,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:55:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:55:37,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 387 [2023-08-30 09:55:37,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 151 transitions, 1486 flow. Second operand has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:37,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:37,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 387 [2023-08-30 09:55:37,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:41,191 INFO L130 PetriNetUnfolder]: 32710/49010 cut-off events. [2023-08-30 09:55:41,191 INFO L131 PetriNetUnfolder]: For 180065/180162 co-relation queries the response was YES. [2023-08-30 09:55:41,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182349 conditions, 49010 events. 32710/49010 cut-off events. For 180065/180162 co-relation queries the response was YES. Maximal size of possible extension queue 2189. Compared 373589 event pairs, 8386 based on Foata normal form. 1164/50165 useless extension candidates. Maximal degree in co-relation 182320. Up to 33316 conditions per place. [2023-08-30 09:55:41,546 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 191 selfloop transitions, 53 changer transitions 0/252 dead transitions. [2023-08-30 09:55:41,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 252 transitions, 2402 flow [2023-08-30 09:55:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:55:41,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:55:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1388 transitions. [2023-08-30 09:55:41,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123661867847914 [2023-08-30 09:55:41,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1388 transitions. [2023-08-30 09:55:41,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1388 transitions. [2023-08-30 09:55:41,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:41,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1388 transitions. [2023-08-30 09:55:41,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.28571428571428) internal successors, (1388), 7 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:41,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:41,552 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:41,552 INFO L175 Difference]: Start difference. First operand has 96 places, 151 transitions, 1486 flow. Second operand 7 states and 1388 transitions. [2023-08-30 09:55:41,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 252 transitions, 2402 flow [2023-08-30 09:55:42,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 252 transitions, 2371 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:55:42,099 INFO L231 Difference]: Finished difference. Result has 101 places, 152 transitions, 1553 flow [2023-08-30 09:55:42,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1553, PETRI_PLACES=101, PETRI_TRANSITIONS=152} [2023-08-30 09:55:42,100 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2023-08-30 09:55:42,100 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 152 transitions, 1553 flow [2023-08-30 09:55:42,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:42,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:42,100 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:42,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 09:55:42,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:42,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash 760524209, now seen corresponding path program 1 times [2023-08-30 09:55:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:42,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937478959] [2023-08-30 09:55:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:42,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:55:42,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:42,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937478959] [2023-08-30 09:55:42,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937478959] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:42,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870156644] [2023-08-30 09:55:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:42,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:55:42,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:55:42,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:55:42,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 387 [2023-08-30 09:55:42,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 152 transitions, 1553 flow. Second operand has 5 states, 5 states have (on average 177.6) internal successors, (888), 5 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:42,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:42,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 387 [2023-08-30 09:55:42,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:47,189 INFO L130 PetriNetUnfolder]: 40810/60361 cut-off events. [2023-08-30 09:55:47,190 INFO L131 PetriNetUnfolder]: For 243647/243708 co-relation queries the response was YES. [2023-08-30 09:55:47,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225742 conditions, 60361 events. 40810/60361 cut-off events. For 243647/243708 co-relation queries the response was YES. Maximal size of possible extension queue 2660. Compared 461399 event pairs, 10276 based on Foata normal form. 1110/61462 useless extension candidates. Maximal degree in co-relation 225712. Up to 40344 conditions per place. [2023-08-30 09:55:47,653 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 243 selfloop transitions, 79 changer transitions 0/329 dead transitions. [2023-08-30 09:55:47,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 329 transitions, 3636 flow [2023-08-30 09:55:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:55:47,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:55:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1397 transitions. [2023-08-30 09:55:47,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515688445921004 [2023-08-30 09:55:47,656 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1397 transitions. [2023-08-30 09:55:47,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1397 transitions. [2023-08-30 09:55:47,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:47,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1397 transitions. [2023-08-30 09:55:47,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.57142857142858) internal successors, (1397), 7 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:47,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:47,659 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:47,660 INFO L175 Difference]: Start difference. First operand has 101 places, 152 transitions, 1553 flow. Second operand 7 states and 1397 transitions. [2023-08-30 09:55:47,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 329 transitions, 3636 flow [2023-08-30 09:55:48,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 329 transitions, 3607 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 09:55:48,404 INFO L231 Difference]: Finished difference. Result has 110 places, 202 transitions, 2563 flow [2023-08-30 09:55:48,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2563, PETRI_PLACES=110, PETRI_TRANSITIONS=202} [2023-08-30 09:55:48,404 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 33 predicate places. [2023-08-30 09:55:48,405 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 202 transitions, 2563 flow [2023-08-30 09:55:48,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.6) internal successors, (888), 5 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:48,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:48,405 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:48,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 09:55:48,405 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:48,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:48,405 INFO L85 PathProgramCache]: Analyzing trace with hash 760524089, now seen corresponding path program 1 times [2023-08-30 09:55:48,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:48,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434409602] [2023-08-30 09:55:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:48,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:55:48,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434409602] [2023-08-30 09:55:48,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434409602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:48,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:48,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:48,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073568395] [2023-08-30 09:55:48,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:48,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:55:48,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:48,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:55:48,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 09:55:48,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 387 [2023-08-30 09:55:48,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 202 transitions, 2563 flow. Second operand has 5 states, 5 states have (on average 177.6) internal successors, (888), 5 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:48,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:48,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 387 [2023-08-30 09:55:48,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:53,853 INFO L130 PetriNetUnfolder]: 38214/56772 cut-off events. [2023-08-30 09:55:53,853 INFO L131 PetriNetUnfolder]: For 330282/330343 co-relation queries the response was YES. [2023-08-30 09:55:54,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232935 conditions, 56772 events. 38214/56772 cut-off events. For 330282/330343 co-relation queries the response was YES. Maximal size of possible extension queue 2533. Compared 433625 event pairs, 10147 based on Foata normal form. 1110/57873 useless extension candidates. Maximal degree in co-relation 232899. Up to 38597 conditions per place. [2023-08-30 09:55:54,315 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 223 selfloop transitions, 79 changer transitions 0/309 dead transitions. [2023-08-30 09:55:54,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 309 transitions, 3748 flow [2023-08-30 09:55:54,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:55:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:55:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1397 transitions. [2023-08-30 09:55:54,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515688445921004 [2023-08-30 09:55:54,317 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1397 transitions. [2023-08-30 09:55:54,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1397 transitions. [2023-08-30 09:55:54,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:54,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1397 transitions. [2023-08-30 09:55:54,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.57142857142858) internal successors, (1397), 7 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:54,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:54,321 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:54,321 INFO L175 Difference]: Start difference. First operand has 110 places, 202 transitions, 2563 flow. Second operand 7 states and 1397 transitions. [2023-08-30 09:55:54,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 309 transitions, 3748 flow [2023-08-30 09:55:55,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 309 transitions, 3680 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-30 09:55:55,144 INFO L231 Difference]: Finished difference. Result has 115 places, 202 transitions, 2631 flow [2023-08-30 09:55:55,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2631, PETRI_PLACES=115, PETRI_TRANSITIONS=202} [2023-08-30 09:55:55,144 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2023-08-30 09:55:55,144 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 202 transitions, 2631 flow [2023-08-30 09:55:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.6) internal successors, (888), 5 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:55,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:55,145 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:55:55,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-30 09:55:55,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:55,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1060503209, now seen corresponding path program 1 times [2023-08-30 09:55:55,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:55,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77483386] [2023-08-30 09:55:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:55,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:55,191 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 09:55:55,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:55,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77483386] [2023-08-30 09:55:55,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77483386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:55,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:55,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020179278] [2023-08-30 09:55:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:55,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:55:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:55,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:55:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:55:55,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:55:55,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 202 transitions, 2631 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:55,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:55,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:55:55,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:56,533 INFO L130 PetriNetUnfolder]: 7082/12129 cut-off events. [2023-08-30 09:55:56,533 INFO L131 PetriNetUnfolder]: For 71383/71383 co-relation queries the response was YES. [2023-08-30 09:55:56,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46921 conditions, 12129 events. 7082/12129 cut-off events. For 71383/71383 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 87450 event pairs, 2423 based on Foata normal form. 1572/13700 useless extension candidates. Maximal degree in co-relation 46884. Up to 7155 conditions per place. [2023-08-30 09:55:56,608 INFO L137 encePairwiseOnDemand]: 372/387 looper letters, 113 selfloop transitions, 17 changer transitions 0/137 dead transitions. [2023-08-30 09:55:56,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 137 transitions, 1570 flow [2023-08-30 09:55:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:55:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:55:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-08-30 09:55:56,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107665805340224 [2023-08-30 09:55:56,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-08-30 09:55:56,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-08-30 09:55:56,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:56,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-08-30 09:55:56,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:56,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:56,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:56,613 INFO L175 Difference]: Start difference. First operand has 115 places, 202 transitions, 2631 flow. Second operand 3 states and 593 transitions. [2023-08-30 09:55:56,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 137 transitions, 1570 flow [2023-08-30 09:55:56,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 137 transitions, 1504 flow, removed 28 selfloop flow, removed 7 redundant places. [2023-08-30 09:55:56,756 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 975 flow [2023-08-30 09:55:56,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=975, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2023-08-30 09:55:56,756 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2023-08-30 09:55:56,756 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 975 flow [2023-08-30 09:55:56,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:56,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:56,757 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] [2023-08-30 09:55:56,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-30 09:55:56,757 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:56,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1625804891, now seen corresponding path program 1 times [2023-08-30 09:55:56,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:56,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414802115] [2023-08-30 09:55:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:56,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:55:56,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:56,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414802115] [2023-08-30 09:55:56,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414802115] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:55:56,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750230803] [2023-08-30 09:55:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:56,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:55:56,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:55:56,819 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 09:55:56,825 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 09:55:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:56,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:55:56,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:55:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:55:56,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:55:56,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750230803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:56,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:55:56,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 09:55:56,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960827108] [2023-08-30 09:55:56,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:56,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 09:55:56,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:56,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 09:55:56,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-30 09:55:56,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 387 [2023-08-30 09:55:56,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 975 flow. Second operand has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:56,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:56,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 387 [2023-08-30 09:55:56,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:55:58,216 INFO L130 PetriNetUnfolder]: 8230/13977 cut-off events. [2023-08-30 09:55:58,216 INFO L131 PetriNetUnfolder]: For 107122/107122 co-relation queries the response was YES. [2023-08-30 09:55:58,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58890 conditions, 13977 events. 8230/13977 cut-off events. For 107122/107122 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 101469 event pairs, 2116 based on Foata normal form. 726/14697 useless extension candidates. Maximal degree in co-relation 58855. Up to 6086 conditions per place. [2023-08-30 09:55:58,466 INFO L137 encePairwiseOnDemand]: 366/387 looper letters, 187 selfloop transitions, 68 changer transitions 5/269 dead transitions. [2023-08-30 09:55:58,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 269 transitions, 2784 flow [2023-08-30 09:55:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 09:55:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 09:55:58,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1411 transitions. [2023-08-30 09:55:58,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208564045773348 [2023-08-30 09:55:58,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1411 transitions. [2023-08-30 09:55:58,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1411 transitions. [2023-08-30 09:55:58,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:55:58,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1411 transitions. [2023-08-30 09:55:58,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.57142857142858) internal successors, (1411), 7 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:58,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:58,471 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:58,471 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 975 flow. Second operand 7 states and 1411 transitions. [2023-08-30 09:55:58,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 269 transitions, 2784 flow [2023-08-30 09:55:58,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 269 transitions, 2710 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 09:55:58,527 INFO L231 Difference]: Finished difference. Result has 111 places, 151 transitions, 1896 flow [2023-08-30 09:55:58,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1896, PETRI_PLACES=111, PETRI_TRANSITIONS=151} [2023-08-30 09:55:58,527 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 34 predicate places. [2023-08-30 09:55:58,527 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 151 transitions, 1896 flow [2023-08-30 09:55:58,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:58,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:55:58,528 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] [2023-08-30 09:55:58,537 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 09:55:58,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:55:58,729 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:55:58,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:55:58,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1747543425, now seen corresponding path program 1 times [2023-08-30 09:55:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:55:58,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846954616] [2023-08-30 09:55:58,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:55:58,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:55:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:55:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 09:55:58,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:55:58,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846954616] [2023-08-30 09:55:58,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846954616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:55:58,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:55:58,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 09:55:58,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049222575] [2023-08-30 09:55:58,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:55:58,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:55:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:55:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:55:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:55:58,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 387 [2023-08-30 09:55:58,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 151 transitions, 1896 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:55:58,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:55:58,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 387 [2023-08-30 09:55:58,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:00,513 INFO L130 PetriNetUnfolder]: 10454/18663 cut-off events. [2023-08-30 09:56:00,514 INFO L131 PetriNetUnfolder]: For 172483/172483 co-relation queries the response was YES. [2023-08-30 09:56:00,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84681 conditions, 18663 events. 10454/18663 cut-off events. For 172483/172483 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 154754 event pairs, 4184 based on Foata normal form. 369/19026 useless extension candidates. Maximal degree in co-relation 84642. Up to 12233 conditions per place. [2023-08-30 09:56:00,642 INFO L137 encePairwiseOnDemand]: 375/387 looper letters, 230 selfloop transitions, 23 changer transitions 0/262 dead transitions. [2023-08-30 09:56:00,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 262 transitions, 3842 flow [2023-08-30 09:56:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:56:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:56:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-30 09:56:00,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150732127476314 [2023-08-30 09:56:00,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-30 09:56:00,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-30 09:56:00,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:00,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-30 09:56:00,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:00,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:00,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 387.0) internal successors, (1548), 4 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:00,645 INFO L175 Difference]: Start difference. First operand has 111 places, 151 transitions, 1896 flow. Second operand 3 states and 598 transitions. [2023-08-30 09:56:00,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 262 transitions, 3842 flow [2023-08-30 09:56:00,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 262 transitions, 3812 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-30 09:56:00,894 INFO L231 Difference]: Finished difference. Result has 114 places, 169 transitions, 2065 flow [2023-08-30 09:56:00,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2065, PETRI_PLACES=114, PETRI_TRANSITIONS=169} [2023-08-30 09:56:00,894 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2023-08-30 09:56:00,895 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 169 transitions, 2065 flow [2023-08-30 09:56:00,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:00,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:00,895 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] [2023-08-30 09:56:00,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-30 09:56:00,895 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:00,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:00,896 INFO L85 PathProgramCache]: Analyzing trace with hash 483801833, now seen corresponding path program 2 times [2023-08-30 09:56:00,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:00,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15171183] [2023-08-30 09:56:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:00,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:00,969 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 09:56:00,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:00,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15171183] [2023-08-30 09:56:00,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15171183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:00,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:00,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:00,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588812068] [2023-08-30 09:56:00,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:00,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:00,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:00,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:00,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:01,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:01,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 169 transitions, 2065 flow. Second operand has 7 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:01,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:01,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:01,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:02,822 INFO L130 PetriNetUnfolder]: 10492/18449 cut-off events. [2023-08-30 09:56:02,822 INFO L131 PetriNetUnfolder]: For 175218/175572 co-relation queries the response was YES. [2023-08-30 09:56:02,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90878 conditions, 18449 events. 10492/18449 cut-off events. For 175218/175572 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 149044 event pairs, 2085 based on Foata normal form. 42/18448 useless extension candidates. Maximal degree in co-relation 90837. Up to 14854 conditions per place. [2023-08-30 09:56:02,933 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 245 selfloop transitions, 38 changer transitions 0/292 dead transitions. [2023-08-30 09:56:02,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 292 transitions, 3478 flow [2023-08-30 09:56:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:56:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:56:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1693 transitions. [2023-08-30 09:56:02,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48607522250933105 [2023-08-30 09:56:02,935 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1693 transitions. [2023-08-30 09:56:02,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1693 transitions. [2023-08-30 09:56:02,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:02,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1693 transitions. [2023-08-30 09:56:02,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 188.11111111111111) internal successors, (1693), 9 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:02,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:02,939 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:02,939 INFO L175 Difference]: Start difference. First operand has 114 places, 169 transitions, 2065 flow. Second operand 9 states and 1693 transitions. [2023-08-30 09:56:02,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 292 transitions, 3478 flow [2023-08-30 09:56:03,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 292 transitions, 3426 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:56:03,079 INFO L231 Difference]: Finished difference. Result has 124 places, 183 transitions, 2409 flow [2023-08-30 09:56:03,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2409, PETRI_PLACES=124, PETRI_TRANSITIONS=183} [2023-08-30 09:56:03,080 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 47 predicate places. [2023-08-30 09:56:03,080 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 183 transitions, 2409 flow [2023-08-30 09:56:03,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:03,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:03,080 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] [2023-08-30 09:56:03,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-30 09:56:03,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:03,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:03,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1841394551, now seen corresponding path program 1 times [2023-08-30 09:56:03,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:03,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608542639] [2023-08-30 09:56:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:03,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:03,136 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 09:56:03,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:03,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608542639] [2023-08-30 09:56:03,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608542639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:03,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:03,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:03,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059006016] [2023-08-30 09:56:03,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:03,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:03,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:03,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:03,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:03,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:03,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 183 transitions, 2409 flow. Second operand has 7 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:03,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:03,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:03,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:05,344 INFO L130 PetriNetUnfolder]: 10371/18286 cut-off events. [2023-08-30 09:56:05,344 INFO L131 PetriNetUnfolder]: For 200393/200591 co-relation queries the response was YES. [2023-08-30 09:56:05,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91803 conditions, 18286 events. 10371/18286 cut-off events. For 200393/200591 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 149093 event pairs, 1776 based on Foata normal form. 87/18302 useless extension candidates. Maximal degree in co-relation 91758. Up to 14440 conditions per place. [2023-08-30 09:56:05,446 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 229 selfloop transitions, 42 changer transitions 0/280 dead transitions. [2023-08-30 09:56:05,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 280 transitions, 3523 flow [2023-08-30 09:56:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:56:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:56:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1673 transitions. [2023-08-30 09:56:05,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803330462245191 [2023-08-30 09:56:05,448 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1673 transitions. [2023-08-30 09:56:05,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1673 transitions. [2023-08-30 09:56:05,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:05,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1673 transitions. [2023-08-30 09:56:05,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.88888888888889) internal successors, (1673), 9 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:05,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:05,452 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:05,452 INFO L175 Difference]: Start difference. First operand has 124 places, 183 transitions, 2409 flow. Second operand 9 states and 1673 transitions. [2023-08-30 09:56:05,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 280 transitions, 3523 flow [2023-08-30 09:56:05,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 280 transitions, 3479 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-30 09:56:05,658 INFO L231 Difference]: Finished difference. Result has 131 places, 190 transitions, 2609 flow [2023-08-30 09:56:05,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2609, PETRI_PLACES=131, PETRI_TRANSITIONS=190} [2023-08-30 09:56:05,659 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 54 predicate places. [2023-08-30 09:56:05,659 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 190 transitions, 2609 flow [2023-08-30 09:56:05,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:05,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:05,660 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] [2023-08-30 09:56:05,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-30 09:56:05,660 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:05,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1749327605, now seen corresponding path program 1 times [2023-08-30 09:56:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:05,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47743526] [2023-08-30 09:56:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:05,712 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 09:56:05,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:05,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47743526] [2023-08-30 09:56:05,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47743526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:05,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:05,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:05,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707846022] [2023-08-30 09:56:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:05,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:05,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:05,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:05,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 190 transitions, 2609 flow. Second operand has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:05,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:05,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:05,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:07,826 INFO L130 PetriNetUnfolder]: 10344/18187 cut-off events. [2023-08-30 09:56:07,826 INFO L131 PetriNetUnfolder]: For 219069/219387 co-relation queries the response was YES. [2023-08-30 09:56:07,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92916 conditions, 18187 events. 10344/18187 cut-off events. For 219069/219387 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 147700 event pairs, 2067 based on Foata normal form. 45/18164 useless extension candidates. Maximal degree in co-relation 92869. Up to 14604 conditions per place. [2023-08-30 09:56:08,165 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 258 selfloop transitions, 46 changer transitions 0/313 dead transitions. [2023-08-30 09:56:08,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 313 transitions, 4108 flow [2023-08-30 09:56:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:56:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:56:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1862 transitions. [2023-08-30 09:56:08,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811369509043928 [2023-08-30 09:56:08,167 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1862 transitions. [2023-08-30 09:56:08,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1862 transitions. [2023-08-30 09:56:08,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:08,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1862 transitions. [2023-08-30 09:56:08,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 186.2) internal successors, (1862), 10 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:08,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:08,172 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:08,172 INFO L175 Difference]: Start difference. First operand has 131 places, 190 transitions, 2609 flow. Second operand 10 states and 1862 transitions. [2023-08-30 09:56:08,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 313 transitions, 4108 flow [2023-08-30 09:56:08,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 313 transitions, 4035 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 09:56:08,446 INFO L231 Difference]: Finished difference. Result has 138 places, 202 transitions, 2953 flow [2023-08-30 09:56:08,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2953, PETRI_PLACES=138, PETRI_TRANSITIONS=202} [2023-08-30 09:56:08,447 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 61 predicate places. [2023-08-30 09:56:08,447 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 202 transitions, 2953 flow [2023-08-30 09:56:08,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:08,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:08,447 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] [2023-08-30 09:56:08,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-30 09:56:08,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:08,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1749327606, now seen corresponding path program 1 times [2023-08-30 09:56:08,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:08,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242636943] [2023-08-30 09:56:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:08,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:08,503 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 09:56:08,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:08,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242636943] [2023-08-30 09:56:08,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242636943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:08,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:08,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:08,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071854352] [2023-08-30 09:56:08,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:08,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:08,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:08,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:08,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:08,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:08,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 202 transitions, 2953 flow. Second operand has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:08,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:08,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:08,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:10,624 INFO L130 PetriNetUnfolder]: 10370/18313 cut-off events. [2023-08-30 09:56:10,624 INFO L131 PetriNetUnfolder]: For 244007/244160 co-relation queries the response was YES. [2023-08-30 09:56:10,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94281 conditions, 18313 events. 10370/18313 cut-off events. For 244007/244160 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 149832 event pairs, 1864 based on Foata normal form. 30/18302 useless extension candidates. Maximal degree in co-relation 94231. Up to 13413 conditions per place. [2023-08-30 09:56:10,775 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 260 selfloop transitions, 62 changer transitions 0/331 dead transitions. [2023-08-30 09:56:10,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 331 transitions, 4369 flow [2023-08-30 09:56:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:56:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:56:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1872 transitions. [2023-08-30 09:56:10,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48372093023255813 [2023-08-30 09:56:10,777 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1872 transitions. [2023-08-30 09:56:10,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1872 transitions. [2023-08-30 09:56:10,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:10,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1872 transitions. [2023-08-30 09:56:10,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 187.2) internal successors, (1872), 10 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:10,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:10,781 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:10,781 INFO L175 Difference]: Start difference. First operand has 138 places, 202 transitions, 2953 flow. Second operand 10 states and 1872 transitions. [2023-08-30 09:56:10,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 331 transitions, 4369 flow [2023-08-30 09:56:11,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 331 transitions, 4317 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 09:56:11,501 INFO L231 Difference]: Finished difference. Result has 145 places, 211 transitions, 3210 flow [2023-08-30 09:56:11,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3210, PETRI_PLACES=145, PETRI_TRANSITIONS=211} [2023-08-30 09:56:11,501 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 68 predicate places. [2023-08-30 09:56:11,501 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 211 transitions, 3210 flow [2023-08-30 09:56:11,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:11,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:11,502 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] [2023-08-30 09:56:11,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-30 09:56:11,502 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:11,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1118993932, now seen corresponding path program 1 times [2023-08-30 09:56:11,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:11,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521773252] [2023-08-30 09:56:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:11,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:11,552 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 09:56:11,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:11,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521773252] [2023-08-30 09:56:11,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521773252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:11,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:11,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575336543] [2023-08-30 09:56:11,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:11,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:11,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:11,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:11,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:11,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:11,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 211 transitions, 3210 flow. Second operand has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:11,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:11,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:11,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:13,674 INFO L130 PetriNetUnfolder]: 10182/17968 cut-off events. [2023-08-30 09:56:13,674 INFO L131 PetriNetUnfolder]: For 275636/276248 co-relation queries the response was YES. [2023-08-30 09:56:13,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93694 conditions, 17968 events. 10182/17968 cut-off events. For 275636/276248 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 146157 event pairs, 1782 based on Foata normal form. 195/18113 useless extension candidates. Maximal degree in co-relation 93642. Up to 12899 conditions per place. [2023-08-30 09:56:13,825 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 264 selfloop transitions, 62 changer transitions 0/335 dead transitions. [2023-08-30 09:56:13,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 335 transitions, 4670 flow [2023-08-30 09:56:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:56:13,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:56:13,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1701 transitions. [2023-08-30 09:56:13,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2023-08-30 09:56:13,826 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1701 transitions. [2023-08-30 09:56:13,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1701 transitions. [2023-08-30 09:56:13,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:13,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1701 transitions. [2023-08-30 09:56:13,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:13,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:13,829 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:13,829 INFO L175 Difference]: Start difference. First operand has 145 places, 211 transitions, 3210 flow. Second operand 9 states and 1701 transitions. [2023-08-30 09:56:13,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 335 transitions, 4670 flow [2023-08-30 09:56:14,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 335 transitions, 4490 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-08-30 09:56:14,535 INFO L231 Difference]: Finished difference. Result has 149 places, 224 transitions, 3471 flow [2023-08-30 09:56:14,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3471, PETRI_PLACES=149, PETRI_TRANSITIONS=224} [2023-08-30 09:56:14,535 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 72 predicate places. [2023-08-30 09:56:14,535 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 224 transitions, 3471 flow [2023-08-30 09:56:14,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:14,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:14,536 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] [2023-08-30 09:56:14,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-30 09:56:14,536 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:14,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:14,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1131708086, now seen corresponding path program 1 times [2023-08-30 09:56:14,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:14,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845535344] [2023-08-30 09:56:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:14,592 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 09:56:14,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845535344] [2023-08-30 09:56:14,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845535344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:14,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:14,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:14,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737502006] [2023-08-30 09:56:14,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:14,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:14,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:14,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 224 transitions, 3471 flow. Second operand has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:14,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:14,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:14,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:16,884 INFO L130 PetriNetUnfolder]: 10044/17791 cut-off events. [2023-08-30 09:56:16,884 INFO L131 PetriNetUnfolder]: For 289521/290070 co-relation queries the response was YES. [2023-08-30 09:56:17,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95350 conditions, 17791 events. 10044/17791 cut-off events. For 289521/290070 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 145117 event pairs, 1830 based on Foata normal form. 132/17873 useless extension candidates. Maximal degree in co-relation 95296. Up to 14049 conditions per place. [2023-08-30 09:56:17,227 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 281 selfloop transitions, 51 changer transitions 0/341 dead transitions. [2023-08-30 09:56:17,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 341 transitions, 4909 flow [2023-08-30 09:56:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:56:17,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:56:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1695 transitions. [2023-08-30 09:56:17,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48664944013781225 [2023-08-30 09:56:17,229 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1695 transitions. [2023-08-30 09:56:17,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1695 transitions. [2023-08-30 09:56:17,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:17,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1695 transitions. [2023-08-30 09:56:17,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 188.33333333333334) internal successors, (1695), 9 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:17,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:17,233 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:17,233 INFO L175 Difference]: Start difference. First operand has 149 places, 224 transitions, 3471 flow. Second operand 9 states and 1695 transitions. [2023-08-30 09:56:17,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 341 transitions, 4909 flow [2023-08-30 09:56:17,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 341 transitions, 4789 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 09:56:17,925 INFO L231 Difference]: Finished difference. Result has 155 places, 231 transitions, 3602 flow [2023-08-30 09:56:17,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3602, PETRI_PLACES=155, PETRI_TRANSITIONS=231} [2023-08-30 09:56:17,925 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 78 predicate places. [2023-08-30 09:56:17,925 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 231 transitions, 3602 flow [2023-08-30 09:56:17,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.14285714285714) internal successors, (1212), 7 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:17,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:17,926 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:17,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-30 09:56:17,926 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:17,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2030157670, now seen corresponding path program 1 times [2023-08-30 09:56:17,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:17,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931856519] [2023-08-30 09:56:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:17,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:56:17,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:17,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931856519] [2023-08-30 09:56:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931856519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:17,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:17,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682933537] [2023-08-30 09:56:17,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:17,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:17,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:18,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:18,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 231 transitions, 3602 flow. Second operand has 7 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:18,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:18,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:18,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:20,344 INFO L130 PetriNetUnfolder]: 10470/18279 cut-off events. [2023-08-30 09:56:20,345 INFO L131 PetriNetUnfolder]: For 287682/288222 co-relation queries the response was YES. [2023-08-30 09:56:20,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97658 conditions, 18279 events. 10470/18279 cut-off events. For 287682/288222 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 147141 event pairs, 2078 based on Foata normal form. 57/18244 useless extension candidates. Maximal degree in co-relation 97603. Up to 15262 conditions per place. [2023-08-30 09:56:20,464 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 282 selfloop transitions, 49 changer transitions 0/338 dead transitions. [2023-08-30 09:56:20,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 338 transitions, 5032 flow [2023-08-30 09:56:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:56:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:56:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1859 transitions. [2023-08-30 09:56:20,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48036175710594314 [2023-08-30 09:56:20,465 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1859 transitions. [2023-08-30 09:56:20,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1859 transitions. [2023-08-30 09:56:20,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:20,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1859 transitions. [2023-08-30 09:56:20,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.9) internal successors, (1859), 10 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:20,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:20,468 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:20,468 INFO L175 Difference]: Start difference. First operand has 155 places, 231 transitions, 3602 flow. Second operand 10 states and 1859 transitions. [2023-08-30 09:56:20,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 338 transitions, 5032 flow [2023-08-30 09:56:21,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 338 transitions, 4920 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-30 09:56:21,074 INFO L231 Difference]: Finished difference. Result has 163 places, 238 transitions, 3854 flow [2023-08-30 09:56:21,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3854, PETRI_PLACES=163, PETRI_TRANSITIONS=238} [2023-08-30 09:56:21,074 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 86 predicate places. [2023-08-30 09:56:21,074 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 238 transitions, 3854 flow [2023-08-30 09:56:21,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:21,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:21,075 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] [2023-08-30 09:56:21,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-30 09:56:21,075 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:21,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1043837661, now seen corresponding path program 1 times [2023-08-30 09:56:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:21,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694718799] [2023-08-30 09:56:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:21,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:21,141 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 09:56:21,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:21,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694718799] [2023-08-30 09:56:21,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694718799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:21,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:21,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:56:21,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738121759] [2023-08-30 09:56:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:21,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:56:21,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:21,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:56:21,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:56:21,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:56:21,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 238 transitions, 3854 flow. Second operand has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:21,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:21,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:56:21,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:23,727 INFO L130 PetriNetUnfolder]: 9988/17669 cut-off events. [2023-08-30 09:56:23,727 INFO L131 PetriNetUnfolder]: For 297593/298331 co-relation queries the response was YES. [2023-08-30 09:56:23,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95391 conditions, 17669 events. 9988/17669 cut-off events. For 297593/298331 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 143963 event pairs, 1956 based on Foata normal form. 138/17724 useless extension candidates. Maximal degree in co-relation 95333. Up to 14099 conditions per place. [2023-08-30 09:56:23,858 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 310 selfloop transitions, 60 changer transitions 0/379 dead transitions. [2023-08-30 09:56:23,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 379 transitions, 5494 flow [2023-08-30 09:56:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:56:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:56:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2346 transitions. [2023-08-30 09:56:23,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46630888491353606 [2023-08-30 09:56:23,860 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2346 transitions. [2023-08-30 09:56:23,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2346 transitions. [2023-08-30 09:56:23,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:23,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2346 transitions. [2023-08-30 09:56:23,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 180.46153846153845) internal successors, (2346), 13 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:23,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:23,865 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:23,865 INFO L175 Difference]: Start difference. First operand has 163 places, 238 transitions, 3854 flow. Second operand 13 states and 2346 transitions. [2023-08-30 09:56:23,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 379 transitions, 5494 flow [2023-08-30 09:56:24,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 379 transitions, 5451 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 09:56:24,741 INFO L231 Difference]: Finished difference. Result has 173 places, 244 transitions, 4090 flow [2023-08-30 09:56:24,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=3811, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4090, PETRI_PLACES=173, PETRI_TRANSITIONS=244} [2023-08-30 09:56:24,741 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 96 predicate places. [2023-08-30 09:56:24,741 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 244 transitions, 4090 flow [2023-08-30 09:56:24,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:24,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:24,742 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] [2023-08-30 09:56:24,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-30 09:56:24,742 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:24,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash 45254319, now seen corresponding path program 2 times [2023-08-30 09:56:24,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:24,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429229331] [2023-08-30 09:56:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:24,816 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 09:56:24,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:24,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429229331] [2023-08-30 09:56:24,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429229331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:24,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:24,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:56:24,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894117417] [2023-08-30 09:56:24,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:24,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:56:24,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:24,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:56:24,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:56:24,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:56:24,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 244 transitions, 4090 flow. Second operand has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:24,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:24,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:56:24,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:27,337 INFO L130 PetriNetUnfolder]: 9902/17610 cut-off events. [2023-08-30 09:56:27,337 INFO L131 PetriNetUnfolder]: For 320812/321349 co-relation queries the response was YES. [2023-08-30 09:56:27,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96013 conditions, 17610 events. 9902/17610 cut-off events. For 320812/321349 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 144239 event pairs, 1935 based on Foata normal form. 105/17665 useless extension candidates. Maximal degree in co-relation 95952. Up to 14019 conditions per place. [2023-08-30 09:56:27,479 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 298 selfloop transitions, 58 changer transitions 0/365 dead transitions. [2023-08-30 09:56:27,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 365 transitions, 5527 flow [2023-08-30 09:56:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 09:56:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 09:56:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1996 transitions. [2023-08-30 09:56:27,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688747944561898 [2023-08-30 09:56:27,481 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1996 transitions. [2023-08-30 09:56:27,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1996 transitions. [2023-08-30 09:56:27,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:27,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1996 transitions. [2023-08-30 09:56:27,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 181.45454545454547) internal successors, (1996), 11 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:27,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 387.0) internal successors, (4644), 12 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:27,484 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 387.0) internal successors, (4644), 12 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:27,484 INFO L175 Difference]: Start difference. First operand has 173 places, 244 transitions, 4090 flow. Second operand 11 states and 1996 transitions. [2023-08-30 09:56:27,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 365 transitions, 5527 flow [2023-08-30 09:56:28,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 365 transitions, 5435 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-08-30 09:56:28,296 INFO L231 Difference]: Finished difference. Result has 179 places, 247 transitions, 4213 flow [2023-08-30 09:56:28,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4213, PETRI_PLACES=179, PETRI_TRANSITIONS=247} [2023-08-30 09:56:28,297 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 102 predicate places. [2023-08-30 09:56:28,297 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 247 transitions, 4213 flow [2023-08-30 09:56:28,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:28,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:28,297 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:28,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-30 09:56:28,298 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:28,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash 372507435, now seen corresponding path program 1 times [2023-08-30 09:56:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:28,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326092242] [2023-08-30 09:56:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:28,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:56:28,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:28,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326092242] [2023-08-30 09:56:28,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326092242] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:56:28,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319749951] [2023-08-30 09:56:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:28,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:56:28,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:56:28,358 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 09:56:28,361 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 09:56:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:28,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:56:28,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:56:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:56:28,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:56:28,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319749951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:28,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:56:28,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-30 09:56:28,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091489646] [2023-08-30 09:56:28,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:28,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:56:28,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:56:28,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-30 09:56:28,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 387 [2023-08-30 09:56:28,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 247 transitions, 4213 flow. Second operand has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:28,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:28,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 387 [2023-08-30 09:56:28,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:31,589 INFO L130 PetriNetUnfolder]: 11536/20336 cut-off events. [2023-08-30 09:56:31,589 INFO L131 PetriNetUnfolder]: For 400215/400692 co-relation queries the response was YES. [2023-08-30 09:56:31,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108522 conditions, 20336 events. 11536/20336 cut-off events. For 400215/400692 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 168586 event pairs, 1801 based on Foata normal form. 504/20790 useless extension candidates. Maximal degree in co-relation 108458. Up to 8429 conditions per place. [2023-08-30 09:56:31,748 INFO L137 encePairwiseOnDemand]: 362/387 looper letters, 322 selfloop transitions, 190 changer transitions 16/535 dead transitions. [2023-08-30 09:56:31,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 535 transitions, 8203 flow [2023-08-30 09:56:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:56:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:56:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2284 transitions. [2023-08-30 09:56:31,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491817398794143 [2023-08-30 09:56:31,750 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2284 transitions. [2023-08-30 09:56:31,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2284 transitions. [2023-08-30 09:56:31,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:31,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2284 transitions. [2023-08-30 09:56:31,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.33333333333334) internal successors, (2284), 12 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:31,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:31,755 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:31,755 INFO L175 Difference]: Start difference. First operand has 179 places, 247 transitions, 4213 flow. Second operand 12 states and 2284 transitions. [2023-08-30 09:56:31,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 535 transitions, 8203 flow [2023-08-30 09:56:32,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 535 transitions, 8102 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-30 09:56:32,736 INFO L231 Difference]: Finished difference. Result has 192 places, 333 transitions, 6383 flow [2023-08-30 09:56:32,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=3974, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6383, PETRI_PLACES=192, PETRI_TRANSITIONS=333} [2023-08-30 09:56:32,737 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 115 predicate places. [2023-08-30 09:56:32,737 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 333 transitions, 6383 flow [2023-08-30 09:56:32,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:32,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:32,737 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:32,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 09:56:32,942 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,SelfDestructingSolverStorable57 [2023-08-30 09:56:32,943 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:32,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1741305787, now seen corresponding path program 2 times [2023-08-30 09:56:32,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:32,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957117365] [2023-08-30 09:56:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:56:32,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:32,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957117365] [2023-08-30 09:56:32,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957117365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:32,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:32,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191223835] [2023-08-30 09:56:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:32,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:33,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:33,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 333 transitions, 6383 flow. Second operand has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:33,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:33,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:33,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:36,261 INFO L130 PetriNetUnfolder]: 11398/20053 cut-off events. [2023-08-30 09:56:36,261 INFO L131 PetriNetUnfolder]: For 448256/449108 co-relation queries the response was YES. [2023-08-30 09:56:36,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116733 conditions, 20053 events. 11398/20053 cut-off events. For 448256/449108 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 165485 event pairs, 2183 based on Foata normal form. 81/20048 useless extension candidates. Maximal degree in co-relation 116660. Up to 16894 conditions per place. [2023-08-30 09:56:36,711 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 359 selfloop transitions, 70 changer transitions 0/436 dead transitions. [2023-08-30 09:56:36,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 436 transitions, 7995 flow [2023-08-30 09:56:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:56:36,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:56:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1859 transitions. [2023-08-30 09:56:36,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48036175710594314 [2023-08-30 09:56:36,713 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1859 transitions. [2023-08-30 09:56:36,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1859 transitions. [2023-08-30 09:56:36,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:36,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1859 transitions. [2023-08-30 09:56:36,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.9) internal successors, (1859), 10 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:36,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:36,716 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:36,716 INFO L175 Difference]: Start difference. First operand has 192 places, 333 transitions, 6383 flow. Second operand 10 states and 1859 transitions. [2023-08-30 09:56:36,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 436 transitions, 7995 flow [2023-08-30 09:56:38,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 436 transitions, 7689 flow, removed 123 selfloop flow, removed 1 redundant places. [2023-08-30 09:56:38,720 INFO L231 Difference]: Finished difference. Result has 204 places, 341 transitions, 6540 flow [2023-08-30 09:56:38,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=6092, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6540, PETRI_PLACES=204, PETRI_TRANSITIONS=341} [2023-08-30 09:56:38,720 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 127 predicate places. [2023-08-30 09:56:38,721 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 341 transitions, 6540 flow [2023-08-30 09:56:38,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:38,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:38,721 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:38,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-30 09:56:38,721 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:38,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1579123196, now seen corresponding path program 1 times [2023-08-30 09:56:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:38,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031991364] [2023-08-30 09:56:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:38,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:56:38,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:38,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031991364] [2023-08-30 09:56:38,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031991364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:38,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:38,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:38,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387577820] [2023-08-30 09:56:38,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:38,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:38,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:38,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:38,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 341 transitions, 6540 flow. Second operand has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:38,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:38,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:38,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:42,242 INFO L130 PetriNetUnfolder]: 11259/19887 cut-off events. [2023-08-30 09:56:42,242 INFO L131 PetriNetUnfolder]: For 460563/460815 co-relation queries the response was YES. [2023-08-30 09:56:42,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115480 conditions, 19887 events. 11259/19887 cut-off events. For 460563/460815 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 164845 event pairs, 2051 based on Foata normal form. 111/19936 useless extension candidates. Maximal degree in co-relation 115402. Up to 16438 conditions per place. [2023-08-30 09:56:42,406 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 343 selfloop transitions, 77 changer transitions 0/427 dead transitions. [2023-08-30 09:56:42,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 427 transitions, 8024 flow [2023-08-30 09:56:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:56:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:56:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1846 transitions. [2023-08-30 09:56:42,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47700258397932815 [2023-08-30 09:56:42,408 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1846 transitions. [2023-08-30 09:56:42,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1846 transitions. [2023-08-30 09:56:42,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:42,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1846 transitions. [2023-08-30 09:56:42,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 184.6) internal successors, (1846), 10 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:42,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:42,411 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:42,411 INFO L175 Difference]: Start difference. First operand has 204 places, 341 transitions, 6540 flow. Second operand 10 states and 1846 transitions. [2023-08-30 09:56:42,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 427 transitions, 8024 flow [2023-08-30 09:56:44,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 427 transitions, 7944 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-08-30 09:56:44,307 INFO L231 Difference]: Finished difference. Result has 212 places, 349 transitions, 6904 flow [2023-08-30 09:56:44,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=6401, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6904, PETRI_PLACES=212, PETRI_TRANSITIONS=349} [2023-08-30 09:56:44,308 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 135 predicate places. [2023-08-30 09:56:44,308 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 349 transitions, 6904 flow [2023-08-30 09:56:44,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:44,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:44,308 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:44,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-30 09:56:44,309 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:44,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1344933538, now seen corresponding path program 1 times [2023-08-30 09:56:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013364529] [2023-08-30 09:56:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:56:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013364529] [2023-08-30 09:56:44,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013364529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:44,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:44,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:44,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108417053] [2023-08-30 09:56:44,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:44,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:44,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:44,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 349 transitions, 6904 flow. Second operand has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:44,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:44,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:44,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:47,849 INFO L130 PetriNetUnfolder]: 11100/19560 cut-off events. [2023-08-30 09:56:47,849 INFO L131 PetriNetUnfolder]: For 489366/489747 co-relation queries the response was YES. [2023-08-30 09:56:47,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113657 conditions, 19560 events. 11100/19560 cut-off events. For 489366/489747 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 161125 event pairs, 1859 based on Foata normal form. 180/19678 useless extension candidates. Maximal degree in co-relation 113575. Up to 15283 conditions per place. [2023-08-30 09:56:48,020 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 380 selfloop transitions, 71 changer transitions 0/458 dead transitions. [2023-08-30 09:56:48,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 458 transitions, 8405 flow [2023-08-30 09:56:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:56:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:56:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1872 transitions. [2023-08-30 09:56:48,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48372093023255813 [2023-08-30 09:56:48,022 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1872 transitions. [2023-08-30 09:56:48,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1872 transitions. [2023-08-30 09:56:48,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:48,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1872 transitions. [2023-08-30 09:56:48,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 187.2) internal successors, (1872), 10 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:48,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:48,025 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:48,025 INFO L175 Difference]: Start difference. First operand has 212 places, 349 transitions, 6904 flow. Second operand 10 states and 1872 transitions. [2023-08-30 09:56:48,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 458 transitions, 8405 flow [2023-08-30 09:56:49,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 458 transitions, 8256 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-08-30 09:56:49,998 INFO L231 Difference]: Finished difference. Result has 219 places, 350 transitions, 6813 flow [2023-08-30 09:56:49,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=6425, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6813, PETRI_PLACES=219, PETRI_TRANSITIONS=350} [2023-08-30 09:56:49,998 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 142 predicate places. [2023-08-30 09:56:49,998 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 350 transitions, 6813 flow [2023-08-30 09:56:49,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:49,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:49,999 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:49,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-30 09:56:49,999 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:50,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:50,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1310856540, now seen corresponding path program 2 times [2023-08-30 09:56:50,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:50,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703671745] [2023-08-30 09:56:50,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:50,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:56:50,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:50,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703671745] [2023-08-30 09:56:50,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703671745] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:56:50,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609951806] [2023-08-30 09:56:50,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 09:56:50,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:56:50,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:56:50,258 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 09:56:50,260 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 09:56:50,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 09:56:50,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 09:56:50,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 09:56:50,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:56:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:56:50,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 09:56:50,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609951806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:50,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 09:56:50,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-30 09:56:50,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380754604] [2023-08-30 09:56:50,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:50,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 09:56:50,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 09:56:50,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-30 09:56:50,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 387 [2023-08-30 09:56:50,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 350 transitions, 6813 flow. Second operand has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:50,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:50,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 387 [2023-08-30 09:56:50,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:56:54,328 INFO L130 PetriNetUnfolder]: 12006/21224 cut-off events. [2023-08-30 09:56:54,329 INFO L131 PetriNetUnfolder]: For 537293/537641 co-relation queries the response was YES. [2023-08-30 09:56:54,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123064 conditions, 21224 events. 12006/21224 cut-off events. For 537293/537641 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 177818 event pairs, 1964 based on Foata normal form. 203/21382 useless extension candidates. Maximal degree in co-relation 122979. Up to 7784 conditions per place. [2023-08-30 09:56:54,538 INFO L137 encePairwiseOnDemand]: 364/387 looper letters, 371 selfloop transitions, 237 changer transitions 6/621 dead transitions. [2023-08-30 09:56:54,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 621 transitions, 10927 flow [2023-08-30 09:56:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:56:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:56:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1918 transitions. [2023-08-30 09:56:54,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49560723514211885 [2023-08-30 09:56:54,540 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1918 transitions. [2023-08-30 09:56:54,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1918 transitions. [2023-08-30 09:56:54,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:56:54,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1918 transitions. [2023-08-30 09:56:54,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 191.8) internal successors, (1918), 10 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:54,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:54,543 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:54,543 INFO L175 Difference]: Start difference. First operand has 219 places, 350 transitions, 6813 flow. Second operand 10 states and 1918 transitions. [2023-08-30 09:56:54,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 621 transitions, 10927 flow [2023-08-30 09:56:57,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 621 transitions, 10818 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 09:56:57,169 INFO L231 Difference]: Finished difference. Result has 230 places, 424 transitions, 8934 flow [2023-08-30 09:56:57,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=6654, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8934, PETRI_PLACES=230, PETRI_TRANSITIONS=424} [2023-08-30 09:56:57,170 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 153 predicate places. [2023-08-30 09:56:57,170 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 424 transitions, 8934 flow [2023-08-30 09:56:57,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:57,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:56:57,171 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:56:57,176 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 09:56:57,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:56:57,373 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:56:57,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:56:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2030157669, now seen corresponding path program 1 times [2023-08-30 09:56:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:56:57,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306699080] [2023-08-30 09:56:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:56:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:56:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:56:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:56:57,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:56:57,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306699080] [2023-08-30 09:56:57,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306699080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:56:57,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:56:57,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:56:57,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463723200] [2023-08-30 09:56:57,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:56:57,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:56:57,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:56:57,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:56:57,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:56:57,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:56:57,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 424 transitions, 8934 flow. Second operand has 7 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:56:57,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:56:57,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:56:57,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:01,722 INFO L130 PetriNetUnfolder]: 11865/20875 cut-off events. [2023-08-30 09:57:01,722 INFO L131 PetriNetUnfolder]: For 566045/566534 co-relation queries the response was YES. [2023-08-30 09:57:01,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130354 conditions, 20875 events. 11865/20875 cut-off events. For 566045/566534 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 173996 event pairs, 1944 based on Foata normal form. 165/21011 useless extension candidates. Maximal degree in co-relation 130263. Up to 16648 conditions per place. [2023-08-30 09:57:01,901 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 431 selfloop transitions, 81 changer transitions 0/519 dead transitions. [2023-08-30 09:57:01,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 519 transitions, 10419 flow [2023-08-30 09:57:01,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:57:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:57:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1857 transitions. [2023-08-30 09:57:01,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47984496124031006 [2023-08-30 09:57:01,903 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1857 transitions. [2023-08-30 09:57:01,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1857 transitions. [2023-08-30 09:57:01,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:01,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1857 transitions. [2023-08-30 09:57:01,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.7) internal successors, (1857), 10 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:01,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:01,908 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:01,908 INFO L175 Difference]: Start difference. First operand has 230 places, 424 transitions, 8934 flow. Second operand 10 states and 1857 transitions. [2023-08-30 09:57:01,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 519 transitions, 10419 flow [2023-08-30 09:57:05,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 519 transitions, 10225 flow, removed 67 selfloop flow, removed 1 redundant places. [2023-08-30 09:57:05,255 INFO L231 Difference]: Finished difference. Result has 238 places, 421 transitions, 8749 flow [2023-08-30 09:57:05,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=8587, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8749, PETRI_PLACES=238, PETRI_TRANSITIONS=421} [2023-08-30 09:57:05,256 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 161 predicate places. [2023-08-30 09:57:05,256 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 421 transitions, 8749 flow [2023-08-30 09:57:05,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:05,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:57:05,256 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] [2023-08-30 09:57:05,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-30 09:57:05,256 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:57:05,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:57:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash 38664670, now seen corresponding path program 1 times [2023-08-30 09:57:05,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:57:05,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376646309] [2023-08-30 09:57:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:57:05,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:57:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:57:05,315 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 09:57:05,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:57:05,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376646309] [2023-08-30 09:57:05,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376646309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:57:05,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:57:05,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:57:05,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222455767] [2023-08-30 09:57:05,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:57:05,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:57:05,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:57:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:57:05,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:57:05,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:57:05,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 421 transitions, 8749 flow. Second operand has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:05,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:57:05,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:57:05,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:09,422 INFO L130 PetriNetUnfolder]: 11529/20495 cut-off events. [2023-08-30 09:57:09,422 INFO L131 PetriNetUnfolder]: For 597251/597569 co-relation queries the response was YES. [2023-08-30 09:57:09,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126884 conditions, 20495 events. 11529/20495 cut-off events. For 597251/597569 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 172452 event pairs, 1519 based on Foata normal form. 216/20655 useless extension candidates. Maximal degree in co-relation 126792. Up to 14736 conditions per place. [2023-08-30 09:57:09,595 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 486 selfloop transitions, 105 changer transitions 1/607 dead transitions. [2023-08-30 09:57:09,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 607 transitions, 11143 flow [2023-08-30 09:57:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 09:57:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 09:57:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2557 transitions. [2023-08-30 09:57:09,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719453672942045 [2023-08-30 09:57:09,597 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2557 transitions. [2023-08-30 09:57:09,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2557 transitions. [2023-08-30 09:57:09,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:09,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2557 transitions. [2023-08-30 09:57:09,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 182.64285714285714) internal successors, (2557), 14 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:09,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:09,602 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:09,602 INFO L175 Difference]: Start difference. First operand has 238 places, 421 transitions, 8749 flow. Second operand 14 states and 2557 transitions. [2023-08-30 09:57:09,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 607 transitions, 11143 flow [2023-08-30 09:57:12,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 607 transitions, 11038 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-08-30 09:57:12,623 INFO L231 Difference]: Finished difference. Result has 249 places, 428 transitions, 8926 flow [2023-08-30 09:57:12,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=8291, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8926, PETRI_PLACES=249, PETRI_TRANSITIONS=428} [2023-08-30 09:57:12,624 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 172 predicate places. [2023-08-30 09:57:12,624 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 428 transitions, 8926 flow [2023-08-30 09:57:12,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:12,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:57:12,625 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] [2023-08-30 09:57:12,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-30 09:57:12,625 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:57:12,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:57:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash 38664669, now seen corresponding path program 3 times [2023-08-30 09:57:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:57:12,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460788194] [2023-08-30 09:57:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:57:12,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:57:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:57:12,692 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 09:57:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:57:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460788194] [2023-08-30 09:57:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460788194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:57:12,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:57:12,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:57:12,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006009506] [2023-08-30 09:57:12,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:57:12,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:57:12,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:57:12,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:57:12,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:57:12,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:57:12,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 428 transitions, 8926 flow. Second operand has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:12,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:57:12,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:57:12,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:16,885 INFO L130 PetriNetUnfolder]: 11389/20280 cut-off events. [2023-08-30 09:57:16,886 INFO L131 PetriNetUnfolder]: For 572710/573145 co-relation queries the response was YES. [2023-08-30 09:57:16,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126181 conditions, 20280 events. 11389/20280 cut-off events. For 572710/573145 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 170448 event pairs, 1774 based on Foata normal form. 138/20359 useless extension candidates. Maximal degree in co-relation 126085. Up to 15831 conditions per place. [2023-08-30 09:57:17,057 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 465 selfloop transitions, 86 changer transitions 3/569 dead transitions. [2023-08-30 09:57:17,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 569 transitions, 10735 flow [2023-08-30 09:57:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 09:57:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 09:57:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2513 transitions. [2023-08-30 09:57:17,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46382428940568476 [2023-08-30 09:57:17,059 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2513 transitions. [2023-08-30 09:57:17,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2513 transitions. [2023-08-30 09:57:17,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:17,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2513 transitions. [2023-08-30 09:57:17,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 179.5) internal successors, (2513), 14 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:17,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:17,063 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:17,063 INFO L175 Difference]: Start difference. First operand has 249 places, 428 transitions, 8926 flow. Second operand 14 states and 2513 transitions. [2023-08-30 09:57:17,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 569 transitions, 10735 flow [2023-08-30 09:57:20,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 569 transitions, 10663 flow, removed 31 selfloop flow, removed 4 redundant places. [2023-08-30 09:57:20,012 INFO L231 Difference]: Finished difference. Result has 258 places, 420 transitions, 8786 flow [2023-08-30 09:57:20,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=8655, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8786, PETRI_PLACES=258, PETRI_TRANSITIONS=420} [2023-08-30 09:57:20,012 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 181 predicate places. [2023-08-30 09:57:20,012 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 420 transitions, 8786 flow [2023-08-30 09:57:20,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:20,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:57:20,013 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] [2023-08-30 09:57:20,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-30 09:57:20,013 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:57:20,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:57:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1719342637, now seen corresponding path program 1 times [2023-08-30 09:57:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:57:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475350326] [2023-08-30 09:57:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:57:20,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:57:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:57:20,080 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 09:57:20,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:57:20,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475350326] [2023-08-30 09:57:20,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475350326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:57:20,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:57:20,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:57:20,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885190130] [2023-08-30 09:57:20,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:57:20,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:57:20,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:57:20,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:57:20,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:57:20,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:57:20,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 420 transitions, 8786 flow. Second operand has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:20,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:57:20,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:57:20,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:24,086 INFO L130 PetriNetUnfolder]: 11556/20542 cut-off events. [2023-08-30 09:57:24,087 INFO L131 PetriNetUnfolder]: For 595832/596246 co-relation queries the response was YES. [2023-08-30 09:57:24,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128803 conditions, 20542 events. 11556/20542 cut-off events. For 595832/596246 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 172855 event pairs, 2055 based on Foata normal form. 81/20513 useless extension candidates. Maximal degree in co-relation 128706. Up to 16985 conditions per place. [2023-08-30 09:57:24,523 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 471 selfloop transitions, 74 changer transitions 1/561 dead transitions. [2023-08-30 09:57:24,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 561 transitions, 10999 flow [2023-08-30 09:57:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:57:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:57:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2340 transitions. [2023-08-30 09:57:24,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2023-08-30 09:57:24,525 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2340 transitions. [2023-08-30 09:57:24,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2340 transitions. [2023-08-30 09:57:24,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:24,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2340 transitions. [2023-08-30 09:57:24,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 180.0) internal successors, (2340), 13 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:24,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:24,529 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:24,529 INFO L175 Difference]: Start difference. First operand has 258 places, 420 transitions, 8786 flow. Second operand 13 states and 2340 transitions. [2023-08-30 09:57:24,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 561 transitions, 10999 flow [2023-08-30 09:57:27,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 561 transitions, 10878 flow, removed 20 selfloop flow, removed 8 redundant places. [2023-08-30 09:57:27,746 INFO L231 Difference]: Finished difference. Result has 265 places, 428 transitions, 9091 flow [2023-08-30 09:57:27,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=8669, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9091, PETRI_PLACES=265, PETRI_TRANSITIONS=428} [2023-08-30 09:57:27,747 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 188 predicate places. [2023-08-30 09:57:27,747 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 428 transitions, 9091 flow [2023-08-30 09:57:27,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:27,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:57:27,748 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] [2023-08-30 09:57:27,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-08-30 09:57:27,748 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:57:27,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:57:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash 366865919, now seen corresponding path program 2 times [2023-08-30 09:57:27,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:57:27,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928881794] [2023-08-30 09:57:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:57:27,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:57:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:57:27,810 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 09:57:27,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:57:27,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928881794] [2023-08-30 09:57:27,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928881794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:57:27,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:57:27,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:57:27,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532407932] [2023-08-30 09:57:27,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:57:27,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:57:27,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:57:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:57:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:57:27,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:57:27,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 428 transitions, 9091 flow. Second operand has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:27,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:57:27,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:57:27,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:31,899 INFO L130 PetriNetUnfolder]: 11707/20775 cut-off events. [2023-08-30 09:57:31,899 INFO L131 PetriNetUnfolder]: For 627808/628243 co-relation queries the response was YES. [2023-08-30 09:57:32,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131635 conditions, 20775 events. 11707/20775 cut-off events. For 627808/628243 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 174619 event pairs, 1984 based on Foata normal form. 180/20890 useless extension candidates. Maximal degree in co-relation 131536. Up to 15847 conditions per place. [2023-08-30 09:57:32,336 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 487 selfloop transitions, 122 changer transitions 7/631 dead transitions. [2023-08-30 09:57:32,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 631 transitions, 12134 flow [2023-08-30 09:57:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 09:57:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 09:57:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2711 transitions. [2023-08-30 09:57:32,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670111972437554 [2023-08-30 09:57:32,338 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2711 transitions. [2023-08-30 09:57:32,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2711 transitions. [2023-08-30 09:57:32,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:32,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2711 transitions. [2023-08-30 09:57:32,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 180.73333333333332) internal successors, (2711), 15 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:32,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 387.0) internal successors, (6192), 16 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:32,344 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 387.0) internal successors, (6192), 16 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:32,344 INFO L175 Difference]: Start difference. First operand has 265 places, 428 transitions, 9091 flow. Second operand 15 states and 2711 transitions. [2023-08-30 09:57:32,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 631 transitions, 12134 flow [2023-08-30 09:57:35,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 631 transitions, 12021 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-08-30 09:57:35,806 INFO L231 Difference]: Finished difference. Result has 279 places, 458 transitions, 9928 flow [2023-08-30 09:57:35,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=8892, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9928, PETRI_PLACES=279, PETRI_TRANSITIONS=458} [2023-08-30 09:57:35,807 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2023-08-30 09:57:35,807 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 458 transitions, 9928 flow [2023-08-30 09:57:35,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:35,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:57:35,807 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:57:35,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-30 09:57:35,808 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:57:35,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:57:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1639933231, now seen corresponding path program 1 times [2023-08-30 09:57:35,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:57:35,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131285395] [2023-08-30 09:57:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:57:35,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:57:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:57:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:57:35,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:57:35,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131285395] [2023-08-30 09:57:35,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131285395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:57:35,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:57:35,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:57:35,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722101308] [2023-08-30 09:57:35,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:57:35,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:57:35,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:57:35,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:57:35,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:57:35,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:57:35,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 458 transitions, 9928 flow. Second operand has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:35,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:57:35,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:57:35,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:40,285 INFO L130 PetriNetUnfolder]: 11882/20913 cut-off events. [2023-08-30 09:57:40,285 INFO L131 PetriNetUnfolder]: For 654012/654378 co-relation queries the response was YES. [2023-08-30 09:57:40,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135521 conditions, 20913 events. 11882/20913 cut-off events. For 654012/654378 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 174327 event pairs, 2016 based on Foata normal form. 117/20971 useless extension candidates. Maximal degree in co-relation 135416. Up to 16980 conditions per place. [2023-08-30 09:57:40,505 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 464 selfloop transitions, 86 changer transitions 0/557 dead transitions. [2023-08-30 09:57:40,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 557 transitions, 11791 flow [2023-08-30 09:57:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 09:57:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 09:57:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2019 transitions. [2023-08-30 09:57:40,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47427766032417196 [2023-08-30 09:57:40,508 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2019 transitions. [2023-08-30 09:57:40,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2019 transitions. [2023-08-30 09:57:40,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:40,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2019 transitions. [2023-08-30 09:57:40,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 183.54545454545453) internal successors, (2019), 11 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:40,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 387.0) internal successors, (4644), 12 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:40,513 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 387.0) internal successors, (4644), 12 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:40,513 INFO L175 Difference]: Start difference. First operand has 279 places, 458 transitions, 9928 flow. Second operand 11 states and 2019 transitions. [2023-08-30 09:57:40,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 557 transitions, 11791 flow [2023-08-30 09:57:44,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 557 transitions, 11603 flow, removed 63 selfloop flow, removed 4 redundant places. [2023-08-30 09:57:44,510 INFO L231 Difference]: Finished difference. Result has 288 places, 467 transitions, 10191 flow [2023-08-30 09:57:44,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=9692, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10191, PETRI_PLACES=288, PETRI_TRANSITIONS=467} [2023-08-30 09:57:44,511 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 211 predicate places. [2023-08-30 09:57:44,511 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 467 transitions, 10191 flow [2023-08-30 09:57:44,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:44,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:57:44,511 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:57:44,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-30 09:57:44,512 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:57:44,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:57:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash 707778707, now seen corresponding path program 2 times [2023-08-30 09:57:44,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:57:44,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072145248] [2023-08-30 09:57:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:57:44,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:57:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:57:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:57:44,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:57:44,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072145248] [2023-08-30 09:57:44,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072145248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:57:44,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:57:44,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:57:44,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475467061] [2023-08-30 09:57:44,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:57:44,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:57:44,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:57:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:57:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:57:44,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:57:44,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 467 transitions, 10191 flow. Second operand has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:44,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:57:44,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:57:44,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:49,117 INFO L130 PetriNetUnfolder]: 11884/20963 cut-off events. [2023-08-30 09:57:49,117 INFO L131 PetriNetUnfolder]: For 685408/685495 co-relation queries the response was YES. [2023-08-30 09:57:49,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136153 conditions, 20963 events. 11884/20963 cut-off events. For 685408/685495 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 175334 event pairs, 2010 based on Foata normal form. 18/20922 useless extension candidates. Maximal degree in co-relation 136045. Up to 17083 conditions per place. [2023-08-30 09:57:49,364 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 466 selfloop transitions, 80 changer transitions 0/553 dead transitions. [2023-08-30 09:57:49,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 553 transitions, 11816 flow [2023-08-30 09:57:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 09:57:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 09:57:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1843 transitions. [2023-08-30 09:57:49,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47622739018087856 [2023-08-30 09:57:49,369 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1843 transitions. [2023-08-30 09:57:49,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1843 transitions. [2023-08-30 09:57:49,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:49,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1843 transitions. [2023-08-30 09:57:49,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 184.3) internal successors, (1843), 10 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:49,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:49,373 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 387.0) internal successors, (4257), 11 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:49,373 INFO L175 Difference]: Start difference. First operand has 288 places, 467 transitions, 10191 flow. Second operand 10 states and 1843 transitions. [2023-08-30 09:57:49,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 553 transitions, 11816 flow [2023-08-30 09:57:53,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 553 transitions, 11754 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-08-30 09:57:53,392 INFO L231 Difference]: Finished difference. Result has 297 places, 470 transitions, 10410 flow [2023-08-30 09:57:53,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=10082, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10410, PETRI_PLACES=297, PETRI_TRANSITIONS=470} [2023-08-30 09:57:53,393 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 220 predicate places. [2023-08-30 09:57:53,393 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 470 transitions, 10410 flow [2023-08-30 09:57:53,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:53,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:57:53,393 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:57:53,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-30 09:57:53,393 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:57:53,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:57:53,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1721836284, now seen corresponding path program 1 times [2023-08-30 09:57:53,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:57:53,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682683567] [2023-08-30 09:57:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:57:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:57:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:57:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:57:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:57:53,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682683567] [2023-08-30 09:57:53,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682683567] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:57:53,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585982841] [2023-08-30 09:57:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:57:53,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:57:53,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:57:53,448 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:57:53,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 09:57:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:57:53,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 09:57:53,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:57:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:57:53,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:57:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:57:53,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585982841] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:57:53,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:57:53,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 09:57:53,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859364798] [2023-08-30 09:57:53,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:57:53,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 09:57:53,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:57:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 09:57:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-30 09:57:53,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:57:53,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 470 transitions, 10410 flow. Second operand has 14 states, 14 states have (on average 174.21428571428572) internal successors, (2439), 14 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:53,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:57:53,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:57:53,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:57:58,293 INFO L130 PetriNetUnfolder]: 11514/20489 cut-off events. [2023-08-30 09:57:58,293 INFO L131 PetriNetUnfolder]: For 734486/734927 co-relation queries the response was YES. [2023-08-30 09:57:58,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136157 conditions, 20489 events. 11514/20489 cut-off events. For 734486/734927 co-relation queries the response was YES. Maximal size of possible extension queue 1034. Compared 172586 event pairs, 1738 based on Foata normal form. 141/20559 useless extension candidates. Maximal degree in co-relation 136044. Up to 15418 conditions per place. [2023-08-30 09:57:58,770 INFO L137 encePairwiseOnDemand]: 370/387 looper letters, 496 selfloop transitions, 121 changer transitions 0/633 dead transitions. [2023-08-30 09:57:58,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 633 transitions, 12674 flow [2023-08-30 09:57:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 09:57:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 09:57:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3117 transitions. [2023-08-30 09:57:58,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737802097583219 [2023-08-30 09:57:58,773 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3117 transitions. [2023-08-30 09:57:58,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3117 transitions. [2023-08-30 09:57:58,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:57:58,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3117 transitions. [2023-08-30 09:57:58,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 183.35294117647058) internal successors, (3117), 17 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:58,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 387.0) internal successors, (6966), 18 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:58,781 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 387.0) internal successors, (6966), 18 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:57:58,781 INFO L175 Difference]: Start difference. First operand has 297 places, 470 transitions, 10410 flow. Second operand 17 states and 3117 transitions. [2023-08-30 09:57:58,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 633 transitions, 12674 flow [2023-08-30 09:58:02,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 633 transitions, 12558 flow, removed 27 selfloop flow, removed 5 redundant places. [2023-08-30 09:58:02,461 INFO L231 Difference]: Finished difference. Result has 309 places, 471 transitions, 10569 flow [2023-08-30 09:58:02,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=10246, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10569, PETRI_PLACES=309, PETRI_TRANSITIONS=471} [2023-08-30 09:58:02,462 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 232 predicate places. [2023-08-30 09:58:02,462 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 471 transitions, 10569 flow [2023-08-30 09:58:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 174.21428571428572) internal successors, (2439), 14 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:02,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:58:02,462 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 09:58:02,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 09:58:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:58:02,663 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:58:02,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:58:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1169980520, now seen corresponding path program 1 times [2023-08-30 09:58:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:58:02,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230674565] [2023-08-30 09:58:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:58:02,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:58:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:58:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:58:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:58:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230674565] [2023-08-30 09:58:02,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230674565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:58:02,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:58:02,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 09:58:02,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711814726] [2023-08-30 09:58:02,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:58:02,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 09:58:02,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:58:02,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 09:58:02,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 09:58:02,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 387 [2023-08-30 09:58:02,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 471 transitions, 10569 flow. Second operand has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:02,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:58:02,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 387 [2023-08-30 09:58:02,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:58:07,252 INFO L130 PetriNetUnfolder]: 11903/20997 cut-off events. [2023-08-30 09:58:07,253 INFO L131 PetriNetUnfolder]: For 752142/752607 co-relation queries the response was YES. [2023-08-30 09:58:07,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139085 conditions, 20997 events. 11903/20997 cut-off events. For 752142/752607 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 175592 event pairs, 1989 based on Foata normal form. 150/21121 useless extension candidates. Maximal degree in co-relation 138971. Up to 17165 conditions per place. [2023-08-30 09:58:07,476 INFO L137 encePairwiseOnDemand]: 370/387 looper letters, 459 selfloop transitions, 80 changer transitions 0/546 dead transitions. [2023-08-30 09:58:07,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 546 transitions, 12111 flow [2023-08-30 09:58:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 09:58:07,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 09:58:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1664 transitions. [2023-08-30 09:58:07,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777490668963537 [2023-08-30 09:58:07,478 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1664 transitions. [2023-08-30 09:58:07,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1664 transitions. [2023-08-30 09:58:07,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:58:07,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1664 transitions. [2023-08-30 09:58:07,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 184.88888888888889) internal successors, (1664), 9 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:07,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:07,480 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 387.0) internal successors, (3870), 10 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:07,480 INFO L175 Difference]: Start difference. First operand has 309 places, 471 transitions, 10569 flow. Second operand 9 states and 1664 transitions. [2023-08-30 09:58:07,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 546 transitions, 12111 flow [2023-08-30 09:58:12,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 546 transitions, 11628 flow, removed 46 selfloop flow, removed 15 redundant places. [2023-08-30 09:58:12,031 INFO L231 Difference]: Finished difference. Result has 305 places, 474 transitions, 10352 flow [2023-08-30 09:58:12,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=10033, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10352, PETRI_PLACES=305, PETRI_TRANSITIONS=474} [2023-08-30 09:58:12,031 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 228 predicate places. [2023-08-30 09:58:12,031 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 474 transitions, 10352 flow [2023-08-30 09:58:12,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:12,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:58:12,032 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 09:58:12,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-08-30 09:58:12,032 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:58:12,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:58:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash -156846374, now seen corresponding path program 1 times [2023-08-30 09:58:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:58:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177649459] [2023-08-30 09:58:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:58:12,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:58:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:58:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:58:12,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:58:12,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177649459] [2023-08-30 09:58:12,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177649459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:58:12,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153938906] [2023-08-30 09:58:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:58:12,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:58:12,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:58:12,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:58:12,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 09:58:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:58:12,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:58:12,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:58:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:58:12,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:58:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:58:12,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153938906] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:58:12,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:58:12,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-08-30 09:58:12,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494869870] [2023-08-30 09:58:12,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:58:12,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 09:58:12,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:58:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 09:58:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-30 09:58:12,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 387 [2023-08-30 09:58:12,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 474 transitions, 10352 flow. Second operand has 14 states, 14 states have (on average 169.85714285714286) internal successors, (2378), 14 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:12,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:58:12,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 387 [2023-08-30 09:58:12,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:58:17,814 INFO L130 PetriNetUnfolder]: 12050/21219 cut-off events. [2023-08-30 09:58:17,814 INFO L131 PetriNetUnfolder]: For 816777/816987 co-relation queries the response was YES. [2023-08-30 09:58:17,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134644 conditions, 21219 events. 12050/21219 cut-off events. For 816777/816987 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 177041 event pairs, 1068 based on Foata normal form. 396/21559 useless extension candidates. Maximal degree in co-relation 134528. Up to 6477 conditions per place. [2023-08-30 09:58:18,018 INFO L137 encePairwiseOnDemand]: 363/387 looper letters, 497 selfloop transitions, 304 changer transitions 59/867 dead transitions. [2023-08-30 09:58:18,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 867 transitions, 15104 flow [2023-08-30 09:58:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 09:58:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 09:58:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6210 transitions. [2023-08-30 09:58:18,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2023-08-30 09:58:18,023 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 6210 transitions. [2023-08-30 09:58:18,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 6210 transitions. [2023-08-30 09:58:18,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:58:18,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 6210 transitions. [2023-08-30 09:58:18,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 177.42857142857142) internal successors, (6210), 35 states have internal predecessors, (6210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:18,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 387.0) internal successors, (13932), 36 states have internal predecessors, (13932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:18,038 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 387.0) internal successors, (13932), 36 states have internal predecessors, (13932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:18,038 INFO L175 Difference]: Start difference. First operand has 305 places, 474 transitions, 10352 flow. Second operand 35 states and 6210 transitions. [2023-08-30 09:58:18,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 867 transitions, 15104 flow [2023-08-30 09:58:22,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 867 transitions, 14964 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-08-30 09:58:22,572 INFO L231 Difference]: Finished difference. Result has 342 places, 504 transitions, 11646 flow [2023-08-30 09:58:22,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=9541, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=11646, PETRI_PLACES=342, PETRI_TRANSITIONS=504} [2023-08-30 09:58:22,572 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 265 predicate places. [2023-08-30 09:58:22,573 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 504 transitions, 11646 flow [2023-08-30 09:58:22,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 169.85714285714286) internal successors, (2378), 14 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:22,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:58:22,573 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 09:58:22,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 09:58:22,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2023-08-30 09:58:22,778 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:58:22,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:58:22,779 INFO L85 PathProgramCache]: Analyzing trace with hash 391128439, now seen corresponding path program 1 times [2023-08-30 09:58:22,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:58:22,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808608000] [2023-08-30 09:58:22,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:58:22,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:58:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:58:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:58:22,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:58:22,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808608000] [2023-08-30 09:58:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808608000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:58:22,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:58:22,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:58:22,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679014907] [2023-08-30 09:58:22,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:58:22,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:58:22,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:58:22,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:58:22,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:58:22,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:58:22,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 504 transitions, 11646 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:22,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:58:22,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:58:22,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:58:27,946 INFO L130 PetriNetUnfolder]: 11856/20962 cut-off events. [2023-08-30 09:58:27,947 INFO L131 PetriNetUnfolder]: For 822683/822989 co-relation queries the response was YES. [2023-08-30 09:58:28,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141948 conditions, 20962 events. 11856/20962 cut-off events. For 822683/822989 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 175791 event pairs, 2129 based on Foata normal form. 102/21005 useless extension candidates. Maximal degree in co-relation 141822. Up to 17834 conditions per place. [2023-08-30 09:58:28,248 INFO L137 encePairwiseOnDemand]: 366/387 looper letters, 529 selfloop transitions, 81 changer transitions 0/617 dead transitions. [2023-08-30 09:58:28,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 617 transitions, 13761 flow [2023-08-30 09:58:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:58:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:58:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2325 transitions. [2023-08-30 09:58:28,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46213476446034585 [2023-08-30 09:58:28,250 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2325 transitions. [2023-08-30 09:58:28,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2325 transitions. [2023-08-30 09:58:28,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:58:28,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2325 transitions. [2023-08-30 09:58:28,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 178.84615384615384) internal successors, (2325), 13 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:28,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:28,254 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:28,254 INFO L175 Difference]: Start difference. First operand has 342 places, 504 transitions, 11646 flow. Second operand 13 states and 2325 transitions. [2023-08-30 09:58:28,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 617 transitions, 13761 flow [2023-08-30 09:58:34,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 617 transitions, 13208 flow, removed 225 selfloop flow, removed 10 redundant places. [2023-08-30 09:58:34,554 INFO L231 Difference]: Finished difference. Result has 346 places, 513 transitions, 11572 flow [2023-08-30 09:58:34,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=11109, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11572, PETRI_PLACES=346, PETRI_TRANSITIONS=513} [2023-08-30 09:58:34,555 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 269 predicate places. [2023-08-30 09:58:34,555 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 513 transitions, 11572 flow [2023-08-30 09:58:34,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:34,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:58:34,555 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 09:58:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-08-30 09:58:34,556 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:58:34,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:58:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1536231115, now seen corresponding path program 2 times [2023-08-30 09:58:34,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:58:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046151112] [2023-08-30 09:58:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:58:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:58:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:58:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:58:34,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:58:34,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046151112] [2023-08-30 09:58:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046151112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:58:34,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:58:34,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:58:34,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062801897] [2023-08-30 09:58:34,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:58:34,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:58:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:58:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:58:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:58:34,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:58:34,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 513 transitions, 11572 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:34,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:58:34,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:58:34,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:58:39,942 INFO L130 PetriNetUnfolder]: 11949/21133 cut-off events. [2023-08-30 09:58:39,942 INFO L131 PetriNetUnfolder]: For 821444/821561 co-relation queries the response was YES. [2023-08-30 09:58:40,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140051 conditions, 21133 events. 11949/21133 cut-off events. For 821444/821561 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 177438 event pairs, 2133 based on Foata normal form. 165/21239 useless extension candidates. Maximal degree in co-relation 139926. Up to 16790 conditions per place. [2023-08-30 09:58:40,202 INFO L137 encePairwiseOnDemand]: 365/387 looper letters, 527 selfloop transitions, 123 changer transitions 2/659 dead transitions. [2023-08-30 09:58:40,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 659 transitions, 14109 flow [2023-08-30 09:58:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 09:58:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 09:58:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2863 transitions. [2023-08-30 09:58:40,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46237080103359174 [2023-08-30 09:58:40,204 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2863 transitions. [2023-08-30 09:58:40,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2863 transitions. [2023-08-30 09:58:40,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:58:40,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2863 transitions. [2023-08-30 09:58:40,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 178.9375) internal successors, (2863), 16 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:40,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 387.0) internal successors, (6579), 17 states have internal predecessors, (6579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:40,208 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 387.0) internal successors, (6579), 17 states have internal predecessors, (6579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:40,208 INFO L175 Difference]: Start difference. First operand has 346 places, 513 transitions, 11572 flow. Second operand 16 states and 2863 transitions. [2023-08-30 09:58:40,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 659 transitions, 14109 flow [2023-08-30 09:58:45,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 659 transitions, 13987 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-08-30 09:58:45,805 INFO L231 Difference]: Finished difference. Result has 355 places, 523 transitions, 12163 flow [2023-08-30 09:58:45,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=11106, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12163, PETRI_PLACES=355, PETRI_TRANSITIONS=523} [2023-08-30 09:58:45,805 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 278 predicate places. [2023-08-30 09:58:45,805 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 523 transitions, 12163 flow [2023-08-30 09:58:45,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:45,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:58:45,806 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 09:58:45,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-08-30 09:58:45,806 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:58:45,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:58:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1705441829, now seen corresponding path program 1 times [2023-08-30 09:58:45,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:58:45,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279398827] [2023-08-30 09:58:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:58:45,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:58:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:58:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:58:45,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:58:45,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279398827] [2023-08-30 09:58:45,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279398827] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:58:45,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475300613] [2023-08-30 09:58:45,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:58:45,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:58:45,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:58:45,921 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:58:45,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 09:58:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:58:46,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:58:46,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:58:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:58:46,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:58:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:58:46,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475300613] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:58:46,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:58:46,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 09:58:46,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141341689] [2023-08-30 09:58:46,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:58:46,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 09:58:46,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:58:46,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 09:58:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-30 09:58:46,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:58:46,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 523 transitions, 12163 flow. Second operand has 16 states, 16 states have (on average 170.0625) internal successors, (2721), 16 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:46,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:58:46,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:58:46,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:58:52,309 INFO L130 PetriNetUnfolder]: 12732/22465 cut-off events. [2023-08-30 09:58:52,309 INFO L131 PetriNetUnfolder]: For 954164/954278 co-relation queries the response was YES. [2023-08-30 09:58:52,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152767 conditions, 22465 events. 12732/22465 cut-off events. For 954164/954278 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 189901 event pairs, 1413 based on Foata normal form. 216/22661 useless extension candidates. Maximal degree in co-relation 152637. Up to 10865 conditions per place. [2023-08-30 09:58:52,593 INFO L137 encePairwiseOnDemand]: 364/387 looper letters, 541 selfloop transitions, 317 changer transitions 8/873 dead transitions. [2023-08-30 09:58:52,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 873 transitions, 17499 flow [2023-08-30 09:58:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 09:58:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 09:58:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5695 transitions. [2023-08-30 09:58:52,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45986757105943155 [2023-08-30 09:58:52,597 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5695 transitions. [2023-08-30 09:58:52,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5695 transitions. [2023-08-30 09:58:52,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:58:52,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5695 transitions. [2023-08-30 09:58:52,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 177.96875) internal successors, (5695), 32 states have internal predecessors, (5695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:52,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 387.0) internal successors, (12771), 33 states have internal predecessors, (12771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:52,609 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 387.0) internal successors, (12771), 33 states have internal predecessors, (12771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:58:52,610 INFO L175 Difference]: Start difference. First operand has 355 places, 523 transitions, 12163 flow. Second operand 32 states and 5695 transitions. [2023-08-30 09:58:52,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 873 transitions, 17499 flow [2023-08-30 09:59:00,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 873 transitions, 17295 flow, removed 63 selfloop flow, removed 5 redundant places. [2023-08-30 09:59:00,347 INFO L231 Difference]: Finished difference. Result has 391 places, 583 transitions, 14635 flow [2023-08-30 09:59:00,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=11978, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=14635, PETRI_PLACES=391, PETRI_TRANSITIONS=583} [2023-08-30 09:59:00,348 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 314 predicate places. [2023-08-30 09:59:00,348 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 583 transitions, 14635 flow [2023-08-30 09:59:00,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 170.0625) internal successors, (2721), 16 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:00,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:00,348 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 09:59:00,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 09:59:00,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:00,549 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:59:00,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1586111604, now seen corresponding path program 1 times [2023-08-30 09:59:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:00,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875804439] [2023-08-30 09:59:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:00,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:59:00,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:00,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875804439] [2023-08-30 09:59:00,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875804439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:00,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:00,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:59:00,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141542299] [2023-08-30 09:59:00,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:00,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:00,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:00,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:00,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:59:00,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:59:00,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 583 transitions, 14635 flow. Second operand has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:00,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:00,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:59:00,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:06,596 INFO L130 PetriNetUnfolder]: 12885/22666 cut-off events. [2023-08-30 09:59:06,596 INFO L131 PetriNetUnfolder]: For 1018592/1018796 co-relation queries the response was YES. [2023-08-30 09:59:06,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163403 conditions, 22666 events. 12885/22666 cut-off events. For 1018592/1018796 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 191149 event pairs, 2366 based on Foata normal form. 108/22742 useless extension candidates. Maximal degree in co-relation 163263. Up to 19361 conditions per place. [2023-08-30 09:59:06,984 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 579 selfloop transitions, 93 changer transitions 0/679 dead transitions. [2023-08-30 09:59:06,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 679 transitions, 16740 flow [2023-08-30 09:59:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 09:59:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 09:59:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2149 transitions. [2023-08-30 09:59:06,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46274763135228253 [2023-08-30 09:59:06,986 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2149 transitions. [2023-08-30 09:59:06,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2149 transitions. [2023-08-30 09:59:06,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:06,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2149 transitions. [2023-08-30 09:59:06,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.08333333333334) internal successors, (2149), 12 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:06,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:06,990 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:06,990 INFO L175 Difference]: Start difference. First operand has 391 places, 583 transitions, 14635 flow. Second operand 12 states and 2149 transitions. [2023-08-30 09:59:06,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 679 transitions, 16740 flow [2023-08-30 09:59:15,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 679 transitions, 16427 flow, removed 138 selfloop flow, removed 9 redundant places. [2023-08-30 09:59:15,705 INFO L231 Difference]: Finished difference. Result has 395 places, 589 transitions, 14724 flow [2023-08-30 09:59:15,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14322, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14724, PETRI_PLACES=395, PETRI_TRANSITIONS=589} [2023-08-30 09:59:15,706 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 318 predicate places. [2023-08-30 09:59:15,706 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 589 transitions, 14724 flow [2023-08-30 09:59:15,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:15,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:15,706 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 09:59:15,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-08-30 09:59:15,706 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:59:15,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1012727275, now seen corresponding path program 1 times [2023-08-30 09:59:15,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:15,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747204548] [2023-08-30 09:59:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:15,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:59:15,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:15,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747204548] [2023-08-30 09:59:15,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747204548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:15,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:15,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:59:15,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795887601] [2023-08-30 09:59:15,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:15,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:15,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:15,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:59:15,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:59:15,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 589 transitions, 14724 flow. Second operand has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:15,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:15,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:59:15,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:22,066 INFO L130 PetriNetUnfolder]: 12971/22779 cut-off events. [2023-08-30 09:59:22,067 INFO L131 PetriNetUnfolder]: For 1065468/1065666 co-relation queries the response was YES. [2023-08-30 09:59:22,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162243 conditions, 22779 events. 12971/22779 cut-off events. For 1065468/1065666 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 191997 event pairs, 2151 based on Foata normal form. 165/22915 useless extension candidates. Maximal degree in co-relation 162101. Up to 18480 conditions per place. [2023-08-30 09:59:22,373 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 627 selfloop transitions, 75 changer transitions 0/709 dead transitions. [2023-08-30 09:59:22,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 709 transitions, 16687 flow [2023-08-30 09:59:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:59:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:59:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2353 transitions. [2023-08-30 09:59:22,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2023-08-30 09:59:22,375 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2353 transitions. [2023-08-30 09:59:22,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2353 transitions. [2023-08-30 09:59:22,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:22,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2353 transitions. [2023-08-30 09:59:22,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:22,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:22,378 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:22,379 INFO L175 Difference]: Start difference. First operand has 395 places, 589 transitions, 14724 flow. Second operand 13 states and 2353 transitions. [2023-08-30 09:59:22,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 709 transitions, 16687 flow [2023-08-30 09:59:30,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 709 transitions, 16536 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-08-30 09:59:30,342 INFO L231 Difference]: Finished difference. Result has 403 places, 581 transitions, 14411 flow [2023-08-30 09:59:30,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13909, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14411, PETRI_PLACES=403, PETRI_TRANSITIONS=581} [2023-08-30 09:59:30,343 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 326 predicate places. [2023-08-30 09:59:30,343 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 581 transitions, 14411 flow [2023-08-30 09:59:30,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:30,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:30,343 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 09:59:30,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-08-30 09:59:30,343 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:59:30,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1012727276, now seen corresponding path program 2 times [2023-08-30 09:59:30,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:30,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307811934] [2023-08-30 09:59:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:59:30,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:30,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307811934] [2023-08-30 09:59:30,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307811934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:30,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:30,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:59:30,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332778559] [2023-08-30 09:59:30,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:30,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:30,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:30,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:30,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:59:30,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:59:30,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 581 transitions, 14411 flow. Second operand has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:30,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:30,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:59:30,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:36,552 INFO L130 PetriNetUnfolder]: 12687/22294 cut-off events. [2023-08-30 09:59:36,552 INFO L131 PetriNetUnfolder]: For 978422/978620 co-relation queries the response was YES. [2023-08-30 09:59:36,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157569 conditions, 22294 events. 12687/22294 cut-off events. For 978422/978620 co-relation queries the response was YES. Maximal size of possible extension queue 1095. Compared 187012 event pairs, 2244 based on Foata normal form. 198/22466 useless extension candidates. Maximal degree in co-relation 157425. Up to 18071 conditions per place. [2023-08-30 09:59:36,862 INFO L137 encePairwiseOnDemand]: 366/387 looper letters, 574 selfloop transitions, 110 changer transitions 3/694 dead transitions. [2023-08-30 09:59:36,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 694 transitions, 16274 flow [2023-08-30 09:59:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 09:59:36,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 09:59:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2847 transitions. [2023-08-30 09:59:36,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45978682170542634 [2023-08-30 09:59:36,864 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2847 transitions. [2023-08-30 09:59:36,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2847 transitions. [2023-08-30 09:59:36,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:36,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2847 transitions. [2023-08-30 09:59:36,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 177.9375) internal successors, (2847), 16 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:36,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 387.0) internal successors, (6579), 17 states have internal predecessors, (6579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:36,869 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 387.0) internal successors, (6579), 17 states have internal predecessors, (6579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:36,869 INFO L175 Difference]: Start difference. First operand has 403 places, 581 transitions, 14411 flow. Second operand 16 states and 2847 transitions. [2023-08-30 09:59:36,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 694 transitions, 16274 flow [2023-08-30 09:59:44,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 694 transitions, 16131 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-08-30 09:59:44,441 INFO L231 Difference]: Finished difference. Result has 411 places, 570 transitions, 14199 flow [2023-08-30 09:59:44,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13713, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=14199, PETRI_PLACES=411, PETRI_TRANSITIONS=570} [2023-08-30 09:59:44,442 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 334 predicate places. [2023-08-30 09:59:44,442 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 570 transitions, 14199 flow [2023-08-30 09:59:44,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:44,443 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 09:59:44,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-08-30 09:59:44,443 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:59:44,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1720803865, now seen corresponding path program 2 times [2023-08-30 09:59:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:44,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309473339] [2023-08-30 09:59:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:44,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 09:59:44,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:44,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309473339] [2023-08-30 09:59:44,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309473339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:59:44,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:59:44,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 09:59:44,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312615894] [2023-08-30 09:59:44,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:59:44,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 09:59:44,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 09:59:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 09:59:44,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:59:44,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 570 transitions, 14199 flow. Second operand has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:44,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:44,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:59:44,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:59:50,851 INFO L130 PetriNetUnfolder]: 12505/21937 cut-off events. [2023-08-30 09:59:50,851 INFO L131 PetriNetUnfolder]: For 940594/940810 co-relation queries the response was YES. [2023-08-30 09:59:51,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155476 conditions, 21937 events. 12505/21937 cut-off events. For 940594/940810 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 183067 event pairs, 2372 based on Foata normal form. 90/21980 useless extension candidates. Maximal degree in co-relation 155329. Up to 18736 conditions per place. [2023-08-30 09:59:51,153 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 566 selfloop transitions, 90 changer transitions 2/665 dead transitions. [2023-08-30 09:59:51,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 665 transitions, 16150 flow [2023-08-30 09:59:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 09:59:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 09:59:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2323 transitions. [2023-08-30 09:59:51,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46173722917908966 [2023-08-30 09:59:51,163 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2323 transitions. [2023-08-30 09:59:51,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2323 transitions. [2023-08-30 09:59:51,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:59:51,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2323 transitions. [2023-08-30 09:59:51,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 178.69230769230768) internal successors, (2323), 13 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:51,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:51,167 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:51,167 INFO L175 Difference]: Start difference. First operand has 411 places, 570 transitions, 14199 flow. Second operand 13 states and 2323 transitions. [2023-08-30 09:59:51,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 665 transitions, 16150 flow [2023-08-30 09:59:58,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 665 transitions, 15890 flow, removed 44 selfloop flow, removed 10 redundant places. [2023-08-30 09:59:58,705 INFO L231 Difference]: Finished difference. Result has 416 places, 569 transitions, 14175 flow [2023-08-30 09:59:58,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13778, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14175, PETRI_PLACES=416, PETRI_TRANSITIONS=569} [2023-08-30 09:59:58,706 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 339 predicate places. [2023-08-30 09:59:58,706 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 569 transitions, 14175 flow [2023-08-30 09:59:58,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:58,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:59:58,707 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 09:59:58,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-08-30 09:59:58,707 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 09:59:58,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:59:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1655191194, now seen corresponding path program 1 times [2023-08-30 09:59:58,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:59:58,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039991726] [2023-08-30 09:59:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:59:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:59:58,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:59:58,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039991726] [2023-08-30 09:59:58,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039991726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 09:59:58,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667456633] [2023-08-30 09:59:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:59:58,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 09:59:58,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:59:58,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 09:59:58,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 09:59:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:59:58,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 09:59:58,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 09:59:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:59:58,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 09:59:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 09:59:59,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667456633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 09:59:59,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 09:59:59,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-08-30 09:59:59,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852898777] [2023-08-30 09:59:59,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 09:59:59,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 09:59:59,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:59:59,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 09:59:59,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-30 09:59:59,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 09:59:59,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 569 transitions, 14175 flow. Second operand has 14 states, 14 states have (on average 170.64285714285714) internal successors, (2389), 14 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 09:59:59,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:59:59,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 09:59:59,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:04,816 INFO L130 PetriNetUnfolder]: 11805/21014 cut-off events. [2023-08-30 10:00:04,816 INFO L131 PetriNetUnfolder]: For 904439/904604 co-relation queries the response was YES. [2023-08-30 10:00:05,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149343 conditions, 21014 events. 11805/21014 cut-off events. For 904439/904604 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 177472 event pairs, 1618 based on Foata normal form. 129/21078 useless extension candidates. Maximal degree in co-relation 149196. Up to 15206 conditions per place. [2023-08-30 10:00:05,086 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 604 selfloop transitions, 140 changer transitions 3/767 dead transitions. [2023-08-30 10:00:05,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 767 transitions, 16571 flow [2023-08-30 10:00:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 10:00:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 10:00:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3750 transitions. [2023-08-30 10:00:05,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614248800295312 [2023-08-30 10:00:05,088 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3750 transitions. [2023-08-30 10:00:05,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3750 transitions. [2023-08-30 10:00:05,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:05,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3750 transitions. [2023-08-30 10:00:05,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 178.57142857142858) internal successors, (3750), 21 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:05,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 387.0) internal successors, (8514), 22 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:05,094 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 387.0) internal successors, (8514), 22 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:05,094 INFO L175 Difference]: Start difference. First operand has 416 places, 569 transitions, 14175 flow. Second operand 21 states and 3750 transitions. [2023-08-30 10:00:05,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 767 transitions, 16571 flow [2023-08-30 10:00:11,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 767 transitions, 16450 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-08-30 10:00:11,322 INFO L231 Difference]: Finished difference. Result has 426 places, 557 transitions, 13735 flow [2023-08-30 10:00:11,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13455, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13735, PETRI_PLACES=426, PETRI_TRANSITIONS=557} [2023-08-30 10:00:11,322 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 349 predicate places. [2023-08-30 10:00:11,322 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 557 transitions, 13735 flow [2023-08-30 10:00:11,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 170.64285714285714) internal successors, (2389), 14 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:11,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:11,323 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:00:11,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:00:11,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-08-30 10:00:11,523 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:00:11,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:11,524 INFO L85 PathProgramCache]: Analyzing trace with hash 417081480, now seen corresponding path program 1 times [2023-08-30 10:00:11,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:11,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102172857] [2023-08-30 10:00:11,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:11,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:00:11,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:11,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102172857] [2023-08-30 10:00:11,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102172857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:11,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:11,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:00:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169713100] [2023-08-30 10:00:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:11,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:00:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:00:11,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:00:11,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:00:11,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 557 transitions, 13735 flow. Second operand has 8 states, 8 states have (on average 169.625) internal successors, (1357), 8 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:11,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:11,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:00:11,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:17,418 INFO L130 PetriNetUnfolder]: 12229/21566 cut-off events. [2023-08-30 10:00:17,418 INFO L131 PetriNetUnfolder]: For 868924/869080 co-relation queries the response was YES. [2023-08-30 10:00:17,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151967 conditions, 21566 events. 12229/21566 cut-off events. For 868924/869080 co-relation queries the response was YES. Maximal size of possible extension queue 1064. Compared 180835 event pairs, 1950 based on Foata normal form. 99/21648 useless extension candidates. Maximal degree in co-relation 151819. Up to 17226 conditions per place. [2023-08-30 10:00:17,690 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 579 selfloop transitions, 82 changer transitions 3/671 dead transitions. [2023-08-30 10:00:17,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 671 transitions, 15727 flow [2023-08-30 10:00:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:00:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:00:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2345 transitions. [2023-08-30 10:00:17,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46611011727290796 [2023-08-30 10:00:17,692 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2345 transitions. [2023-08-30 10:00:17,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2345 transitions. [2023-08-30 10:00:17,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:17,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2345 transitions. [2023-08-30 10:00:17,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 180.3846153846154) internal successors, (2345), 13 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:17,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:17,696 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:17,696 INFO L175 Difference]: Start difference. First operand has 426 places, 557 transitions, 13735 flow. Second operand 13 states and 2345 transitions. [2023-08-30 10:00:17,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 671 transitions, 15727 flow [2023-08-30 10:00:23,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 671 transitions, 15445 flow, removed 28 selfloop flow, removed 13 redundant places. [2023-08-30 10:00:23,896 INFO L231 Difference]: Finished difference. Result has 427 places, 557 transitions, 13547 flow [2023-08-30 10:00:23,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13197, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13547, PETRI_PLACES=427, PETRI_TRANSITIONS=557} [2023-08-30 10:00:23,897 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 350 predicate places. [2023-08-30 10:00:23,897 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 557 transitions, 13547 flow [2023-08-30 10:00:23,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.625) internal successors, (1357), 8 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:23,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:23,897 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:00:23,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-08-30 10:00:23,897 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:00:23,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash 108233889, now seen corresponding path program 1 times [2023-08-30 10:00:23,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:23,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800693429] [2023-08-30 10:00:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:00:23,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:23,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800693429] [2023-08-30 10:00:23,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800693429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:23,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:23,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:00:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331372211] [2023-08-30 10:00:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:23,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:00:23,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:00:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:00:24,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:00:24,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 557 transitions, 13547 flow. Second operand has 9 states, 9 states have (on average 169.44444444444446) internal successors, (1525), 9 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:24,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:24,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:00:24,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:29,543 INFO L130 PetriNetUnfolder]: 12202/21507 cut-off events. [2023-08-30 10:00:29,543 INFO L131 PetriNetUnfolder]: For 812812/812950 co-relation queries the response was YES. [2023-08-30 10:00:29,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151264 conditions, 21507 events. 12202/21507 cut-off events. For 812812/812950 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 180158 event pairs, 2206 based on Foata normal form. 42/21520 useless extension candidates. Maximal degree in co-relation 151114. Up to 18458 conditions per place. [2023-08-30 10:00:29,829 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 595 selfloop transitions, 65 changer transitions 0/667 dead transitions. [2023-08-30 10:00:29,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 667 transitions, 15753 flow [2023-08-30 10:00:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:00:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:00:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2499 transitions. [2023-08-30 10:00:29,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2023-08-30 10:00:29,831 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2499 transitions. [2023-08-30 10:00:29,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2499 transitions. [2023-08-30 10:00:29,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:29,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2499 transitions. [2023-08-30 10:00:29,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 178.5) internal successors, (2499), 14 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:29,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:29,836 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:29,836 INFO L175 Difference]: Start difference. First operand has 427 places, 557 transitions, 13547 flow. Second operand 14 states and 2499 transitions. [2023-08-30 10:00:29,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 667 transitions, 15753 flow [2023-08-30 10:00:35,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 667 transitions, 15669 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-30 10:00:35,862 INFO L231 Difference]: Finished difference. Result has 438 places, 564 transitions, 13870 flow [2023-08-30 10:00:35,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13466, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13870, PETRI_PLACES=438, PETRI_TRANSITIONS=564} [2023-08-30 10:00:35,863 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 361 predicate places. [2023-08-30 10:00:35,863 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 564 transitions, 13870 flow [2023-08-30 10:00:35,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.44444444444446) internal successors, (1525), 9 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:35,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:35,864 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:00:35,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-08-30 10:00:35,864 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:00:35,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2104336552, now seen corresponding path program 1 times [2023-08-30 10:00:35,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:35,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173082753] [2023-08-30 10:00:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:35,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:00:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173082753] [2023-08-30 10:00:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173082753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:35,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:00:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286594215] [2023-08-30 10:00:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:35,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:00:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:00:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:00:35,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:00:35,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 564 transitions, 13870 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:35,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:35,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:00:35,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:41,706 INFO L130 PetriNetUnfolder]: 12180/21523 cut-off events. [2023-08-30 10:00:41,706 INFO L131 PetriNetUnfolder]: For 816152/816350 co-relation queries the response was YES. [2023-08-30 10:00:41,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151496 conditions, 21523 events. 12180/21523 cut-off events. For 816152/816350 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 181063 event pairs, 2097 based on Foata normal form. 78/21572 useless extension candidates. Maximal degree in co-relation 151344. Up to 17558 conditions per place. [2023-08-30 10:00:41,978 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 598 selfloop transitions, 72 changer transitions 0/677 dead transitions. [2023-08-30 10:00:41,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 677 transitions, 15961 flow [2023-08-30 10:00:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:00:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:00:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2332 transitions. [2023-08-30 10:00:41,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635261379447426 [2023-08-30 10:00:41,980 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2332 transitions. [2023-08-30 10:00:41,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2332 transitions. [2023-08-30 10:00:41,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:41,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2332 transitions. [2023-08-30 10:00:41,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 179.3846153846154) internal successors, (2332), 13 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:41,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:41,983 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:41,983 INFO L175 Difference]: Start difference. First operand has 438 places, 564 transitions, 13870 flow. Second operand 13 states and 2332 transitions. [2023-08-30 10:00:41,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 677 transitions, 15961 flow [2023-08-30 10:00:48,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 677 transitions, 15859 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-08-30 10:00:48,063 INFO L231 Difference]: Finished difference. Result has 438 places, 563 transitions, 13853 flow [2023-08-30 10:00:48,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13709, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13853, PETRI_PLACES=438, PETRI_TRANSITIONS=563} [2023-08-30 10:00:48,063 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 361 predicate places. [2023-08-30 10:00:48,064 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 563 transitions, 13853 flow [2023-08-30 10:00:48,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:48,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:48,064 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:00:48,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-08-30 10:00:48,064 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:00:48,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:48,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1153099211, now seen corresponding path program 1 times [2023-08-30 10:00:48,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:48,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740318165] [2023-08-30 10:00:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:48,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:00:48,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:48,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740318165] [2023-08-30 10:00:48,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740318165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:48,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:48,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:00:48,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819913512] [2023-08-30 10:00:48,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:48,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:00:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:00:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:00:48,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:00:48,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 563 transitions, 13853 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:48,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:48,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:00:48,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:00:53,991 INFO L130 PetriNetUnfolder]: 12123/21418 cut-off events. [2023-08-30 10:00:53,992 INFO L131 PetriNetUnfolder]: For 804572/804728 co-relation queries the response was YES. [2023-08-30 10:00:54,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151269 conditions, 21418 events. 12123/21418 cut-off events. For 804572/804728 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 180155 event pairs, 2070 based on Foata normal form. 66/21437 useless extension candidates. Maximal degree in co-relation 151119. Up to 17683 conditions per place. [2023-08-30 10:00:54,246 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 602 selfloop transitions, 80 changer transitions 0/689 dead transitions. [2023-08-30 10:00:54,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 689 transitions, 16011 flow [2023-08-30 10:00:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:00:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:00:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2522 transitions. [2023-08-30 10:00:54,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654854189737911 [2023-08-30 10:00:54,248 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2522 transitions. [2023-08-30 10:00:54,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2522 transitions. [2023-08-30 10:00:54,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:00:54,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2522 transitions. [2023-08-30 10:00:54,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 180.14285714285714) internal successors, (2522), 14 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:54,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:54,252 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:54,252 INFO L175 Difference]: Start difference. First operand has 438 places, 563 transitions, 13853 flow. Second operand 14 states and 2522 transitions. [2023-08-30 10:00:54,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 689 transitions, 16011 flow [2023-08-30 10:00:59,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 689 transitions, 15871 flow, removed 21 selfloop flow, removed 7 redundant places. [2023-08-30 10:00:59,844 INFO L231 Difference]: Finished difference. Result has 444 places, 561 transitions, 13766 flow [2023-08-30 10:00:59,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13548, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13766, PETRI_PLACES=444, PETRI_TRANSITIONS=561} [2023-08-30 10:00:59,844 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 367 predicate places. [2023-08-30 10:00:59,844 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 561 transitions, 13766 flow [2023-08-30 10:00:59,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:59,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:00:59,845 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:00:59,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-08-30 10:00:59,845 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:00:59,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:00:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash 558595275, now seen corresponding path program 2 times [2023-08-30 10:00:59,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:00:59,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658702865] [2023-08-30 10:00:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:00:59,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:00:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:00:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:00:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:00:59,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658702865] [2023-08-30 10:00:59,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658702865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:00:59,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:00:59,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:00:59,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367296836] [2023-08-30 10:00:59,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:00:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:00:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:00:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:00:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:00:59,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:00:59,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 561 transitions, 13766 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:00:59,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:00:59,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:00:59,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:05,607 INFO L130 PetriNetUnfolder]: 12086/21384 cut-off events. [2023-08-30 10:01:05,608 INFO L131 PetriNetUnfolder]: For 774351/774483 co-relation queries the response was YES. [2023-08-30 10:01:05,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150868 conditions, 21384 events. 12086/21384 cut-off events. For 774351/774483 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 179922 event pairs, 2073 based on Foata normal form. 57/21400 useless extension candidates. Maximal degree in co-relation 150719. Up to 17336 conditions per place. [2023-08-30 10:01:05,888 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 588 selfloop transitions, 93 changer transitions 0/688 dead transitions. [2023-08-30 10:01:05,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 688 transitions, 15993 flow [2023-08-30 10:01:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:01:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:01:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2516 transitions. [2023-08-30 10:01:05,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643779992617202 [2023-08-30 10:01:05,891 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2516 transitions. [2023-08-30 10:01:05,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2516 transitions. [2023-08-30 10:01:05,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:05,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2516 transitions. [2023-08-30 10:01:05,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 179.71428571428572) internal successors, (2516), 14 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:05,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:05,896 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:05,896 INFO L175 Difference]: Start difference. First operand has 444 places, 561 transitions, 13766 flow. Second operand 14 states and 2516 transitions. [2023-08-30 10:01:05,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 688 transitions, 15993 flow [2023-08-30 10:01:11,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 688 transitions, 15939 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-08-30 10:01:11,795 INFO L231 Difference]: Finished difference. Result has 451 places, 559 transitions, 13799 flow [2023-08-30 10:01:11,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13613, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13799, PETRI_PLACES=451, PETRI_TRANSITIONS=559} [2023-08-30 10:01:11,795 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 374 predicate places. [2023-08-30 10:01:11,796 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 559 transitions, 13799 flow [2023-08-30 10:01:11,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:11,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:11,796 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:01:11,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-08-30 10:01:11,796 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:01:11,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1285682136, now seen corresponding path program 1 times [2023-08-30 10:01:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288589201] [2023-08-30 10:01:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:01:11,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:11,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288589201] [2023-08-30 10:01:11,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288589201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:11,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:11,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:01:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84893348] [2023-08-30 10:01:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:11,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:01:11,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:11,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:01:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:01:11,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:01:11,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 559 transitions, 13799 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:11,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:11,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:01:11,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:17,609 INFO L130 PetriNetUnfolder]: 12036/21250 cut-off events. [2023-08-30 10:01:17,609 INFO L131 PetriNetUnfolder]: For 775808/775994 co-relation queries the response was YES. [2023-08-30 10:01:17,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150309 conditions, 21250 events. 12036/21250 cut-off events. For 775808/775994 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 178135 event pairs, 1893 based on Foata normal form. 81/21284 useless extension candidates. Maximal degree in co-relation 150159. Up to 17396 conditions per place. [2023-08-30 10:01:17,859 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 593 selfloop transitions, 77 changer transitions 0/677 dead transitions. [2023-08-30 10:01:17,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 677 transitions, 15710 flow [2023-08-30 10:01:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:01:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:01:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2518 transitions. [2023-08-30 10:01:17,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474713916574384 [2023-08-30 10:01:17,861 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2518 transitions. [2023-08-30 10:01:17,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2518 transitions. [2023-08-30 10:01:17,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:17,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2518 transitions. [2023-08-30 10:01:17,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 179.85714285714286) internal successors, (2518), 14 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:17,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:17,865 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:17,865 INFO L175 Difference]: Start difference. First operand has 451 places, 559 transitions, 13799 flow. Second operand 14 states and 2518 transitions. [2023-08-30 10:01:17,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 677 transitions, 15710 flow [2023-08-30 10:01:23,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 677 transitions, 15500 flow, removed 17 selfloop flow, removed 12 redundant places. [2023-08-30 10:01:23,504 INFO L231 Difference]: Finished difference. Result has 450 places, 551 transitions, 13467 flow [2023-08-30 10:01:23,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13313, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13467, PETRI_PLACES=450, PETRI_TRANSITIONS=551} [2023-08-30 10:01:23,504 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 373 predicate places. [2023-08-30 10:01:23,504 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 551 transitions, 13467 flow [2023-08-30 10:01:23,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:23,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:23,505 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:01:23,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-08-30 10:01:23,505 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:01:23,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1866138476, now seen corresponding path program 1 times [2023-08-30 10:01:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:23,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873023806] [2023-08-30 10:01:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:23,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:01:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:23,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873023806] [2023-08-30 10:01:23,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873023806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:23,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:23,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:01:23,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681200673] [2023-08-30 10:01:23,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:01:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:01:23,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:01:23,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:01:23,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 551 transitions, 13467 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:23,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:23,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:01:23,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:29,027 INFO L130 PetriNetUnfolder]: 11585/20689 cut-off events. [2023-08-30 10:01:29,027 INFO L131 PetriNetUnfolder]: For 757317/757437 co-relation queries the response was YES. [2023-08-30 10:01:29,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146878 conditions, 20689 events. 11585/20689 cut-off events. For 757317/757437 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 174895 event pairs, 1798 based on Foata normal form. 60/20693 useless extension candidates. Maximal degree in co-relation 146729. Up to 16390 conditions per place. [2023-08-30 10:01:29,283 INFO L137 encePairwiseOnDemand]: 370/387 looper letters, 584 selfloop transitions, 71 changer transitions 0/675 dead transitions. [2023-08-30 10:01:29,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 675 transitions, 15434 flow [2023-08-30 10:01:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:01:29,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:01:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2335 transitions. [2023-08-30 10:01:29,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641224408666269 [2023-08-30 10:01:29,285 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2335 transitions. [2023-08-30 10:01:29,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2335 transitions. [2023-08-30 10:01:29,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:29,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2335 transitions. [2023-08-30 10:01:29,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 179.6153846153846) internal successors, (2335), 13 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:29,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:29,289 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:29,289 INFO L175 Difference]: Start difference. First operand has 450 places, 551 transitions, 13467 flow. Second operand 13 states and 2335 transitions. [2023-08-30 10:01:29,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 675 transitions, 15434 flow [2023-08-30 10:01:34,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 675 transitions, 15369 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-08-30 10:01:34,492 INFO L231 Difference]: Finished difference. Result has 450 places, 545 transitions, 13311 flow [2023-08-30 10:01:34,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13169, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13311, PETRI_PLACES=450, PETRI_TRANSITIONS=545} [2023-08-30 10:01:34,493 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 373 predicate places. [2023-08-30 10:01:34,493 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 545 transitions, 13311 flow [2023-08-30 10:01:34,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:34,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:34,493 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:01:34,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-08-30 10:01:34,493 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:01:34,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1764360678, now seen corresponding path program 1 times [2023-08-30 10:01:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088930459] [2023-08-30 10:01:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:01:34,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:34,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088930459] [2023-08-30 10:01:34,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088930459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:34,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:34,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:01:34,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514633837] [2023-08-30 10:01:34,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:34,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:01:34,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:01:34,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:01:34,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:01:34,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 545 transitions, 13311 flow. Second operand has 9 states, 9 states have (on average 169.33333333333334) internal successors, (1524), 9 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:34,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:34,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:01:34,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:40,083 INFO L130 PetriNetUnfolder]: 11992/21165 cut-off events. [2023-08-30 10:01:40,083 INFO L131 PetriNetUnfolder]: For 761776/761878 co-relation queries the response was YES. [2023-08-30 10:01:40,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149473 conditions, 21165 events. 11992/21165 cut-off events. For 761776/761878 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 177132 event pairs, 2194 based on Foata normal form. 36/21172 useless extension candidates. Maximal degree in co-relation 149323. Up to 18113 conditions per place. [2023-08-30 10:01:40,389 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 571 selfloop transitions, 66 changer transitions 0/644 dead transitions. [2023-08-30 10:01:40,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 644 transitions, 15204 flow [2023-08-30 10:01:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:01:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:01:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2493 transitions. [2023-08-30 10:01:40,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601328903654485 [2023-08-30 10:01:40,391 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2493 transitions. [2023-08-30 10:01:40,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2493 transitions. [2023-08-30 10:01:40,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:40,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2493 transitions. [2023-08-30 10:01:40,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 178.07142857142858) internal successors, (2493), 14 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:40,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:40,396 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:40,396 INFO L175 Difference]: Start difference. First operand has 450 places, 545 transitions, 13311 flow. Second operand 14 states and 2493 transitions. [2023-08-30 10:01:40,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 644 transitions, 15204 flow [2023-08-30 10:01:45,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 644 transitions, 15096 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-30 10:01:45,780 INFO L231 Difference]: Finished difference. Result has 457 places, 548 transitions, 13418 flow [2023-08-30 10:01:45,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13139, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13418, PETRI_PLACES=457, PETRI_TRANSITIONS=548} [2023-08-30 10:01:45,780 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 380 predicate places. [2023-08-30 10:01:45,780 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 548 transitions, 13418 flow [2023-08-30 10:01:45,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.33333333333334) internal successors, (1524), 9 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:45,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:45,781 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:01:45,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-08-30 10:01:45,781 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:01:45,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2080241267, now seen corresponding path program 3 times [2023-08-30 10:01:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:45,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793222902] [2023-08-30 10:01:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:45,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:01:45,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:45,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793222902] [2023-08-30 10:01:45,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793222902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:01:45,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:01:45,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:01:45,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638937546] [2023-08-30 10:01:45,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:01:45,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:01:45,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:45,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:01:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:01:45,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:01:45,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 548 transitions, 13418 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:45,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:45,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:01:45,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:01:51,254 INFO L130 PetriNetUnfolder]: 11966/21081 cut-off events. [2023-08-30 10:01:51,255 INFO L131 PetriNetUnfolder]: For 761040/761199 co-relation queries the response was YES. [2023-08-30 10:01:51,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148558 conditions, 21081 events. 11966/21081 cut-off events. For 761040/761199 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 176032 event pairs, 1968 based on Foata normal form. 78/21118 useless extension candidates. Maximal degree in co-relation 148406. Up to 17637 conditions per place. [2023-08-30 10:01:51,816 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 565 selfloop transitions, 69 changer transitions 0/641 dead transitions. [2023-08-30 10:01:51,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 641 transitions, 15104 flow [2023-08-30 10:01:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:01:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:01:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2325 transitions. [2023-08-30 10:01:51,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46213476446034585 [2023-08-30 10:01:51,818 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2325 transitions. [2023-08-30 10:01:51,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2325 transitions. [2023-08-30 10:01:51,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:01:51,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2325 transitions. [2023-08-30 10:01:51,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 178.84615384615384) internal successors, (2325), 13 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:51,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:51,822 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:51,822 INFO L175 Difference]: Start difference. First operand has 457 places, 548 transitions, 13418 flow. Second operand 13 states and 2325 transitions. [2023-08-30 10:01:51,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 641 transitions, 15104 flow [2023-08-30 10:01:56,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 641 transitions, 14924 flow, removed 8 selfloop flow, removed 14 redundant places. [2023-08-30 10:01:56,957 INFO L231 Difference]: Finished difference. Result has 448 places, 543 transitions, 13163 flow [2023-08-30 10:01:56,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13025, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13163, PETRI_PLACES=448, PETRI_TRANSITIONS=543} [2023-08-30 10:01:56,958 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 371 predicate places. [2023-08-30 10:01:56,958 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 543 transitions, 13163 flow [2023-08-30 10:01:56,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:56,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:01:56,958 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:01:56,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-08-30 10:01:56,958 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:01:56,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:01:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash 879477070, now seen corresponding path program 2 times [2023-08-30 10:01:56,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:01:56,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543967991] [2023-08-30 10:01:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:01:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:01:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:01:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:01:57,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:01:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543967991] [2023-08-30 10:01:57,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543967991] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:01:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808085416] [2023-08-30 10:01:57,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:01:57,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:01:57,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:01:57,047 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:01:57,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:01:57,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:01:57,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:01:57,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:01:57,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:01:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:01:57,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:01:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:01:57,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808085416] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:01:57,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:01:57,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 10:01:57,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784782549] [2023-08-30 10:01:57,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:01:57,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 10:01:57,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:01:57,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 10:01:57,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-30 10:01:57,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 387 [2023-08-30 10:01:57,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 543 transitions, 13163 flow. Second operand has 16 states, 16 states have (on average 169.3125) internal successors, (2709), 16 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:01:57,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:01:57,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 387 [2023-08-30 10:01:57,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:03,392 INFO L130 PetriNetUnfolder]: 12104/21375 cut-off events. [2023-08-30 10:02:03,392 INFO L131 PetriNetUnfolder]: For 781449/781551 co-relation queries the response was YES. [2023-08-30 10:02:03,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149418 conditions, 21375 events. 12104/21375 cut-off events. For 781449/781551 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 178862 event pairs, 1269 based on Foata normal form. 141/21484 useless extension candidates. Maximal degree in co-relation 149267. Up to 10027 conditions per place. [2023-08-30 10:02:03,662 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 476 selfloop transitions, 335 changer transitions 28/846 dead transitions. [2023-08-30 10:02:03,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 846 transitions, 17911 flow [2023-08-30 10:02:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 10:02:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 10:02:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4973 transitions. [2023-08-30 10:02:03,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45893318567737174 [2023-08-30 10:02:03,665 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4973 transitions. [2023-08-30 10:02:03,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4973 transitions. [2023-08-30 10:02:03,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:03,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4973 transitions. [2023-08-30 10:02:03,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 177.60714285714286) internal successors, (4973), 28 states have internal predecessors, (4973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:03,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 387.0) internal successors, (11223), 29 states have internal predecessors, (11223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:03,673 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 387.0) internal successors, (11223), 29 states have internal predecessors, (11223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:03,673 INFO L175 Difference]: Start difference. First operand has 448 places, 543 transitions, 13163 flow. Second operand 28 states and 4973 transitions. [2023-08-30 10:02:03,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 846 transitions, 17911 flow [2023-08-30 10:02:08,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 846 transitions, 17839 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-08-30 10:02:08,595 INFO L231 Difference]: Finished difference. Result has 464 places, 573 transitions, 14829 flow [2023-08-30 10:02:08,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=12749, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14829, PETRI_PLACES=464, PETRI_TRANSITIONS=573} [2023-08-30 10:02:08,596 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 387 predicate places. [2023-08-30 10:02:08,596 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 573 transitions, 14829 flow [2023-08-30 10:02:08,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 169.3125) internal successors, (2709), 16 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:08,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:08,596 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:02:08,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 10:02:08,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-08-30 10:02:08,802 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:02:08,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:08,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1712865403, now seen corresponding path program 1 times [2023-08-30 10:02:08,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:08,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858646291] [2023-08-30 10:02:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:08,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:02:08,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:08,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858646291] [2023-08-30 10:02:08,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858646291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:08,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:08,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:02:08,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704658210] [2023-08-30 10:02:08,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:08,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:02:08,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:08,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:02:08,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:02:09,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:02:09,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 573 transitions, 14829 flow. Second operand has 9 states, 9 states have (on average 169.44444444444446) internal successors, (1525), 9 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:09,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:09,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:02:09,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:14,665 INFO L130 PetriNetUnfolder]: 12047/21269 cut-off events. [2023-08-30 10:02:14,665 INFO L131 PetriNetUnfolder]: For 777393/777477 co-relation queries the response was YES. [2023-08-30 10:02:14,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154998 conditions, 21269 events. 12047/21269 cut-off events. For 777393/777477 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 177799 event pairs, 2363 based on Foata normal form. 12/21234 useless extension candidates. Maximal degree in co-relation 154844. Up to 19209 conditions per place. [2023-08-30 10:02:14,947 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 593 selfloop transitions, 45 changer transitions 0/645 dead transitions. [2023-08-30 10:02:14,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 645 transitions, 16669 flow [2023-08-30 10:02:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:02:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:02:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2134 transitions. [2023-08-30 10:02:14,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595176571920758 [2023-08-30 10:02:14,949 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2134 transitions. [2023-08-30 10:02:14,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2134 transitions. [2023-08-30 10:02:14,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:14,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2134 transitions. [2023-08-30 10:02:14,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 177.83333333333334) internal successors, (2134), 12 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:14,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:14,952 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:14,953 INFO L175 Difference]: Start difference. First operand has 464 places, 573 transitions, 14829 flow. Second operand 12 states and 2134 transitions. [2023-08-30 10:02:14,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 645 transitions, 16669 flow [2023-08-30 10:02:21,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 645 transitions, 16111 flow, removed 176 selfloop flow, removed 14 redundant places. [2023-08-30 10:02:21,330 INFO L231 Difference]: Finished difference. Result has 464 places, 578 transitions, 14565 flow [2023-08-30 10:02:21,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14289, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14565, PETRI_PLACES=464, PETRI_TRANSITIONS=578} [2023-08-30 10:02:21,330 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 387 predicate places. [2023-08-30 10:02:21,330 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 578 transitions, 14565 flow [2023-08-30 10:02:21,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.44444444444446) internal successors, (1525), 9 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:21,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:21,331 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:02:21,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-08-30 10:02:21,331 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:02:21,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:21,331 INFO L85 PathProgramCache]: Analyzing trace with hash 108233797, now seen corresponding path program 2 times [2023-08-30 10:02:21,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:21,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745399272] [2023-08-30 10:02:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:21,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:02:21,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:21,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745399272] [2023-08-30 10:02:21,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745399272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:21,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:21,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:02:21,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692976094] [2023-08-30 10:02:21,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:21,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:02:21,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:02:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:02:21,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:02:21,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 578 transitions, 14565 flow. Second operand has 9 states, 9 states have (on average 169.44444444444446) internal successors, (1525), 9 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:21,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:21,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:02:21,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:27,660 INFO L130 PetriNetUnfolder]: 12041/21254 cut-off events. [2023-08-30 10:02:27,660 INFO L131 PetriNetUnfolder]: For 759873/759957 co-relation queries the response was YES. [2023-08-30 10:02:28,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152193 conditions, 21254 events. 12041/21254 cut-off events. For 759873/759957 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 177590 event pairs, 2366 based on Foata normal form. 12/21216 useless extension candidates. Maximal degree in co-relation 152039. Up to 19186 conditions per place. [2023-08-30 10:02:28,191 INFO L137 encePairwiseOnDemand]: 367/387 looper letters, 592 selfloop transitions, 45 changer transitions 0/644 dead transitions. [2023-08-30 10:02:28,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 644 transitions, 16128 flow [2023-08-30 10:02:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:02:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:02:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2302 transitions. [2023-08-30 10:02:28,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45756310872589945 [2023-08-30 10:02:28,193 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2302 transitions. [2023-08-30 10:02:28,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2302 transitions. [2023-08-30 10:02:28,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:28,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2302 transitions. [2023-08-30 10:02:28,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 177.07692307692307) internal successors, (2302), 13 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:28,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:28,197 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:28,197 INFO L175 Difference]: Start difference. First operand has 464 places, 578 transitions, 14565 flow. Second operand 13 states and 2302 transitions. [2023-08-30 10:02:28,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 644 transitions, 16128 flow [2023-08-30 10:02:33,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 644 transitions, 16060 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-08-30 10:02:33,706 INFO L231 Difference]: Finished difference. Result has 469 places, 575 transitions, 14445 flow [2023-08-30 10:02:33,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14355, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14445, PETRI_PLACES=469, PETRI_TRANSITIONS=575} [2023-08-30 10:02:33,707 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 392 predicate places. [2023-08-30 10:02:33,707 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 575 transitions, 14445 flow [2023-08-30 10:02:33,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.44444444444446) internal successors, (1525), 9 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:33,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:33,707 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-08-30 10:02:33,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-08-30 10:02:33,708 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:02:33,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 132050088, now seen corresponding path program 2 times [2023-08-30 10:02:33,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:33,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099225607] [2023-08-30 10:02:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:33,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:02:33,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:33,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099225607] [2023-08-30 10:02:33,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099225607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:33,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:33,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:02:33,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412190291] [2023-08-30 10:02:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:33,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:02:33,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:33,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:02:33,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:02:33,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 387 [2023-08-30 10:02:33,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 575 transitions, 14445 flow. Second operand has 8 states, 8 states have (on average 169.625) internal successors, (1357), 8 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:33,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:33,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 387 [2023-08-30 10:02:33,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:39,510 INFO L130 PetriNetUnfolder]: 12019/21194 cut-off events. [2023-08-30 10:02:39,510 INFO L131 PetriNetUnfolder]: For 765277/765346 co-relation queries the response was YES. [2023-08-30 10:02:39,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151224 conditions, 21194 events. 12019/21194 cut-off events. For 765277/765346 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 176832 event pairs, 2007 based on Foata normal form. 36/21210 useless extension candidates. Maximal degree in co-relation 151069. Up to 17488 conditions per place. [2023-08-30 10:02:39,781 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 592 selfloop transitions, 64 changer transitions 0/663 dead transitions. [2023-08-30 10:02:39,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 663 transitions, 16011 flow [2023-08-30 10:02:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:02:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:02:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2157 transitions. [2023-08-30 10:02:39,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46447028423772607 [2023-08-30 10:02:39,783 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2157 transitions. [2023-08-30 10:02:39,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2157 transitions. [2023-08-30 10:02:39,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:39,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2157 transitions. [2023-08-30 10:02:39,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.75) internal successors, (2157), 12 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:39,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:39,786 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:39,786 INFO L175 Difference]: Start difference. First operand has 469 places, 575 transitions, 14445 flow. Second operand 12 states and 2157 transitions. [2023-08-30 10:02:39,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 663 transitions, 16011 flow [2023-08-30 10:02:45,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 663 transitions, 15887 flow, removed 37 selfloop flow, removed 12 redundant places. [2023-08-30 10:02:45,754 INFO L231 Difference]: Finished difference. Result has 462 places, 568 transitions, 14134 flow [2023-08-30 10:02:45,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14006, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14134, PETRI_PLACES=462, PETRI_TRANSITIONS=568} [2023-08-30 10:02:45,755 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 385 predicate places. [2023-08-30 10:02:45,755 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 568 transitions, 14134 flow [2023-08-30 10:02:45,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.625) internal successors, (1357), 8 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:45,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:45,755 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:02:45,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-08-30 10:02:45,755 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:02:45,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:45,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1600108420, now seen corresponding path program 1 times [2023-08-30 10:02:45,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:45,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886401440] [2023-08-30 10:02:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:02:45,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886401440] [2023-08-30 10:02:45,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886401440] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:02:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381306621] [2023-08-30 10:02:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:45,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:02:45,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:02:45,819 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:02:45,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:02:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:45,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 10:02:45,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:02:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:02:46,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:02:46,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381306621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:46,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:02:46,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-30 10:02:46,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129784129] [2023-08-30 10:02:46,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:46,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:02:46,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:46,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:02:46,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-08-30 10:02:46,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 387 [2023-08-30 10:02:46,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 568 transitions, 14134 flow. Second operand has 7 states, 7 states have (on average 169.57142857142858) internal successors, (1187), 7 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:46,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:46,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 387 [2023-08-30 10:02:46,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:51,475 INFO L130 PetriNetUnfolder]: 11699/20605 cut-off events. [2023-08-30 10:02:51,475 INFO L131 PetriNetUnfolder]: For 742515/742593 co-relation queries the response was YES. [2023-08-30 10:02:51,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142332 conditions, 20605 events. 11699/20605 cut-off events. For 742515/742593 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 170887 event pairs, 4764 based on Foata normal form. 189/20736 useless extension candidates. Maximal degree in co-relation 142177. Up to 12407 conditions per place. [2023-08-30 10:02:52,019 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 393 selfloop transitions, 244 changer transitions 17/661 dead transitions. [2023-08-30 10:02:52,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 661 transitions, 14746 flow [2023-08-30 10:02:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:02:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:02:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2154 transitions. [2023-08-30 10:02:52,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46382428940568476 [2023-08-30 10:02:52,022 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2154 transitions. [2023-08-30 10:02:52,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2154 transitions. [2023-08-30 10:02:52,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:52,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2154 transitions. [2023-08-30 10:02:52,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.5) internal successors, (2154), 12 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:52,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:52,027 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:52,027 INFO L175 Difference]: Start difference. First operand has 462 places, 568 transitions, 14134 flow. Second operand 12 states and 2154 transitions. [2023-08-30 10:02:52,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 661 transitions, 14746 flow [2023-08-30 10:02:57,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 661 transitions, 14023 flow, removed 113 selfloop flow, removed 39 redundant places. [2023-08-30 10:02:57,023 INFO L231 Difference]: Finished difference. Result has 415 places, 532 transitions, 12158 flow [2023-08-30 10:02:57,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=11795, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12158, PETRI_PLACES=415, PETRI_TRANSITIONS=532} [2023-08-30 10:02:57,023 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 338 predicate places. [2023-08-30 10:02:57,023 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 532 transitions, 12158 flow [2023-08-30 10:02:57,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 169.57142857142858) internal successors, (1187), 7 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:57,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:57,024 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:02:57,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 10:02:57,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:02:57,224 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:02:57,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash -493327197, now seen corresponding path program 1 times [2023-08-30 10:02:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987156133] [2023-08-30 10:02:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:02:57,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:57,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987156133] [2023-08-30 10:02:57,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987156133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:02:57,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648966258] [2023-08-30 10:02:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:57,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:02:57,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:02:57,317 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:02:57,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:02:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:57,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 10:02:57,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:02:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:02:57,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:02:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648966258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:57,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:02:57,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2023-08-30 10:02:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087204528] [2023-08-30 10:02:57,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:57,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:02:57,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:57,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:02:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:02:57,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:02:57,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 532 transitions, 12158 flow. Second operand has 10 states, 10 states have (on average 165.6) internal successors, (1656), 10 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:57,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:57,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:02:57,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:03:02,848 INFO L130 PetriNetUnfolder]: 11635/20492 cut-off events. [2023-08-30 10:03:02,848 INFO L131 PetriNetUnfolder]: For 588631/588706 co-relation queries the response was YES. [2023-08-30 10:03:03,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139756 conditions, 20492 events. 11635/20492 cut-off events. For 588631/588706 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 170076 event pairs, 2366 based on Foata normal form. 30/20478 useless extension candidates. Maximal degree in co-relation 139612. Up to 18732 conditions per place. [2023-08-30 10:03:03,094 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 590 selfloop transitions, 24 changer transitions 0/621 dead transitions. [2023-08-30 10:03:03,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 621 transitions, 14063 flow [2023-08-30 10:03:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:03:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:03:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2408 transitions. [2023-08-30 10:03:03,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 10:03:03,096 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2408 transitions. [2023-08-30 10:03:03,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2408 transitions. [2023-08-30 10:03:03,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:03:03,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2408 transitions. [2023-08-30 10:03:03,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 172.0) internal successors, (2408), 14 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:03,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:03,100 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:03,100 INFO L175 Difference]: Start difference. First operand has 415 places, 532 transitions, 12158 flow. Second operand 14 states and 2408 transitions. [2023-08-30 10:03:03,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 621 transitions, 14063 flow [2023-08-30 10:03:07,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 621 transitions, 13920 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 10:03:07,210 INFO L231 Difference]: Finished difference. Result has 427 places, 541 transitions, 12339 flow [2023-08-30 10:03:07,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=12028, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12339, PETRI_PLACES=427, PETRI_TRANSITIONS=541} [2023-08-30 10:03:07,211 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 350 predicate places. [2023-08-30 10:03:07,211 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 541 transitions, 12339 flow [2023-08-30 10:03:07,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.6) internal successors, (1656), 10 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:07,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:03:07,211 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:03:07,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 10:03:07,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2023-08-30 10:03:07,411 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:03:07,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:03:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1728775475, now seen corresponding path program 1 times [2023-08-30 10:03:07,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:03:07,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998318143] [2023-08-30 10:03:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:03:07,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:03:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:03:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:03:07,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:03:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998318143] [2023-08-30 10:03:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998318143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:03:07,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:03:07,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 10:03:07,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964869777] [2023-08-30 10:03:07,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:03:07,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:03:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:03:07,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:03:07,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:03:07,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:03:07,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 541 transitions, 12339 flow. Second operand has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:07,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:03:07,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:03:07,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:03:12,637 INFO L130 PetriNetUnfolder]: 11708/20622 cut-off events. [2023-08-30 10:03:12,638 INFO L131 PetriNetUnfolder]: For 582687/582762 co-relation queries the response was YES. [2023-08-30 10:03:12,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140199 conditions, 20622 events. 11708/20622 cut-off events. For 582687/582762 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 171269 event pairs, 2381 based on Foata normal form. 30/20608 useless extension candidates. Maximal degree in co-relation 140051. Up to 18853 conditions per place. [2023-08-30 10:03:12,904 INFO L137 encePairwiseOnDemand]: 370/387 looper letters, 591 selfloop transitions, 23 changer transitions 0/621 dead transitions. [2023-08-30 10:03:12,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 621 transitions, 14061 flow [2023-08-30 10:03:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:03:12,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:03:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2081 transitions. [2023-08-30 10:03:12,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44810508182601205 [2023-08-30 10:03:12,906 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2081 transitions. [2023-08-30 10:03:12,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2081 transitions. [2023-08-30 10:03:12,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:03:12,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2081 transitions. [2023-08-30 10:03:12,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 173.41666666666666) internal successors, (2081), 12 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:12,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:12,909 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:12,909 INFO L175 Difference]: Start difference. First operand has 427 places, 541 transitions, 12339 flow. Second operand 12 states and 2081 transitions. [2023-08-30 10:03:12,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 621 transitions, 14061 flow [2023-08-30 10:03:17,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 621 transitions, 13971 flow, removed 36 selfloop flow, removed 6 redundant places. [2023-08-30 10:03:17,332 INFO L231 Difference]: Finished difference. Result has 433 places, 543 transitions, 12365 flow [2023-08-30 10:03:17,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=12249, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12365, PETRI_PLACES=433, PETRI_TRANSITIONS=543} [2023-08-30 10:03:17,333 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 356 predicate places. [2023-08-30 10:03:17,333 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 543 transitions, 12365 flow [2023-08-30 10:03:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:17,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:03:17,333 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:03:17,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-08-30 10:03:17,334 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:03:17,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:03:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1920002381, now seen corresponding path program 2 times [2023-08-30 10:03:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:03:17,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005502084] [2023-08-30 10:03:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:03:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:03:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:03:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:03:17,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:03:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005502084] [2023-08-30 10:03:17,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005502084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:03:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063887563] [2023-08-30 10:03:17,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:03:17,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:03:17,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:03:17,406 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:03:17,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:03:17,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:03:17,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:03:17,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 10:03:17,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:03:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:03:17,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:03:17,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063887563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:03:17,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:03:17,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2023-08-30 10:03:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878680682] [2023-08-30 10:03:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:03:17,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:03:17,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:03:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:03:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-30 10:03:17,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 387 [2023-08-30 10:03:17,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 543 transitions, 12365 flow. Second operand has 9 states, 9 states have (on average 164.77777777777777) internal successors, (1483), 9 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:17,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:03:17,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 387 [2023-08-30 10:03:17,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:03:23,184 INFO L130 PetriNetUnfolder]: 12226/21619 cut-off events. [2023-08-30 10:03:23,184 INFO L131 PetriNetUnfolder]: For 648212/648323 co-relation queries the response was YES. [2023-08-30 10:03:23,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146346 conditions, 21619 events. 12226/21619 cut-off events. For 648212/648323 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 181777 event pairs, 1318 based on Foata normal form. 141/21734 useless extension candidates. Maximal degree in co-relation 146196. Up to 7099 conditions per place. [2023-08-30 10:03:23,750 INFO L137 encePairwiseOnDemand]: 368/387 looper letters, 458 selfloop transitions, 318 changer transitions 35/818 dead transitions. [2023-08-30 10:03:23,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 818 transitions, 16597 flow [2023-08-30 10:03:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:03:23,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:03:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3505 transitions. [2023-08-30 10:03:23,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528423772609819 [2023-08-30 10:03:23,753 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3505 transitions. [2023-08-30 10:03:23,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3505 transitions. [2023-08-30 10:03:23,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:03:23,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3505 transitions. [2023-08-30 10:03:23,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 175.25) internal successors, (3505), 20 states have internal predecessors, (3505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:23,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 387.0) internal successors, (8127), 21 states have internal predecessors, (8127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:23,758 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 387.0) internal successors, (8127), 21 states have internal predecessors, (8127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:23,758 INFO L175 Difference]: Start difference. First operand has 433 places, 543 transitions, 12365 flow. Second operand 20 states and 3505 transitions. [2023-08-30 10:03:23,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 818 transitions, 16597 flow [2023-08-30 10:03:28,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 818 transitions, 16562 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-30 10:03:28,030 INFO L231 Difference]: Finished difference. Result has 451 places, 571 transitions, 14086 flow [2023-08-30 10:03:28,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=12330, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=14086, PETRI_PLACES=451, PETRI_TRANSITIONS=571} [2023-08-30 10:03:28,031 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 374 predicate places. [2023-08-30 10:03:28,031 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 571 transitions, 14086 flow [2023-08-30 10:03:28,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 164.77777777777777) internal successors, (1483), 9 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:28,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:03:28,031 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:03:28,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:03:28,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:03:28,237 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:03:28,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:03:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1916053803, now seen corresponding path program 3 times [2023-08-30 10:03:28,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:03:28,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728406126] [2023-08-30 10:03:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:03:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:03:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:03:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:03:28,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:03:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728406126] [2023-08-30 10:03:28,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728406126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:03:28,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:03:28,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 10:03:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36947197] [2023-08-30 10:03:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:03:28,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:03:28,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:03:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:03:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:03:28,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:03:28,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 571 transitions, 14086 flow. Second operand has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:28,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:03:28,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:03:28,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:03:34,185 INFO L130 PetriNetUnfolder]: 12027/21259 cut-off events. [2023-08-30 10:03:34,186 INFO L131 PetriNetUnfolder]: For 667586/667667 co-relation queries the response was YES. [2023-08-30 10:03:34,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152659 conditions, 21259 events. 12027/21259 cut-off events. For 667586/667667 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 178609 event pairs, 2441 based on Foata normal form. 33/21269 useless extension candidates. Maximal degree in co-relation 152502. Up to 19476 conditions per place. [2023-08-30 10:03:34,448 INFO L137 encePairwiseOnDemand]: 370/387 looper letters, 616 selfloop transitions, 23 changer transitions 0/646 dead transitions. [2023-08-30 10:03:34,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 646 transitions, 15975 flow [2023-08-30 10:03:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:03:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:03:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2237 transitions. [2023-08-30 10:03:34,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44464321208507257 [2023-08-30 10:03:34,450 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2237 transitions. [2023-08-30 10:03:34,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2237 transitions. [2023-08-30 10:03:34,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:03:34,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2237 transitions. [2023-08-30 10:03:34,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 172.07692307692307) internal successors, (2237), 13 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:34,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:34,454 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:34,454 INFO L175 Difference]: Start difference. First operand has 451 places, 571 transitions, 14086 flow. Second operand 13 states and 2237 transitions. [2023-08-30 10:03:34,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 646 transitions, 15975 flow [2023-08-30 10:03:39,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 646 transitions, 15761 flow, removed 65 selfloop flow, removed 9 redundant places. [2023-08-30 10:03:39,858 INFO L231 Difference]: Finished difference. Result has 457 places, 578 transitions, 14163 flow [2023-08-30 10:03:39,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=13872, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14163, PETRI_PLACES=457, PETRI_TRANSITIONS=578} [2023-08-30 10:03:39,858 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 380 predicate places. [2023-08-30 10:03:39,858 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 578 transitions, 14163 flow [2023-08-30 10:03:39,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:39,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:03:39,859 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:03:39,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-08-30 10:03:39,859 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:03:39,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:03:39,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1688964961, now seen corresponding path program 2 times [2023-08-30 10:03:39,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:03:39,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172347650] [2023-08-30 10:03:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:03:39,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:03:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:03:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:03:39,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:03:39,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172347650] [2023-08-30 10:03:39,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172347650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:03:39,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:03:39,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 10:03:39,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461056104] [2023-08-30 10:03:39,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:03:39,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:03:39,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:03:39,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:03:39,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:03:40,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:03:40,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 578 transitions, 14163 flow. Second operand has 10 states, 10 states have (on average 165.6) internal successors, (1656), 10 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:40,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:03:40,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:03:40,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:03:45,773 INFO L130 PetriNetUnfolder]: 12100/21392 cut-off events. [2023-08-30 10:03:45,773 INFO L131 PetriNetUnfolder]: For 673180/673261 co-relation queries the response was YES. [2023-08-30 10:03:45,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153287 conditions, 21392 events. 12100/21392 cut-off events. For 673180/673261 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 179862 event pairs, 2456 based on Foata normal form. 33/21402 useless extension candidates. Maximal degree in co-relation 153130. Up to 19567 conditions per place. [2023-08-30 10:03:46,055 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 625 selfloop transitions, 24 changer transitions 0/656 dead transitions. [2023-08-30 10:03:46,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 656 transitions, 15998 flow [2023-08-30 10:03:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:03:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:03:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2405 transitions. [2023-08-30 10:03:46,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443890734588409 [2023-08-30 10:03:46,058 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2405 transitions. [2023-08-30 10:03:46,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2405 transitions. [2023-08-30 10:03:46,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:03:46,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2405 transitions. [2023-08-30 10:03:46,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 171.78571428571428) internal successors, (2405), 14 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:46,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:46,062 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:46,062 INFO L175 Difference]: Start difference. First operand has 457 places, 578 transitions, 14163 flow. Second operand 14 states and 2405 transitions. [2023-08-30 10:03:46,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 656 transitions, 15998 flow [2023-08-30 10:03:51,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 656 transitions, 15864 flow, removed 33 selfloop flow, removed 7 redundant places. [2023-08-30 10:03:51,119 INFO L231 Difference]: Finished difference. Result has 466 places, 582 transitions, 14225 flow [2023-08-30 10:03:51,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14029, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14225, PETRI_PLACES=466, PETRI_TRANSITIONS=582} [2023-08-30 10:03:51,120 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 389 predicate places. [2023-08-30 10:03:51,120 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 582 transitions, 14225 flow [2023-08-30 10:03:51,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.6) internal successors, (1656), 10 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:51,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:03:51,121 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:03:51,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-08-30 10:03:51,121 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:03:51,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:03:51,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1248448801, now seen corresponding path program 3 times [2023-08-30 10:03:51,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:03:51,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494291333] [2023-08-30 10:03:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:03:51,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:03:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:03:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:03:51,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:03:51,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494291333] [2023-08-30 10:03:51,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494291333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:03:51,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:03:51,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 10:03:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727301814] [2023-08-30 10:03:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:03:51,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:03:51,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:03:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:03:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:03:51,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:03:51,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 582 transitions, 14225 flow. Second operand has 10 states, 10 states have (on average 165.6) internal successors, (1656), 10 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:51,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:03:51,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:03:51,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:03:57,241 INFO L130 PetriNetUnfolder]: 12166/21509 cut-off events. [2023-08-30 10:03:57,241 INFO L131 PetriNetUnfolder]: For 679501/679582 co-relation queries the response was YES. [2023-08-30 10:03:57,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153902 conditions, 21509 events. 12166/21509 cut-off events. For 679501/679582 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 181026 event pairs, 2471 based on Foata normal form. 33/21519 useless extension candidates. Maximal degree in co-relation 153742. Up to 19708 conditions per place. [2023-08-30 10:03:57,506 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 624 selfloop transitions, 24 changer transitions 0/655 dead transitions. [2023-08-30 10:03:57,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 655 transitions, 16024 flow [2023-08-30 10:03:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:03:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:03:57,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2405 transitions. [2023-08-30 10:03:57,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443890734588409 [2023-08-30 10:03:57,508 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2405 transitions. [2023-08-30 10:03:57,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2405 transitions. [2023-08-30 10:03:57,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:03:57,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2405 transitions. [2023-08-30 10:03:57,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 171.78571428571428) internal successors, (2405), 14 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:57,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:57,512 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:03:57,512 INFO L175 Difference]: Start difference. First operand has 466 places, 582 transitions, 14225 flow. Second operand 14 states and 2405 transitions. [2023-08-30 10:03:57,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 655 transitions, 16024 flow [2023-08-30 10:04:02,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 655 transitions, 15970 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-08-30 10:04:02,865 INFO L231 Difference]: Finished difference. Result has 477 places, 586 transitions, 14364 flow [2023-08-30 10:04:02,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14171, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14364, PETRI_PLACES=477, PETRI_TRANSITIONS=586} [2023-08-30 10:04:02,866 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 400 predicate places. [2023-08-30 10:04:02,866 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 586 transitions, 14364 flow [2023-08-30 10:04:02,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.6) internal successors, (1656), 10 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:02,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:04:02,866 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:04:02,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-08-30 10:04:02,867 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:04:02,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:04:02,867 INFO L85 PathProgramCache]: Analyzing trace with hash -604480181, now seen corresponding path program 4 times [2023-08-30 10:04:02,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:04:02,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913266209] [2023-08-30 10:04:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:04:02,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:04:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:04:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:04:02,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:04:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913266209] [2023-08-30 10:04:02,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913266209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:04:02,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:04:02,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 10:04:02,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325459452] [2023-08-30 10:04:02,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:04:02,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:04:02,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:04:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:04:02,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:04:03,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:04:03,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 586 transitions, 14364 flow. Second operand has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:03,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:04:03,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:04:03,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:04:08,899 INFO L130 PetriNetUnfolder]: 12148/21517 cut-off events. [2023-08-30 10:04:08,899 INFO L131 PetriNetUnfolder]: For 672481/672580 co-relation queries the response was YES. [2023-08-30 10:04:09,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153918 conditions, 21517 events. 12148/21517 cut-off events. For 672481/672580 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 181480 event pairs, 2465 based on Foata normal form. 33/21506 useless extension candidates. Maximal degree in co-relation 153754. Up to 19731 conditions per place. [2023-08-30 10:04:09,198 INFO L137 encePairwiseOnDemand]: 370/387 looper letters, 619 selfloop transitions, 23 changer transitions 1/650 dead transitions. [2023-08-30 10:04:09,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 650 transitions, 16097 flow [2023-08-30 10:04:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:04:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:04:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2070 transitions. [2023-08-30 10:04:09,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44573643410852715 [2023-08-30 10:04:09,199 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2070 transitions. [2023-08-30 10:04:09,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2070 transitions. [2023-08-30 10:04:09,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:04:09,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2070 transitions. [2023-08-30 10:04:09,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 172.5) internal successors, (2070), 12 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:09,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:09,203 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:09,203 INFO L175 Difference]: Start difference. First operand has 477 places, 586 transitions, 14364 flow. Second operand 12 states and 2070 transitions. [2023-08-30 10:04:09,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 650 transitions, 16097 flow [2023-08-30 10:04:14,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 650 transitions, 16027 flow, removed 19 selfloop flow, removed 8 redundant places. [2023-08-30 10:04:14,833 INFO L231 Difference]: Finished difference. Result has 482 places, 588 transitions, 14422 flow [2023-08-30 10:04:14,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14294, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14422, PETRI_PLACES=482, PETRI_TRANSITIONS=588} [2023-08-30 10:04:14,834 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 405 predicate places. [2023-08-30 10:04:14,834 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 588 transitions, 14422 flow [2023-08-30 10:04:14,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:14,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:04:14,834 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:04:14,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2023-08-30 10:04:14,834 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:04:14,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:04:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash 525984511, now seen corresponding path program 4 times [2023-08-30 10:04:14,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:04:14,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898392376] [2023-08-30 10:04:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:04:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:04:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:04:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:04:14,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:04:14,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898392376] [2023-08-30 10:04:14,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898392376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:04:14,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:04:14,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 10:04:14,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748660544] [2023-08-30 10:04:14,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:04:14,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:04:14,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:04:14,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:04:14,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:04:15,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:04:15,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 588 transitions, 14422 flow. Second operand has 10 states, 10 states have (on average 165.6) internal successors, (1656), 10 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:15,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:04:15,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:04:15,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:04:20,851 INFO L130 PetriNetUnfolder]: 12107/21479 cut-off events. [2023-08-30 10:04:20,852 INFO L131 PetriNetUnfolder]: For 664476/664575 co-relation queries the response was YES. [2023-08-30 10:04:21,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152976 conditions, 21479 events. 12107/21479 cut-off events. For 664476/664575 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 181467 event pairs, 2465 based on Foata normal form. 33/21468 useless extension candidates. Maximal degree in co-relation 152810. Up to 19693 conditions per place. [2023-08-30 10:04:21,152 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 621 selfloop transitions, 24 changer transitions 2/654 dead transitions. [2023-08-30 10:04:21,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 654 transitions, 16176 flow [2023-08-30 10:04:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:04:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:04:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2238 transitions. [2023-08-30 10:04:21,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44484197972570066 [2023-08-30 10:04:21,155 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2238 transitions. [2023-08-30 10:04:21,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2238 transitions. [2023-08-30 10:04:21,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:04:21,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2238 transitions. [2023-08-30 10:04:21,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 172.15384615384616) internal successors, (2238), 13 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:21,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:21,159 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:21,159 INFO L175 Difference]: Start difference. First operand has 482 places, 588 transitions, 14422 flow. Second operand 13 states and 2238 transitions. [2023-08-30 10:04:21,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 654 transitions, 16176 flow [2023-08-30 10:04:26,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 654 transitions, 16109 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-30 10:04:26,637 INFO L231 Difference]: Finished difference. Result has 487 places, 589 transitions, 14440 flow [2023-08-30 10:04:26,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14355, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14440, PETRI_PLACES=487, PETRI_TRANSITIONS=589} [2023-08-30 10:04:26,638 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 410 predicate places. [2023-08-30 10:04:26,638 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 589 transitions, 14440 flow [2023-08-30 10:04:26,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.6) internal successors, (1656), 10 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:26,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:04:26,638 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:04:26,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2023-08-30 10:04:26,639 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:04:26,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:04:26,639 INFO L85 PathProgramCache]: Analyzing trace with hash 942815825, now seen corresponding path program 1 times [2023-08-30 10:04:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:04:26,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731099111] [2023-08-30 10:04:26,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:04:26,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:04:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:04:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:04:26,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:04:26,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731099111] [2023-08-30 10:04:26,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731099111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:04:26,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572672206] [2023-08-30 10:04:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:04:26,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:04:26,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:04:26,709 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:04:26,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:04:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:04:26,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:04:26,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:04:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:04:26,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:04:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572672206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:04:26,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:04:26,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-30 10:04:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704067796] [2023-08-30 10:04:26,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:04:26,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:04:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:04:26,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:04:26,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:04:26,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 387 [2023-08-30 10:04:26,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 589 transitions, 14440 flow. Second operand has 6 states, 6 states have (on average 174.16666666666666) internal successors, (1045), 6 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:26,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:04:26,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 387 [2023-08-30 10:04:26,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:04:32,653 INFO L130 PetriNetUnfolder]: 11593/20807 cut-off events. [2023-08-30 10:04:32,654 INFO L131 PetriNetUnfolder]: For 658743/658893 co-relation queries the response was YES. [2023-08-30 10:04:32,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148266 conditions, 20807 events. 11593/20807 cut-off events. For 658743/658893 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 177072 event pairs, 2195 based on Foata normal form. 93/20814 useless extension candidates. Maximal degree in co-relation 148098. Up to 11279 conditions per place. [2023-08-30 10:04:33,220 INFO L137 encePairwiseOnDemand]: 370/387 looper letters, 511 selfloop transitions, 185 changer transitions 54/772 dead transitions. [2023-08-30 10:04:33,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 772 transitions, 18878 flow [2023-08-30 10:04:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:04:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:04:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1517 transitions. [2023-08-30 10:04:33,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899870801033592 [2023-08-30 10:04:33,222 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1517 transitions. [2023-08-30 10:04:33,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1517 transitions. [2023-08-30 10:04:33,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:04:33,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1517 transitions. [2023-08-30 10:04:33,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 189.625) internal successors, (1517), 8 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:33,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 387.0) internal successors, (3483), 9 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:33,225 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 387.0) internal successors, (3483), 9 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:33,225 INFO L175 Difference]: Start difference. First operand has 487 places, 589 transitions, 14440 flow. Second operand 8 states and 1517 transitions. [2023-08-30 10:04:33,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 772 transitions, 18878 flow [2023-08-30 10:04:38,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 772 transitions, 18558 flow, removed 65 selfloop flow, removed 21 redundant places. [2023-08-30 10:04:38,249 INFO L231 Difference]: Finished difference. Result has 470 places, 594 transitions, 15087 flow [2023-08-30 10:04:38,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14024, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15087, PETRI_PLACES=470, PETRI_TRANSITIONS=594} [2023-08-30 10:04:38,249 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 393 predicate places. [2023-08-30 10:04:38,250 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 594 transitions, 15087 flow [2023-08-30 10:04:38,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.16666666666666) internal successors, (1045), 6 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:38,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:04:38,250 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:04:38,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 10:04:38,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2023-08-30 10:04:38,454 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:04:38,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:04:38,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1473281460, now seen corresponding path program 1 times [2023-08-30 10:04:38,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:04:38,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360631804] [2023-08-30 10:04:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:04:38,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:04:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:04:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:04:38,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:04:38,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360631804] [2023-08-30 10:04:38,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360631804] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:04:38,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587055428] [2023-08-30 10:04:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:04:38,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:04:38,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:04:38,529 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:04:38,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:04:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:04:38,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:04:38,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:04:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:04:38,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:04:38,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587055428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:04:38,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:04:38,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2023-08-30 10:04:38,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080009839] [2023-08-30 10:04:38,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:04:38,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:04:38,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:04:38,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:04:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:04:38,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 387 [2023-08-30 10:04:38,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 594 transitions, 15087 flow. Second operand has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:38,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:04:38,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 387 [2023-08-30 10:04:38,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:04:44,394 INFO L130 PetriNetUnfolder]: 11347/20628 cut-off events. [2023-08-30 10:04:44,394 INFO L131 PetriNetUnfolder]: For 662134/662209 co-relation queries the response was YES. [2023-08-30 10:04:44,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149523 conditions, 20628 events. 11347/20628 cut-off events. For 662134/662209 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 177747 event pairs, 2761 based on Foata normal form. 111/20665 useless extension candidates. Maximal degree in co-relation 149359. Up to 7322 conditions per place. [2023-08-30 10:04:44,668 INFO L137 encePairwiseOnDemand]: 372/387 looper letters, 377 selfloop transitions, 303 changer transitions 24/726 dead transitions. [2023-08-30 10:04:44,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 726 transitions, 17910 flow [2023-08-30 10:04:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:04:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:04:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1377 transitions. [2023-08-30 10:04:44,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083056478405316 [2023-08-30 10:04:44,669 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1377 transitions. [2023-08-30 10:04:44,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1377 transitions. [2023-08-30 10:04:44,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:04:44,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1377 transitions. [2023-08-30 10:04:44,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.71428571428572) internal successors, (1377), 7 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:44,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:44,672 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 387.0) internal successors, (3096), 8 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:44,672 INFO L175 Difference]: Start difference. First operand has 470 places, 594 transitions, 15087 flow. Second operand 7 states and 1377 transitions. [2023-08-30 10:04:44,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 726 transitions, 17910 flow [2023-08-30 10:04:51,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 726 transitions, 17484 flow, removed 61 selfloop flow, removed 6 redundant places. [2023-08-30 10:04:51,359 INFO L231 Difference]: Finished difference. Result has 465 places, 589 transitions, 15312 flow [2023-08-30 10:04:51,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=14514, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15312, PETRI_PLACES=465, PETRI_TRANSITIONS=589} [2023-08-30 10:04:51,360 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 388 predicate places. [2023-08-30 10:04:51,360 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 589 transitions, 15312 flow [2023-08-30 10:04:51,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:51,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:04:51,360 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:04:51,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 10:04:51,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2023-08-30 10:04:51,567 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:04:51,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:04:51,567 INFO L85 PathProgramCache]: Analyzing trace with hash -594935429, now seen corresponding path program 5 times [2023-08-30 10:04:51,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:04:51,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379621764] [2023-08-30 10:04:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:04:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:04:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:04:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:04:51,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:04:51,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379621764] [2023-08-30 10:04:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379621764] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:04:51,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923262953] [2023-08-30 10:04:51,642 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 10:04:51,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:04:51,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:04:51,643 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:04:51,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:04:51,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 10:04:51,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:04:51,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 10:04:51,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:04:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:04:51,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:04:51,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923262953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:04:51,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:04:51,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2023-08-30 10:04:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820968882] [2023-08-30 10:04:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:04:51,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:04:51,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:04:51,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:04:51,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-30 10:04:51,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 387 [2023-08-30 10:04:51,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 589 transitions, 15312 flow. Second operand has 9 states, 9 states have (on average 164.77777777777777) internal successors, (1483), 9 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:51,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:04:51,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 387 [2023-08-30 10:04:51,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:04:58,242 INFO L130 PetriNetUnfolder]: 11736/21031 cut-off events. [2023-08-30 10:04:58,243 INFO L131 PetriNetUnfolder]: For 648662/648755 co-relation queries the response was YES. [2023-08-30 10:04:58,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152938 conditions, 21031 events. 11736/21031 cut-off events. For 648662/648755 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 179467 event pairs, 1231 based on Foata normal form. 90/21095 useless extension candidates. Maximal degree in co-relation 152775. Up to 8871 conditions per place. [2023-08-30 10:04:58,565 INFO L137 encePairwiseOnDemand]: 371/387 looper letters, 390 selfloop transitions, 359 changer transitions 13/769 dead transitions. [2023-08-30 10:04:58,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 769 transitions, 18373 flow [2023-08-30 10:04:58,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 10:04:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 10:04:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3134 transitions. [2023-08-30 10:04:58,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498995119150158 [2023-08-30 10:04:58,568 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3134 transitions. [2023-08-30 10:04:58,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3134 transitions. [2023-08-30 10:04:58,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:04:58,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3134 transitions. [2023-08-30 10:04:58,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 174.11111111111111) internal successors, (3134), 18 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:58,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 387.0) internal successors, (7353), 19 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:58,573 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 387.0) internal successors, (7353), 19 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:04:58,573 INFO L175 Difference]: Start difference. First operand has 465 places, 589 transitions, 15312 flow. Second operand 18 states and 3134 transitions. [2023-08-30 10:04:58,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 769 transitions, 18373 flow [2023-08-30 10:05:04,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 769 transitions, 18208 flow, removed 49 selfloop flow, removed 2 redundant places. [2023-08-30 10:05:04,806 INFO L231 Difference]: Finished difference. Result has 483 places, 594 transitions, 16372 flow [2023-08-30 10:05:04,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=15163, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=16372, PETRI_PLACES=483, PETRI_TRANSITIONS=594} [2023-08-30 10:05:04,807 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 406 predicate places. [2023-08-30 10:05:04,807 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 594 transitions, 16372 flow [2023-08-30 10:05:04,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 164.77777777777777) internal successors, (1483), 9 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:04,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:04,807 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:05:04,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 10:05:05,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:05:05,009 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:05:05,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash -552238819, now seen corresponding path program 1 times [2023-08-30 10:05:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:05,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27231341] [2023-08-30 10:05:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:05:05,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27231341] [2023-08-30 10:05:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27231341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 10:05:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010724170] [2023-08-30 10:05:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:05,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:05:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:05:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:05:05,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:05:05,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 594 transitions, 16372 flow. Second operand has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:05,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:05,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:05:05,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:11,316 INFO L130 PetriNetUnfolder]: 11791/21065 cut-off events. [2023-08-30 10:05:11,316 INFO L131 PetriNetUnfolder]: For 680989/681073 co-relation queries the response was YES. [2023-08-30 10:05:11,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159995 conditions, 21065 events. 11791/21065 cut-off events. For 680989/681073 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 179202 event pairs, 2465 based on Foata normal form. 30/21051 useless extension candidates. Maximal degree in co-relation 159829. Up to 19431 conditions per place. [2023-08-30 10:05:11,637 INFO L137 encePairwiseOnDemand]: 371/387 looper letters, 626 selfloop transitions, 22 changer transitions 0/655 dead transitions. [2023-08-30 10:05:11,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 655 transitions, 18085 flow [2023-08-30 10:05:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:05:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:05:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2231 transitions. [2023-08-30 10:05:11,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434506062413039 [2023-08-30 10:05:11,639 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2231 transitions. [2023-08-30 10:05:11,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2231 transitions. [2023-08-30 10:05:11,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:11,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2231 transitions. [2023-08-30 10:05:11,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 171.6153846153846) internal successors, (2231), 13 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:11,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:11,643 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:11,643 INFO L175 Difference]: Start difference. First operand has 483 places, 594 transitions, 16372 flow. Second operand 13 states and 2231 transitions. [2023-08-30 10:05:11,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 655 transitions, 18085 flow [2023-08-30 10:05:17,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 655 transitions, 17934 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-08-30 10:05:17,904 INFO L231 Difference]: Finished difference. Result has 488 places, 598 transitions, 16422 flow [2023-08-30 10:05:17,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=16221, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=16422, PETRI_PLACES=488, PETRI_TRANSITIONS=598} [2023-08-30 10:05:17,904 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 411 predicate places. [2023-08-30 10:05:17,904 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 598 transitions, 16422 flow [2023-08-30 10:05:17,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:17,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:17,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:05:17,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2023-08-30 10:05:17,905 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:05:17,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:17,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2062050509, now seen corresponding path program 6 times [2023-08-30 10:05:17,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:17,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262408462] [2023-08-30 10:05:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:17,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:05:17,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:17,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262408462] [2023-08-30 10:05:17,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262408462] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:17,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:17,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:05:17,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208014924] [2023-08-30 10:05:17,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:17,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:05:17,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:17,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:05:17,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:05:18,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:05:18,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 598 transitions, 16422 flow. Second operand has 9 states, 9 states have (on average 165.77777777777777) internal successors, (1492), 9 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:18,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:18,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:05:18,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:24,416 INFO L130 PetriNetUnfolder]: 12218/21822 cut-off events. [2023-08-30 10:05:24,416 INFO L131 PetriNetUnfolder]: For 711600/711696 co-relation queries the response was YES. [2023-08-30 10:05:24,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166607 conditions, 21822 events. 12218/21822 cut-off events. For 711600/711696 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 186712 event pairs, 2462 based on Foata normal form. 60/21838 useless extension candidates. Maximal degree in co-relation 166439. Up to 18877 conditions per place. [2023-08-30 10:05:24,763 INFO L137 encePairwiseOnDemand]: 372/387 looper letters, 645 selfloop transitions, 55 changer transitions 13/720 dead transitions. [2023-08-30 10:05:24,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 720 transitions, 19114 flow [2023-08-30 10:05:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:05:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:05:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2422 transitions. [2023-08-30 10:05:24,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2023-08-30 10:05:24,765 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2422 transitions. [2023-08-30 10:05:24,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2422 transitions. [2023-08-30 10:05:24,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:24,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2422 transitions. [2023-08-30 10:05:24,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:24,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:24,769 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:24,769 INFO L175 Difference]: Start difference. First operand has 488 places, 598 transitions, 16422 flow. Second operand 14 states and 2422 transitions. [2023-08-30 10:05:24,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 720 transitions, 19114 flow [2023-08-30 10:05:31,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 720 transitions, 19013 flow, removed 29 selfloop flow, removed 8 redundant places. [2023-08-30 10:05:31,530 INFO L231 Difference]: Finished difference. Result has 499 places, 617 transitions, 17061 flow [2023-08-30 10:05:31,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=16321, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=17061, PETRI_PLACES=499, PETRI_TRANSITIONS=617} [2023-08-30 10:05:31,531 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 422 predicate places. [2023-08-30 10:05:31,531 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 617 transitions, 17061 flow [2023-08-30 10:05:31,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 165.77777777777777) internal successors, (1492), 9 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:31,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:31,532 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:05:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2023-08-30 10:05:31,532 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:05:31,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1009198559, now seen corresponding path program 1 times [2023-08-30 10:05:31,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678938034] [2023-08-30 10:05:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:05:31,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:31,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678938034] [2023-08-30 10:05:31,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678938034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:31,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:31,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:05:31,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391382045] [2023-08-30 10:05:31,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:31,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:05:31,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:05:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:05:31,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:05:31,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 617 transitions, 17061 flow. Second operand has 9 states, 9 states have (on average 165.77777777777777) internal successors, (1492), 9 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:31,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:31,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:05:31,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:38,169 INFO L130 PetriNetUnfolder]: 12398/22167 cut-off events. [2023-08-30 10:05:38,169 INFO L131 PetriNetUnfolder]: For 750027/750111 co-relation queries the response was YES. [2023-08-30 10:05:38,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170219 conditions, 22167 events. 12398/22167 cut-off events. For 750027/750111 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 190457 event pairs, 2414 based on Foata normal form. 75/22198 useless extension candidates. Maximal degree in co-relation 170045. Up to 19675 conditions per place. [2023-08-30 10:05:38,524 INFO L137 encePairwiseOnDemand]: 371/387 looper letters, 647 selfloop transitions, 47 changer transitions 12/713 dead transitions. [2023-08-30 10:05:38,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 713 transitions, 19290 flow [2023-08-30 10:05:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:05:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:05:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2412 transitions. [2023-08-30 10:05:38,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44518272425249167 [2023-08-30 10:05:38,526 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2412 transitions. [2023-08-30 10:05:38,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2412 transitions. [2023-08-30 10:05:38,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:38,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2412 transitions. [2023-08-30 10:05:38,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 172.28571428571428) internal successors, (2412), 14 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:38,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:38,530 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 387.0) internal successors, (5805), 15 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:38,530 INFO L175 Difference]: Start difference. First operand has 499 places, 617 transitions, 17061 flow. Second operand 14 states and 2412 transitions. [2023-08-30 10:05:38,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 713 transitions, 19290 flow [2023-08-30 10:05:45,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 713 transitions, 19212 flow, removed 34 selfloop flow, removed 5 redundant places. [2023-08-30 10:05:45,787 INFO L231 Difference]: Finished difference. Result has 510 places, 625 transitions, 17410 flow [2023-08-30 10:05:45,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=16983, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=17410, PETRI_PLACES=510, PETRI_TRANSITIONS=625} [2023-08-30 10:05:45,788 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 433 predicate places. [2023-08-30 10:05:45,788 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 625 transitions, 17410 flow [2023-08-30 10:05:45,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 165.77777777777777) internal successors, (1492), 9 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:45,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:05:45,788 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:05:45,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2023-08-30 10:05:45,788 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:05:45,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:05:45,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1053269276, now seen corresponding path program 1 times [2023-08-30 10:05:45,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:05:45,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466161297] [2023-08-30 10:05:45,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:05:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:05:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:05:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:05:45,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:05:45,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466161297] [2023-08-30 10:05:45,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466161297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:05:45,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:05:45,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 10:05:45,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005090771] [2023-08-30 10:05:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:05:45,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:05:45,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:05:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:05:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:05:45,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:05:45,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 625 transitions, 17410 flow. Second operand has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:45,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:05:45,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:05:45,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:05:52,594 INFO L130 PetriNetUnfolder]: 12420/22177 cut-off events. [2023-08-30 10:05:52,594 INFO L131 PetriNetUnfolder]: For 741668/741752 co-relation queries the response was YES. [2023-08-30 10:05:52,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171661 conditions, 22177 events. 12420/22177 cut-off events. For 741668/741752 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 190290 event pairs, 2615 based on Foata normal form. 27/22160 useless extension candidates. Maximal degree in co-relation 171483. Up to 20470 conditions per place. [2023-08-30 10:05:53,223 INFO L137 encePairwiseOnDemand]: 371/387 looper letters, 662 selfloop transitions, 22 changer transitions 0/691 dead transitions. [2023-08-30 10:05:53,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 691 transitions, 19229 flow [2023-08-30 10:05:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:05:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:05:53,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2236 transitions. [2023-08-30 10:05:53,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 10:05:53,225 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2236 transitions. [2023-08-30 10:05:53,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2236 transitions. [2023-08-30 10:05:53,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:05:53,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2236 transitions. [2023-08-30 10:05:53,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 172.0) internal successors, (2236), 13 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:53,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:53,230 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:05:53,230 INFO L175 Difference]: Start difference. First operand has 510 places, 625 transitions, 17410 flow. Second operand 13 states and 2236 transitions. [2023-08-30 10:05:53,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 691 transitions, 19229 flow [2023-08-30 10:06:00,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 691 transitions, 19161 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-30 10:06:00,692 INFO L231 Difference]: Finished difference. Result has 516 places, 629 transitions, 17551 flow [2023-08-30 10:06:00,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=17342, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17551, PETRI_PLACES=516, PETRI_TRANSITIONS=629} [2023-08-30 10:06:00,692 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 439 predicate places. [2023-08-30 10:06:00,692 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 629 transitions, 17551 flow [2023-08-30 10:06:00,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:00,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:00,693 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:06:00,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2023-08-30 10:06:00,693 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:06:00,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1699458716, now seen corresponding path program 2 times [2023-08-30 10:06:00,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:00,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066659547] [2023-08-30 10:06:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:00,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:06:00,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:00,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066659547] [2023-08-30 10:06:00,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066659547] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:00,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682522902] [2023-08-30 10:06:00,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:06:00,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:00,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:00,770 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:06:00,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 10:06:00,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:06:00,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:06:00,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 10:06:00,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:06:01,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:01,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682522902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:01,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:01,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2023-08-30 10:06:01,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148271091] [2023-08-30 10:06:01,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:01,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:06:01,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:01,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:06:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-30 10:06:01,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 387 [2023-08-30 10:06:01,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 629 transitions, 17551 flow. Second operand has 9 states, 9 states have (on average 164.77777777777777) internal successors, (1483), 9 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:01,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:01,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 387 [2023-08-30 10:06:01,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:08,192 INFO L130 PetriNetUnfolder]: 12474/22379 cut-off events. [2023-08-30 10:06:08,192 INFO L131 PetriNetUnfolder]: For 775516/775606 co-relation queries the response was YES. [2023-08-30 10:06:08,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173157 conditions, 22379 events. 12474/22379 cut-off events. For 775516/775606 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 193324 event pairs, 1371 based on Foata normal form. 60/22413 useless extension candidates. Maximal degree in co-relation 172977. Up to 7578 conditions per place. [2023-08-30 10:06:08,530 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 459 selfloop transitions, 354 changer transitions 5/825 dead transitions. [2023-08-30 10:06:08,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 825 transitions, 20611 flow [2023-08-30 10:06:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:06:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:06:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3477 transitions. [2023-08-30 10:06:08,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44922480620155036 [2023-08-30 10:06:08,532 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3477 transitions. [2023-08-30 10:06:08,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3477 transitions. [2023-08-30 10:06:08,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:08,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3477 transitions. [2023-08-30 10:06:08,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 173.85) internal successors, (3477), 20 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 387.0) internal successors, (8127), 21 states have internal predecessors, (8127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,537 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 387.0) internal successors, (8127), 21 states have internal predecessors, (8127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:08,538 INFO L175 Difference]: Start difference. First operand has 516 places, 629 transitions, 17551 flow. Second operand 20 states and 3477 transitions. [2023-08-30 10:06:08,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 825 transitions, 20611 flow [2023-08-30 10:06:16,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 825 transitions, 20524 flow, removed 29 selfloop flow, removed 8 redundant places. [2023-08-30 10:06:16,171 INFO L231 Difference]: Finished difference. Result has 531 places, 633 transitions, 18601 flow [2023-08-30 10:06:16,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=17464, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=18601, PETRI_PLACES=531, PETRI_TRANSITIONS=633} [2023-08-30 10:06:16,172 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 454 predicate places. [2023-08-30 10:06:16,172 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 633 transitions, 18601 flow [2023-08-30 10:06:16,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 164.77777777777777) internal successors, (1483), 9 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:16,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:16,173 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:06:16,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 10:06:16,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:16,379 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:06:16,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1549137653, now seen corresponding path program 7 times [2023-08-30 10:06:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:16,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028538683] [2023-08-30 10:06:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:06:16,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:16,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028538683] [2023-08-30 10:06:16,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028538683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:16,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:16,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:06:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126619809] [2023-08-30 10:06:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:06:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:16,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:06:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:06:16,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:06:16,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 633 transitions, 18601 flow. Second operand has 9 states, 9 states have (on average 165.77777777777777) internal successors, (1492), 9 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:16,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:16,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:06:16,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:23,354 INFO L130 PetriNetUnfolder]: 12420/22233 cut-off events. [2023-08-30 10:06:23,354 INFO L131 PetriNetUnfolder]: For 818330/818432 co-relation queries the response was YES. [2023-08-30 10:06:23,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178882 conditions, 22233 events. 12420/22233 cut-off events. For 818330/818432 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 191277 event pairs, 2588 based on Foata normal form. 78/22267 useless extension candidates. Maximal degree in co-relation 178698. Up to 19784 conditions per place. [2023-08-30 10:06:23,774 INFO L137 encePairwiseOnDemand]: 372/387 looper letters, 631 selfloop transitions, 43 changer transitions 14/695 dead transitions. [2023-08-30 10:06:23,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 695 transitions, 20041 flow [2023-08-30 10:06:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:06:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:06:23,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2238 transitions. [2023-08-30 10:06:23,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44484197972570066 [2023-08-30 10:06:23,775 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2238 transitions. [2023-08-30 10:06:23,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2238 transitions. [2023-08-30 10:06:23,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:23,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2238 transitions. [2023-08-30 10:06:23,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 172.15384615384616) internal successors, (2238), 13 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,779 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,779 INFO L175 Difference]: Start difference. First operand has 531 places, 633 transitions, 18601 flow. Second operand 13 states and 2238 transitions. [2023-08-30 10:06:23,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 695 transitions, 20041 flow [2023-08-30 10:06:32,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 695 transitions, 19654 flow, removed 17 selfloop flow, removed 12 redundant places. [2023-08-30 10:06:32,078 INFO L231 Difference]: Finished difference. Result has 533 places, 623 transitions, 17856 flow [2023-08-30 10:06:32,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=17565, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17856, PETRI_PLACES=533, PETRI_TRANSITIONS=623} [2023-08-30 10:06:32,079 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 456 predicate places. [2023-08-30 10:06:32,079 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 623 transitions, 17856 flow [2023-08-30 10:06:32,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 165.77777777777777) internal successors, (1492), 9 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:32,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:32,079 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:06:32,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2023-08-30 10:06:32,079 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:06:32,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1258943779, now seen corresponding path program 2 times [2023-08-30 10:06:32,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:32,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538393849] [2023-08-30 10:06:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:32,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:06:32,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538393849] [2023-08-30 10:06:32,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538393849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523739375] [2023-08-30 10:06:32,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:06:32,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:32,161 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:06:32,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 10:06:32,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:06:32,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:06:32,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 10:06:32,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:06:32,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:32,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523739375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:32,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:32,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2023-08-30 10:06:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238872972] [2023-08-30 10:06:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:32,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:06:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:06:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-30 10:06:32,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 387 [2023-08-30 10:06:32,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 623 transitions, 17856 flow. Second operand has 9 states, 9 states have (on average 164.77777777777777) internal successors, (1483), 9 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:32,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:32,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 387 [2023-08-30 10:06:32,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:39,717 INFO L130 PetriNetUnfolder]: 12553/22465 cut-off events. [2023-08-30 10:06:39,717 INFO L131 PetriNetUnfolder]: For 791278/791365 co-relation queries the response was YES. [2023-08-30 10:06:40,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179856 conditions, 22465 events. 12553/22465 cut-off events. For 791278/791365 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 193916 event pairs, 1316 based on Foata normal form. 66/22507 useless extension candidates. Maximal degree in co-relation 179669. Up to 8462 conditions per place. [2023-08-30 10:06:40,104 INFO L137 encePairwiseOnDemand]: 369/387 looper letters, 462 selfloop transitions, 360 changer transitions 7/836 dead transitions. [2023-08-30 10:06:40,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 836 transitions, 21641 flow [2023-08-30 10:06:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:06:40,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:06:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3479 transitions. [2023-08-30 10:06:40,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44948320413436693 [2023-08-30 10:06:40,106 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3479 transitions. [2023-08-30 10:06:40,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3479 transitions. [2023-08-30 10:06:40,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:40,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3479 transitions. [2023-08-30 10:06:40,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 173.95) internal successors, (3479), 20 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:40,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 387.0) internal successors, (8127), 21 states have internal predecessors, (8127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:40,112 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 387.0) internal successors, (8127), 21 states have internal predecessors, (8127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:40,113 INFO L175 Difference]: Start difference. First operand has 533 places, 623 transitions, 17856 flow. Second operand 20 states and 3479 transitions. [2023-08-30 10:06:40,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 836 transitions, 21641 flow [2023-08-30 10:06:48,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 836 transitions, 21509 flow, removed 28 selfloop flow, removed 11 redundant places. [2023-08-30 10:06:48,074 INFO L231 Difference]: Finished difference. Result has 548 places, 653 transitions, 19855 flow [2023-08-30 10:06:48,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=17724, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=19855, PETRI_PLACES=548, PETRI_TRANSITIONS=653} [2023-08-30 10:06:48,074 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 471 predicate places. [2023-08-30 10:06:48,074 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 653 transitions, 19855 flow [2023-08-30 10:06:48,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 164.77777777777777) internal successors, (1483), 9 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:48,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:48,075 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:06:48,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 10:06:48,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:48,275 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:06:48,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash -77881162, now seen corresponding path program 1 times [2023-08-30 10:06:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:48,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188695135] [2023-08-30 10:06:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:06:48,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:48,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188695135] [2023-08-30 10:06:48,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188695135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:48,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:48,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 10:06:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205290380] [2023-08-30 10:06:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:48,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 10:06:48,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 10:06:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-30 10:06:48,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:06:48,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 653 transitions, 19855 flow. Second operand has 9 states, 9 states have (on average 165.77777777777777) internal successors, (1492), 9 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:48,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:48,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:06:48,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:55,963 INFO L130 PetriNetUnfolder]: 12726/22750 cut-off events. [2023-08-30 10:06:55,963 INFO L131 PetriNetUnfolder]: For 924002/924092 co-relation queries the response was YES. [2023-08-30 10:06:56,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191937 conditions, 22750 events. 12726/22750 cut-off events. For 924002/924092 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 196637 event pairs, 2642 based on Foata normal form. 51/22772 useless extension candidates. Maximal degree in co-relation 191745. Up to 20290 conditions per place. [2023-08-30 10:06:56,351 INFO L137 encePairwiseOnDemand]: 371/387 looper letters, 681 selfloop transitions, 48 changer transitions 10/746 dead transitions. [2023-08-30 10:06:56,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 746 transitions, 22279 flow [2023-08-30 10:06:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:06:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:06:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2250 transitions. [2023-08-30 10:06:56,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472271914132379 [2023-08-30 10:06:56,353 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2250 transitions. [2023-08-30 10:06:56,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2250 transitions. [2023-08-30 10:06:56,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:56,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2250 transitions. [2023-08-30 10:06:56,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 173.07692307692307) internal successors, (2250), 13 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:56,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:56,357 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 387.0) internal successors, (5418), 14 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:56,357 INFO L175 Difference]: Start difference. First operand has 548 places, 653 transitions, 19855 flow. Second operand 13 states and 2250 transitions. [2023-08-30 10:06:56,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 746 transitions, 22279 flow [2023-08-30 10:07:05,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 746 transitions, 22079 flow, removed 48 selfloop flow, removed 6 redundant places. [2023-08-30 10:07:05,125 INFO L231 Difference]: Finished difference. Result has 558 places, 662 transitions, 20084 flow [2023-08-30 10:07:05,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=19657, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20084, PETRI_PLACES=558, PETRI_TRANSITIONS=662} [2023-08-30 10:07:05,126 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 481 predicate places. [2023-08-30 10:07:05,126 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 662 transitions, 20084 flow [2023-08-30 10:07:05,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 165.77777777777777) internal successors, (1492), 9 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:05,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:05,126 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 10:07:05,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2023-08-30 10:07:05,127 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:07:05,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:05,127 INFO L85 PathProgramCache]: Analyzing trace with hash 131540315, now seen corresponding path program 3 times [2023-08-30 10:07:05,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:05,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563607251] [2023-08-30 10:07:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:05,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:07:05,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563607251] [2023-08-30 10:07:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563607251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:05,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 10:07:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439077794] [2023-08-30 10:07:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:05,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:07:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:07:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:07:05,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 387 [2023-08-30 10:07:05,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 662 transitions, 20084 flow. Second operand has 10 states, 10 states have (on average 165.5) internal successors, (1655), 10 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:05,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:05,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 387 [2023-08-30 10:07:05,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15