./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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_79-equ_racefree.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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:21:54,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:21:54,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:21:54,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:21:54,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:21:54,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:21:54,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:21:54,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:21:54,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:21:54,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:21:54,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:21:54,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:21:54,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:21:54,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:21:54,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:21:54,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:21:54,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:21:54,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:21:54,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:21:54,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:21:54,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:21:54,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:21:54,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:21:54,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:21:54,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:21:54,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:21:54,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:21:54,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:21:54,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:21:54,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:21:54,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:21:54,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:21:54,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:21:54,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:21:54,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:21:54,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:21:54,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:21:54,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:21:54,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:21:54,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:21:54,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:21:54,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:21:54,319 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:21:54,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:21:54,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:21:54,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:21:54,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:21:54,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:21:54,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:21:54,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:21:54,331 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:21:54,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:21:54,332 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:21:54,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:21:54,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:21:54,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:21:54,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:21:54,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:21:54,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:21:54,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:21:54,333 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:21:54,334 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:21:54,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:21:54,334 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:21:54,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:21:54,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:21:54,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:21:54,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:21:54,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:21:54,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:21:54,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:21:54,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:21:54,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:21:54,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:21:54,337 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:21:54,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:21:54,337 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:21:54,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:21:54,338 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:21:54,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:21:54,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:21:54,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:21:54,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:21:54,683 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:21:54,684 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:21:54,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-30 14:21:55,988 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:21:56,269 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:21:56,271 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-30 14:21:56,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda062026/8ec00709468643888a1bf9792dceb29f/FLAG67c2f2a33 [2023-08-30 14:21:56,310 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda062026/8ec00709468643888a1bf9792dceb29f [2023-08-30 14:21:56,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:21:56,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:21:56,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:21:56,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:21:56,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:21:56,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd6e2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56, skipping insertion in model container [2023-08-30 14:21:56,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:21:56,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:21:56,769 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_79-equ_racefree.i[47038,47051] [2023-08-30 14:21:56,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:21:56,814 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:21:56,841 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_79-equ_racefree.i[47038,47051] [2023-08-30 14:21:56,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:21:56,902 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:21:56,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56 WrapperNode [2023-08-30 14:21:56,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:21:56,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:21:56,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:21:56,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:21:56,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,959 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 220 [2023-08-30 14:21:56,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:21:56,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:21:56,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:21:56,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:21:56,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:56,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:21:56,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:21:56,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:21:56,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:21:56,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (1/1) ... [2023-08-30 14:21:57,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:21:57,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:57,026 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 14:21:57,030 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 14:21:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:21:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:21:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:21:57,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:21:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:21:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:21:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:21:57,054 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:21:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:21:57,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:21:57,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:21:57,056 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 14:21:57,202 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:21:57,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:21:57,523 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:21:57,531 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:21:57,532 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-30 14:21:57,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:57 BoogieIcfgContainer [2023-08-30 14:21:57,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:21:57,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:21:57,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:21:57,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:21:57,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:21:56" (1/3) ... [2023-08-30 14:21:57,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfe559c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:57, skipping insertion in model container [2023-08-30 14:21:57,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:56" (2/3) ... [2023-08-30 14:21:57,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfe559c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:57, skipping insertion in model container [2023-08-30 14:21:57,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:57" (3/3) ... [2023-08-30 14:21:57,542 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-08-30 14:21:57,550 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:21:57,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:21:57,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 14:21:57,559 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:21:57,619 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:21:57,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 14:21:57,795 INFO L130 PetriNetUnfolder]: 43/308 cut-off events. [2023-08-30 14:21:57,796 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:57,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 308 events. 43/308 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 985 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 14:21:57,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 231 transitions, 470 flow [2023-08-30 14:21:57,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 226 transitions, 460 flow [2023-08-30 14:21:57,817 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:57,830 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 226 transitions, 460 flow [2023-08-30 14:21:57,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 226 transitions, 460 flow [2023-08-30 14:21:57,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 226 transitions, 460 flow [2023-08-30 14:21:57,889 INFO L130 PetriNetUnfolder]: 41/303 cut-off events. [2023-08-30 14:21:57,889 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:57,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 303 events. 41/303 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 997 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-30 14:21:57,901 INFO L119 LiptonReduction]: Number of co-enabled transitions 11136 [2023-08-30 14:22:04,723 INFO L134 LiptonReduction]: Checked pairs total: 25291 [2023-08-30 14:22:04,723 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-08-30 14:22:04,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:22:04,741 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;@5c0ec6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:22:04,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:22:04,742 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 14:22:04,743 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:22:04,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:04,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 14:22:04,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:22:04,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:04,748 INFO L85 PathProgramCache]: Analyzing trace with hash 886, now seen corresponding path program 1 times [2023-08-30 14:22:04,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:04,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392392216] [2023-08-30 14:22:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:04,859 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 14:22:04,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:04,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392392216] [2023-08-30 14:22:04,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392392216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:04,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:04,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 14:22:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201689475] [2023-08-30 14:22:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:04,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 14:22:04,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 14:22:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 14:22:04,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 449 [2023-08-30 14:22:04,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 78 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:04,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:04,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 449 [2023-08-30 14:22:04,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:05,077 INFO L130 PetriNetUnfolder]: 450/973 cut-off events. [2023-08-30 14:22:05,077 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:22:05,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 973 events. 450/973 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5250 event pairs, 408 based on Foata normal form. 113/826 useless extension candidates. Maximal degree in co-relation 1801. Up to 884 conditions per place. [2023-08-30 14:22:05,083 INFO L137 encePairwiseOnDemand]: 424/449 looper letters, 46 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-08-30 14:22:05,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 206 flow [2023-08-30 14:22:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 14:22:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 14:22:05,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 477 transitions. [2023-08-30 14:22:05,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311804008908686 [2023-08-30 14:22:05,097 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 477 transitions. [2023-08-30 14:22:05,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 477 transitions. [2023-08-30 14:22:05,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:05,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 477 transitions. [2023-08-30 14:22:05,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.5) internal successors, (477), 2 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,109 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,111 INFO L175 Difference]: Start difference. First operand has 59 places, 78 transitions, 164 flow. Second operand 2 states and 477 transitions. [2023-08-30 14:22:05,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 206 flow [2023-08-30 14:22:05,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:22:05,116 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 114 flow [2023-08-30 14:22:05,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-30 14:22:05,120 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2023-08-30 14:22:05,120 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 114 flow [2023-08-30 14:22:05,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:05,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:22:05,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:22:05,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:22:05,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash 27283261, now seen corresponding path program 1 times [2023-08-30 14:22:05,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:05,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207812135] [2023-08-30 14:22:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:05,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:05,297 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 14:22:05,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:05,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207812135] [2023-08-30 14:22:05,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207812135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:05,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:05,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:22:05,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524586105] [2023-08-30 14:22:05,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:05,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:22:05,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:05,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:22:05,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:22:05,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 449 [2023-08-30 14:22:05,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 114 flow. Second operand has 3 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 14:22:05,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:05,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 449 [2023-08-30 14:22:05,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:05,517 INFO L130 PetriNetUnfolder]: 432/906 cut-off events. [2023-08-30 14:22:05,517 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:22:05,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 906 events. 432/906 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4863 event pairs, 224 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1739. Up to 739 conditions per place. [2023-08-30 14:22:05,523 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 60 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-30 14:22:05,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 274 flow [2023-08-30 14:22:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:22:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:22:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-30 14:22:05,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4892353377876763 [2023-08-30 14:22:05,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-30 14:22:05,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-30 14:22:05,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:05,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-30 14:22:05,530 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 14:22:05,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,535 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 114 flow. Second operand 3 states and 659 transitions. [2023-08-30 14:22:05,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 274 flow [2023-08-30 14:22:05,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:22:05,539 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 130 flow [2023-08-30 14:22:05,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 14:22:05,541 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2023-08-30 14:22:05,542 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 130 flow [2023-08-30 14:22:05,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 14:22:05,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:05,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:22:05,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:22:05,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:22:05,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:05,544 INFO L85 PathProgramCache]: Analyzing trace with hash 27283245, now seen corresponding path program 1 times [2023-08-30 14:22:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:05,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138890707] [2023-08-30 14:22:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:05,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:05,713 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 14:22:05,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:05,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138890707] [2023-08-30 14:22:05,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138890707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:05,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:05,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:22:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835658966] [2023-08-30 14:22:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:05,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:22:05,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:22:05,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:22:05,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 449 [2023-08-30 14:22:05,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:05,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 449 [2023-08-30 14:22:05,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:05,870 INFO L130 PetriNetUnfolder]: 393/851 cut-off events. [2023-08-30 14:22:05,870 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-30 14:22:05,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 851 events. 393/851 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5077 event pairs, 0 based on Foata normal form. 18/686 useless extension candidates. Maximal degree in co-relation 1758. Up to 774 conditions per place. [2023-08-30 14:22:05,875 INFO L137 encePairwiseOnDemand]: 446/449 looper letters, 60 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 14:22:05,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 286 flow [2023-08-30 14:22:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:22:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:22:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-08-30 14:22:05,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48997772828507796 [2023-08-30 14:22:05,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-08-30 14:22:05,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-08-30 14:22:05,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:05,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-08-30 14:22:05,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,883 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 130 flow. Second operand 3 states and 660 transitions. [2023-08-30 14:22:05,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 286 flow [2023-08-30 14:22:05,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:22:05,887 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 126 flow [2023-08-30 14:22:05,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-30 14:22:05,888 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2023-08-30 14:22:05,889 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 126 flow [2023-08-30 14:22:05,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:05,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:05,889 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:22:05,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:22:05,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:22:05,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:05,890 INFO L85 PathProgramCache]: Analyzing trace with hash 449460780, now seen corresponding path program 1 times [2023-08-30 14:22:05,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:05,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971661938] [2023-08-30 14:22:05,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:05,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:22:05,916 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:22:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:22:05,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:22:05,954 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:22:05,954 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:22:05,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:22:05,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:22:05,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:22:05,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:22:05,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:22:05,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:22:05,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:22:05,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:22:05,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:22:05,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:22:05,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:22:05,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:22:05,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:22:05,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:22:05,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:22:05,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:22:05,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:22:05,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:22:05,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:22:05,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:22:05,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:22:05,960 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 14:22:05,963 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:22:05,963 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:22:05,987 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:22:05,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 14:22:06,057 INFO L130 PetriNetUnfolder]: 72/487 cut-off events. [2023-08-30 14:22:06,058 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:22:06,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 487 events. 72/487 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1896 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 310. Up to 12 conditions per place. [2023-08-30 14:22:06,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 297 transitions, 612 flow [2023-08-30 14:22:06,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 295 transitions, 608 flow [2023-08-30 14:22:06,067 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:22:06,067 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 295 transitions, 608 flow [2023-08-30 14:22:06,067 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 295 transitions, 608 flow [2023-08-30 14:22:06,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 295 transitions, 608 flow [2023-08-30 14:22:06,127 INFO L130 PetriNetUnfolder]: 71/485 cut-off events. [2023-08-30 14:22:06,128 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:22:06,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 485 events. 71/485 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1920 event pairs, 0 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 308. Up to 12 conditions per place. [2023-08-30 14:22:06,151 INFO L119 LiptonReduction]: Number of co-enabled transitions 32896 [2023-08-30 14:22:13,973 INFO L134 LiptonReduction]: Checked pairs total: 87541 [2023-08-30 14:22:13,973 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-08-30 14:22:13,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:22:13,976 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;@5c0ec6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:22:13,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:22:13,977 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 14:22:13,977 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:22:13,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:13,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 14:22:13,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:22:13,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1521, now seen corresponding path program 1 times [2023-08-30 14:22:13,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:13,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854856820] [2023-08-30 14:22:13,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:13,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:13,983 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 14:22:13,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:13,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854856820] [2023-08-30 14:22:13,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854856820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:13,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:13,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 14:22:13,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691322650] [2023-08-30 14:22:13,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:13,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 14:22:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 14:22:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 14:22:13,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 571 [2023-08-30 14:22:13,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 114 transitions, 246 flow. Second operand has 2 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:13,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:13,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 571 [2023-08-30 14:22:13,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:16,071 INFO L130 PetriNetUnfolder]: 19032/29617 cut-off events. [2023-08-30 14:22:16,072 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2023-08-30 14:22:16,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57888 conditions, 29617 events. 19032/29617 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 213982 event pairs, 18054 based on Foata normal form. 3827/24654 useless extension candidates. Maximal degree in co-relation 25656. Up to 28153 conditions per place. [2023-08-30 14:22:16,290 INFO L137 encePairwiseOnDemand]: 537/571 looper letters, 69 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2023-08-30 14:22:16,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 316 flow [2023-08-30 14:22:16,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 14:22:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 14:22:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 613 transitions. [2023-08-30 14:22:16,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367775831873906 [2023-08-30 14:22:16,294 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 613 transitions. [2023-08-30 14:22:16,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 613 transitions. [2023-08-30 14:22:16,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:16,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 613 transitions. [2023-08-30 14:22:16,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 306.5) internal successors, (613), 2 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:16,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:16,300 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:16,300 INFO L175 Difference]: Start difference. First operand has 84 places, 114 transitions, 246 flow. Second operand 2 states and 613 transitions. [2023-08-30 14:22:16,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 316 flow [2023-08-30 14:22:16,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:22:16,304 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 178 flow [2023-08-30 14:22:16,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=178, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2023-08-30 14:22:16,307 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2023-08-30 14:22:16,307 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 178 flow [2023-08-30 14:22:16,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:16,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:16,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:22:16,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:22:16,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:22:16,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1453725371, now seen corresponding path program 1 times [2023-08-30 14:22:16,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:16,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450985542] [2023-08-30 14:22:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:16,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:16,360 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 14:22:16,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:16,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450985542] [2023-08-30 14:22:16,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450985542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:16,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:16,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:22:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302915435] [2023-08-30 14:22:16,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:16,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:22:16,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:22:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:22:16,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 571 [2023-08-30 14:22:16,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:16,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:16,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 571 [2023-08-30 14:22:16,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:18,115 INFO L130 PetriNetUnfolder]: 17851/28032 cut-off events. [2023-08-30 14:22:18,115 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-30 14:22:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55203 conditions, 28032 events. 17851/28032 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 214133 event pairs, 1746 based on Foata normal form. 0/19961 useless extension candidates. Maximal degree in co-relation 55198. Up to 24164 conditions per place. [2023-08-30 14:22:18,256 INFO L137 encePairwiseOnDemand]: 566/571 looper letters, 102 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 14:22:18,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 460 flow [2023-08-30 14:22:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:22:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:22:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2023-08-30 14:22:18,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002918855808524 [2023-08-30 14:22:18,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2023-08-30 14:22:18,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2023-08-30 14:22:18,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:18,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2023-08-30 14:22:18,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:18,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 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 14:22:18,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 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 14:22:18,267 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 178 flow. Second operand 3 states and 857 transitions. [2023-08-30 14:22:18,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 460 flow [2023-08-30 14:22:18,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 116 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:22:18,271 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 194 flow [2023-08-30 14:22:18,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2023-08-30 14:22:18,272 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-08-30 14:22:18,272 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 194 flow [2023-08-30 14:22:18,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:18,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:18,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:22:18,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:22:18,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:22:18,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:18,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1453725288, now seen corresponding path program 1 times [2023-08-30 14:22:18,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:18,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598832758] [2023-08-30 14:22:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:18,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:18,327 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 14:22:18,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:18,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598832758] [2023-08-30 14:22:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598832758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:18,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:18,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:22:18,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532058957] [2023-08-30 14:22:18,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:18,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:22:18,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:18,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:22:18,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:22:18,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 571 [2023-08-30 14:22:18,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:18,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:18,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 571 [2023-08-30 14:22:18,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:19,847 INFO L130 PetriNetUnfolder]: 18115/28273 cut-off events. [2023-08-30 14:22:19,848 INFO L131 PetriNetUnfolder]: For 2612/2612 co-relation queries the response was YES. [2023-08-30 14:22:19,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57334 conditions, 28273 events. 18115/28273 cut-off events. For 2612/2612 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 205352 event pairs, 8316 based on Foata normal form. 19/20847 useless extension candidates. Maximal degree in co-relation 57327. Up to 26994 conditions per place. [2023-08-30 14:22:19,982 INFO L137 encePairwiseOnDemand]: 568/571 looper letters, 86 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 14:22:19,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 99 transitions, 412 flow [2023-08-30 14:22:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:22:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:22:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 842 transitions. [2023-08-30 14:22:19,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4915353181552831 [2023-08-30 14:22:19,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 842 transitions. [2023-08-30 14:22:19,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 842 transitions. [2023-08-30 14:22:19,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:19,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 842 transitions. [2023-08-30 14:22:19,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:19,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 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 14:22:19,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 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 14:22:19,999 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 194 flow. Second operand 3 states and 842 transitions. [2023-08-30 14:22:19,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 99 transitions, 412 flow [2023-08-30 14:22:20,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 99 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:22:20,006 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 202 flow [2023-08-30 14:22:20,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2023-08-30 14:22:20,008 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-08-30 14:22:20,008 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 202 flow [2023-08-30 14:22:20,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:20,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:20,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:22:20,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:22:20,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:22:20,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:20,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2114242417, now seen corresponding path program 1 times [2023-08-30 14:22:20,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:20,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863467205] [2023-08-30 14:22:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:20,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:20,213 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 14:22:20,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:20,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863467205] [2023-08-30 14:22:20,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863467205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:20,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:20,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:22:20,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989170320] [2023-08-30 14:22:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:20,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:22:20,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:20,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:22:20,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:22:20,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 571 [2023-08-30 14:22:20,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:20,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:20,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 571 [2023-08-30 14:22:20,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:21,950 INFO L130 PetriNetUnfolder]: 19649/31086 cut-off events. [2023-08-30 14:22:21,950 INFO L131 PetriNetUnfolder]: For 2088/2088 co-relation queries the response was YES. [2023-08-30 14:22:22,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63182 conditions, 31086 events. 19649/31086 cut-off events. For 2088/2088 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 232236 event pairs, 7040 based on Foata normal form. 0/23448 useless extension candidates. Maximal degree in co-relation 63174. Up to 23124 conditions per place. [2023-08-30 14:22:22,135 INFO L137 encePairwiseOnDemand]: 556/571 looper letters, 152 selfloop transitions, 12 changer transitions 0/175 dead transitions. [2023-08-30 14:22:22,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 175 transitions, 760 flow [2023-08-30 14:22:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:22:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:22:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1143 transitions. [2023-08-30 14:22:22,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004378283712785 [2023-08-30 14:22:22,139 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1143 transitions. [2023-08-30 14:22:22,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1143 transitions. [2023-08-30 14:22:22,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:22,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1143 transitions. [2023-08-30 14:22:22,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,148 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 202 flow. Second operand 4 states and 1143 transitions. [2023-08-30 14:22:22,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 175 transitions, 760 flow [2023-08-30 14:22:22,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 175 transitions, 757 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:22:22,152 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 308 flow [2023-08-30 14:22:22,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2023-08-30 14:22:22,154 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2023-08-30 14:22:22,154 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 308 flow [2023-08-30 14:22:22,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:22,155 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:22:22,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:22:22,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:22:22,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash -694402962, now seen corresponding path program 1 times [2023-08-30 14:22:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:22,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671803465] [2023-08-30 14:22:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:22,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:22,198 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 14:22:22,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:22,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671803465] [2023-08-30 14:22:22,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671803465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:22,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:22,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:22:22,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301694597] [2023-08-30 14:22:22,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:22,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:22:22,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:22,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:22:22,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:22:22,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 571 [2023-08-30 14:22:22,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:22,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:22,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 571 [2023-08-30 14:22:22,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:23,853 INFO L130 PetriNetUnfolder]: 18982/30084 cut-off events. [2023-08-30 14:22:23,853 INFO L131 PetriNetUnfolder]: For 8093/8093 co-relation queries the response was YES. [2023-08-30 14:22:23,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69252 conditions, 30084 events. 18982/30084 cut-off events. For 8093/8093 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 223585 event pairs, 17111 based on Foata normal form. 368/25076 useless extension candidates. Maximal degree in co-relation 69242. Up to 28948 conditions per place. [2023-08-30 14:22:24,021 INFO L137 encePairwiseOnDemand]: 569/571 looper letters, 79 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-30 14:22:24,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 464 flow [2023-08-30 14:22:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:22:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:22:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 821 transitions. [2023-08-30 14:22:24,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4792761237594863 [2023-08-30 14:22:24,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 821 transitions. [2023-08-30 14:22:24,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 821 transitions. [2023-08-30 14:22:24,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:24,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 821 transitions. [2023-08-30 14:22:24,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:24,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 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 14:22:24,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 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 14:22:24,030 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 308 flow. Second operand 3 states and 821 transitions. [2023-08-30 14:22:24,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 464 flow [2023-08-30 14:22:24,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:22:24,041 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 306 flow [2023-08-30 14:22:24,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2023-08-30 14:22:24,044 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2023-08-30 14:22:24,044 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 306 flow [2023-08-30 14:22:24,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:24,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:24,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:22:24,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:22:24,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:22:24,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash -41748507, now seen corresponding path program 1 times [2023-08-30 14:22:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:24,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7411498] [2023-08-30 14:22:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:24,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:24,115 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 14:22:24,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7411498] [2023-08-30 14:22:24,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7411498] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:22:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469572784] [2023-08-30 14:22:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:24,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:22:24,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:22:24,119 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 14:22:24,125 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 14:22:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:24,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:22:24,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:22:25,086 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 14:22:25,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:22:25,105 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 14:22:25,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469572784] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:22:25,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:22:25,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 14:22:25,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684205765] [2023-08-30 14:22:25,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:22:25,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:22:25,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:25,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:22:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:22:25,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 571 [2023-08-30 14:22:25,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:25,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:25,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 571 [2023-08-30 14:22:25,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:25,421 INFO L130 PetriNetUnfolder]: 1765/3341 cut-off events. [2023-08-30 14:22:25,421 INFO L131 PetriNetUnfolder]: For 1986/1986 co-relation queries the response was YES. [2023-08-30 14:22:25,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9249 conditions, 3341 events. 1765/3341 cut-off events. For 1986/1986 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22739 event pairs, 31 based on Foata normal form. 387/3386 useless extension candidates. Maximal degree in co-relation 9238. Up to 2120 conditions per place. [2023-08-30 14:22:25,441 INFO L137 encePairwiseOnDemand]: 568/571 looper letters, 102 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-08-30 14:22:25,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 576 flow [2023-08-30 14:22:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:22:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:22:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1348 transitions. [2023-08-30 14:22:25,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47215411558669 [2023-08-30 14:22:25,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1348 transitions. [2023-08-30 14:22:25,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1348 transitions. [2023-08-30 14:22:25,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:25,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1348 transitions. [2023-08-30 14:22:25,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:25,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 571.0) internal successors, (3426), 6 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:25,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 571.0) internal successors, (3426), 6 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:25,454 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 306 flow. Second operand 5 states and 1348 transitions. [2023-08-30 14:22:25,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 576 flow [2023-08-30 14:22:25,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 573 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:22:25,459 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 201 flow [2023-08-30 14:22:25,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2023-08-30 14:22:25,461 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -16 predicate places. [2023-08-30 14:22:25,461 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 201 flow [2023-08-30 14:22:25,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:25,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:25,462 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:22:25,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:22:25,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 14:22:25,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:22:25,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1601189640, now seen corresponding path program 1 times [2023-08-30 14:22:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:25,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338242414] [2023-08-30 14:22:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:25,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:22:25,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:22:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:22:25,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:22:25,787 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:22:25,787 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-30 14:22:25,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-30 14:22:25,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-30 14:22:25,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-30 14:22:25,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-30 14:22:25,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-30 14:22:25,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-30 14:22:25,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-30 14:22:25,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-30 14:22:25,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-30 14:22:25,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-30 14:22:25,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-30 14:22:25,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-30 14:22:25,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-30 14:22:25,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-08-30 14:22:25,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-30 14:22:25,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-30 14:22:25,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-30 14:22:25,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-30 14:22:25,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-30 14:22:25,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-30 14:22:25,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-30 14:22:25,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-30 14:22:25,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-30 14:22:25,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-08-30 14:22:25,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:22:25,794 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:22:25,795 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:22:25,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:22:25,834 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:22:25,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 363 transitions, 756 flow [2023-08-30 14:22:25,941 INFO L130 PetriNetUnfolder]: 106/705 cut-off events. [2023-08-30 14:22:25,941 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:22:25,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 705 events. 106/705 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3070 event pairs, 1 based on Foata normal form. 0/543 useless extension candidates. Maximal degree in co-relation 495. Up to 16 conditions per place. [2023-08-30 14:22:25,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 363 transitions, 756 flow [2023-08-30 14:22:25,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 361 transitions, 752 flow [2023-08-30 14:22:25,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:22:25,959 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 361 transitions, 752 flow [2023-08-30 14:22:25,960 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 361 transitions, 752 flow [2023-08-30 14:22:25,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 361 transitions, 752 flow [2023-08-30 14:22:26,045 INFO L130 PetriNetUnfolder]: 105/703 cut-off events. [2023-08-30 14:22:26,046 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:22:26,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 703 events. 105/703 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3084 event pairs, 1 based on Foata normal form. 0/542 useless extension candidates. Maximal degree in co-relation 493. Up to 16 conditions per place. [2023-08-30 14:22:26,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 62208 [2023-08-30 14:22:33,596 INFO L134 LiptonReduction]: Checked pairs total: 152849 [2023-08-30 14:22:33,596 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-08-30 14:22:33,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:22:33,598 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;@5c0ec6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:22:33,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 14:22:33,599 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 14:22:33,599 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:22:33,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:33,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 14:22:33,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:22:33,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:33,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2275, now seen corresponding path program 1 times [2023-08-30 14:22:33,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:33,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602324421] [2023-08-30 14:22:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:33,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:22:33,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:33,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602324421] [2023-08-30 14:22:33,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602324421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:33,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:33,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 14:22:33,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728915093] [2023-08-30 14:22:33,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:33,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 14:22:33,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 14:22:33,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 14:22:33,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 684 [2023-08-30 14:22:33,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 148 transitions, 326 flow. Second operand has 2 states, 2 states have (on average 307.5) internal successors, (615), 2 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:33,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:33,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 684 [2023-08-30 14:22:33,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:23:16,146 INFO L130 PetriNetUnfolder]: 547470/756695 cut-off events. [2023-08-30 14:23:16,146 INFO L131 PetriNetUnfolder]: For 5097/5097 co-relation queries the response was YES. [2023-08-30 14:23:17,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480913 conditions, 756695 events. 547470/756695 cut-off events. For 5097/5097 co-relation queries the response was YES. Maximal size of possible extension queue 19563. Compared 6194474 event pairs, 527315 based on Foata normal form. 94989/643203 useless extension candidates. Maximal degree in co-relation 235214. Up to 721177 conditions per place. [2023-08-30 14:23:19,952 INFO L137 encePairwiseOnDemand]: 639/684 looper letters, 89 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2023-08-30 14:23:19,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 103 transitions, 414 flow [2023-08-30 14:23:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 14:23:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 14:23:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 748 transitions. [2023-08-30 14:23:19,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467836257309941 [2023-08-30 14:23:19,955 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 748 transitions. [2023-08-30 14:23:19,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 748 transitions. [2023-08-30 14:23:19,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:23:19,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 748 transitions. [2023-08-30 14:23:19,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 374.0) internal successors, (748), 2 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:19,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 684.0) internal successors, (2052), 3 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:19,961 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 684.0) internal successors, (2052), 3 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:19,961 INFO L175 Difference]: Start difference. First operand has 107 places, 148 transitions, 326 flow. Second operand 2 states and 748 transitions. [2023-08-30 14:23:19,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 103 transitions, 414 flow [2023-08-30 14:23:19,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 414 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:23:19,969 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 236 flow [2023-08-30 14:23:19,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=236, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2023-08-30 14:23:19,970 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -3 predicate places. [2023-08-30 14:23:19,970 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 236 flow [2023-08-30 14:23:19,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 307.5) internal successors, (615), 2 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:19,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:23:19,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:23:19,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:23:19,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:23:19,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:23:19,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2126278749, now seen corresponding path program 1 times [2023-08-30 14:23:19,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:23:19,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765591803] [2023-08-30 14:23:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:19,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:23:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:23:20,017 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 14:23:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:23:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765591803] [2023-08-30 14:23:20,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765591803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:23:20,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:23:20,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:23:20,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074330341] [2023-08-30 14:23:20,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:23:20,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:23:20,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:23:20,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:23:20,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:23:20,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 684 [2023-08-30 14:23:20,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:20,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:23:20,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 684 [2023-08-30 14:23:20,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:24:00,840 INFO L130 PetriNetUnfolder]: 517051/713512 cut-off events. [2023-08-30 14:24:00,840 INFO L131 PetriNetUnfolder]: For 3735/3735 co-relation queries the response was YES. [2023-08-30 14:24:02,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410353 conditions, 713512 events. 517051/713512 cut-off events. For 3735/3735 co-relation queries the response was YES. Maximal size of possible extension queue 18398. Compared 6083511 event pairs, 53597 based on Foata normal form. 0/518733 useless extension candidates. Maximal degree in co-relation 1410347. Up to 618559 conditions per place. [2023-08-30 14:24:04,477 INFO L137 encePairwiseOnDemand]: 679/684 looper letters, 140 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2023-08-30 14:24:04,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 157 transitions, 630 flow [2023-08-30 14:24:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:24:04,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:24:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2023-08-30 14:24:04,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121832358674464 [2023-08-30 14:24:04,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2023-08-30 14:24:04,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2023-08-30 14:24:04,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:24:04,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2023-08-30 14:24:04,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:04,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 684.0) internal successors, (2736), 4 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:04,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 684.0) internal successors, (2736), 4 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:04,487 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 236 flow. Second operand 3 states and 1051 transitions. [2023-08-30 14:24:04,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 157 transitions, 630 flow [2023-08-30 14:24:04,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 157 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:24:04,492 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 252 flow [2023-08-30 14:24:04,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2023-08-30 14:24:04,492 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-08-30 14:24:04,492 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 252 flow [2023-08-30 14:24:04,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:04,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:24:04,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:24:04,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:24:04,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:24:04,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:24:04,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2126278856, now seen corresponding path program 1 times [2023-08-30 14:24:04,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:24:04,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260623163] [2023-08-30 14:24:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:24:04,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:24:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:24:04,532 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 14:24:04,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:24:04,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260623163] [2023-08-30 14:24:04,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260623163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:24:04,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:24:04,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:24:04,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129792672] [2023-08-30 14:24:04,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:24:04,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:24:04,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:24:04,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:24:04,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:24:04,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 684 [2023-08-30 14:24:04,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:04,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:24:04,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 684 [2023-08-30 14:24:04,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:24:44,446 INFO L130 PetriNetUnfolder]: 528046/728816 cut-off events. [2023-08-30 14:24:44,446 INFO L131 PetriNetUnfolder]: For 54851/54851 co-relation queries the response was YES. [2023-08-30 14:24:46,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461867 conditions, 728816 events. 528046/728816 cut-off events. For 54851/54851 co-relation queries the response was YES. Maximal size of possible extension queue 18322. Compared 5899122 event pairs, 332471 based on Foata normal form. 20/547511 useless extension candidates. Maximal degree in co-relation 1461859. Up to 693738 conditions per place. [2023-08-30 14:24:48,745 INFO L137 encePairwiseOnDemand]: 681/684 looper letters, 107 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-30 14:24:48,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 123 transitions, 514 flow [2023-08-30 14:24:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:24:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:24:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1019 transitions. [2023-08-30 14:24:48,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496588693957115 [2023-08-30 14:24:48,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1019 transitions. [2023-08-30 14:24:48,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1019 transitions. [2023-08-30 14:24:48,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:24:48,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1019 transitions. [2023-08-30 14:24:48,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:48,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 684.0) internal successors, (2736), 4 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:48,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 684.0) internal successors, (2736), 4 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:48,754 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 252 flow. Second operand 3 states and 1019 transitions. [2023-08-30 14:24:48,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 123 transitions, 514 flow [2023-08-30 14:24:48,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 123 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:24:48,799 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 260 flow [2023-08-30 14:24:48,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2023-08-30 14:24:48,799 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 1 predicate places. [2023-08-30 14:24:48,799 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 260 flow [2023-08-30 14:24:48,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:48,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:24:48,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:24:48,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:24:48,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:24:48,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:24:48,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1431925892, now seen corresponding path program 1 times [2023-08-30 14:24:48,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:24:48,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444698867] [2023-08-30 14:24:48,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:24:48,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:24:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:24:48,925 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 14:24:48,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:24:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444698867] [2023-08-30 14:24:48,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444698867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:24:48,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:24:48,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:24:48,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226838642] [2023-08-30 14:24:48,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:24:48,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:24:48,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:24:48,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:24:48,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:24:49,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 684 [2023-08-30 14:24:49,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:49,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:24:49,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 684 [2023-08-30 14:24:49,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:25:40,978 INFO L130 PetriNetUnfolder]: 662639/931509 cut-off events. [2023-08-30 14:25:40,978 INFO L131 PetriNetUnfolder]: For 52175/52175 co-relation queries the response was YES. [2023-08-30 14:25:43,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881623 conditions, 931509 events. 662639/931509 cut-off events. For 52175/52175 co-relation queries the response was YES. Maximal size of possible extension queue 26121. Compared 8108645 event pairs, 194575 based on Foata normal form. 2859/729471 useless extension candidates. Maximal degree in co-relation 1881614. Up to 638937 conditions per place. [2023-08-30 14:25:46,342 INFO L137 encePairwiseOnDemand]: 658/684 looper letters, 199 selfloop transitions, 18 changer transitions 0/231 dead transitions. [2023-08-30 14:25:46,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 231 transitions, 1010 flow [2023-08-30 14:25:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:25:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:25:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1404 transitions. [2023-08-30 14:25:46,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2023-08-30 14:25:46,346 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1404 transitions. [2023-08-30 14:25:46,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1404 transitions. [2023-08-30 14:25:46,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:25:46,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1404 transitions. [2023-08-30 14:25:46,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:46,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 684.0) internal successors, (3420), 5 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:46,353 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 684.0) internal successors, (3420), 5 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:46,353 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 260 flow. Second operand 4 states and 1404 transitions. [2023-08-30 14:25:46,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 231 transitions, 1010 flow [2023-08-30 14:25:46,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 231 transitions, 1007 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:25:46,426 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 428 flow [2023-08-30 14:25:46,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=113, PETRI_TRANSITIONS=121} [2023-08-30 14:25:46,427 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 6 predicate places. [2023-08-30 14:25:46,427 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 428 flow [2023-08-30 14:25:46,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:46,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:25:46,428 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:25:46,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:25:46,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:25:46,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:25:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash 331051830, now seen corresponding path program 1 times [2023-08-30 14:25:46,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:25:46,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410795042] [2023-08-30 14:25:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:25:46,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:25:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:25:46,465 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 14:25:46,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:25:46,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410795042] [2023-08-30 14:25:46,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410795042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:25:46,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:25:46,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:25:46,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501356813] [2023-08-30 14:25:46,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:25:46,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:25:46,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:25:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:25:46,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:25:46,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 684 [2023-08-30 14:25:46,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 121 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:46,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:25:46,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 684 [2023-08-30 14:25:46,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:26:51,212 INFO L130 PetriNetUnfolder]: 640573/904995 cut-off events. [2023-08-30 14:26:51,212 INFO L131 PetriNetUnfolder]: For 297427/297510 co-relation queries the response was YES. [2023-08-30 14:26:53,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155752 conditions, 904995 events. 640573/904995 cut-off events. For 297427/297510 co-relation queries the response was YES. Maximal size of possible extension queue 25446. Compared 7910252 event pairs, 564963 based on Foata normal form. 8929/776610 useless extension candidates. Maximal degree in co-relation 2155741. Up to 868044 conditions per place. [2023-08-30 14:26:57,470 INFO L137 encePairwiseOnDemand]: 682/684 looper letters, 105 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2023-08-30 14:26:57,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 120 transitions, 636 flow [2023-08-30 14:26:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:26:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:26:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2023-08-30 14:26:57,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48586744639376217 [2023-08-30 14:26:57,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2023-08-30 14:26:57,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2023-08-30 14:26:57,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:26:57,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2023-08-30 14:26:57,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:57,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 684.0) internal successors, (2736), 4 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:57,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 684.0) internal successors, (2736), 4 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:57,478 INFO L175 Difference]: Start difference. First operand has 113 places, 121 transitions, 428 flow. Second operand 3 states and 997 transitions. [2023-08-30 14:26:57,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 120 transitions, 636 flow [2023-08-30 14:26:57,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 120 transitions, 636 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:26:57,640 INFO L231 Difference]: Finished difference. Result has 114 places, 120 transitions, 426 flow [2023-08-30 14:26:57,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=114, PETRI_TRANSITIONS=120} [2023-08-30 14:26:57,640 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 7 predicate places. [2023-08-30 14:26:57,641 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 120 transitions, 426 flow [2023-08-30 14:26:57,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:57,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:26:57,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:26:57,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:26:57,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:26:57,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:26:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1702866676, now seen corresponding path program 1 times [2023-08-30 14:26:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:26:57,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398648227] [2023-08-30 14:26:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:26:57,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:26:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:26:57,686 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 14:26:57,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:26:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398648227] [2023-08-30 14:26:57,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398648227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:26:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167286634] [2023-08-30 14:26:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:26:57,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:26:57,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:26:57,701 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 14:26:57,705 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 14:26:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:26:57,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:26:57,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:26:58,248 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 14:26:58,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:26:58,262 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 14:26:58,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167286634] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:26:58,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:26:58,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 14:26:58,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159071956] [2023-08-30 14:26:58,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:26:58,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:26:58,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:26:58,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:26:58,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:26:58,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 684 [2023-08-30 14:26:58,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 120 transitions, 426 flow. Second operand has 6 states, 6 states have (on average 304.1666666666667) internal successors, (1825), 6 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:58,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:26:58,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 684 [2023-08-30 14:26:58,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:27:04,317 INFO L130 PetriNetUnfolder]: 63634/98528 cut-off events. [2023-08-30 14:27:04,317 INFO L131 PetriNetUnfolder]: For 71319/71379 co-relation queries the response was YES. [2023-08-30 14:27:04,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280291 conditions, 98528 events. 63634/98528 cut-off events. For 71319/71379 co-relation queries the response was YES. Maximal size of possible extension queue 4081. Compared 836234 event pairs, 1868 based on Foata normal form. 8995/98163 useless extension candidates. Maximal degree in co-relation 280279. Up to 63591 conditions per place. [2023-08-30 14:27:05,113 INFO L137 encePairwiseOnDemand]: 681/684 looper letters, 200 selfloop transitions, 4 changer transitions 0/215 dead transitions. [2023-08-30 14:27:05,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 215 transitions, 1183 flow [2023-08-30 14:27:05,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:27:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:27:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1987 transitions. [2023-08-30 14:27:05,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4841617933723197 [2023-08-30 14:27:05,117 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1987 transitions. [2023-08-30 14:27:05,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1987 transitions. [2023-08-30 14:27:05,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:27:05,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1987 transitions. [2023-08-30 14:27:05,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 331.1666666666667) internal successors, (1987), 6 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 684.0) internal successors, (4788), 7 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,126 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 684.0) internal successors, (4788), 7 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,126 INFO L175 Difference]: Start difference. First operand has 114 places, 120 transitions, 426 flow. Second operand 6 states and 1987 transitions. [2023-08-30 14:27:05,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 215 transitions, 1183 flow [2023-08-30 14:27:05,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 215 transitions, 1176 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 14:27:05,175 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 332 flow [2023-08-30 14:27:05,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2023-08-30 14:27:05,176 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -15 predicate places. [2023-08-30 14:27:05,176 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 332 flow [2023-08-30 14:27:05,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.1666666666667) internal successors, (1825), 6 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:27:05,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:27:05,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 14:27:05,381 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,SelfDestructingSolverStorable16 [2023-08-30 14:27:05,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:27:05,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:27:05,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1729622172, now seen corresponding path program 1 times [2023-08-30 14:27:05,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:27:05,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829634976] [2023-08-30 14:27:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:27:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:27:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:27:05,638 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 14:27:05,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:27:05,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829634976] [2023-08-30 14:27:05,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829634976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:27:05,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:27:05,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:27:05,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886949395] [2023-08-30 14:27:05,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:27:05,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:27:05,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:27:05,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:27:05,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:27:05,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 684 [2023-08-30 14:27:05,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 290.8333333333333) internal successors, (1745), 6 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:05,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:27:05,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 684 [2023-08-30 14:27:05,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:27:14,339 INFO L130 PetriNetUnfolder]: 82349/122337 cut-off events. [2023-08-30 14:27:14,339 INFO L131 PetriNetUnfolder]: For 127751/128155 co-relation queries the response was YES. [2023-08-30 14:27:14,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343246 conditions, 122337 events. 82349/122337 cut-off events. For 127751/128155 co-relation queries the response was YES. Maximal size of possible extension queue 4925. Compared 1007031 event pairs, 13810 based on Foata normal form. 960/112933 useless extension candidates. Maximal degree in co-relation 343234. Up to 61015 conditions per place. [2023-08-30 14:27:15,362 INFO L137 encePairwiseOnDemand]: 659/684 looper letters, 278 selfloop transitions, 52 changer transitions 0/341 dead transitions. [2023-08-30 14:27:15,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 341 transitions, 1830 flow [2023-08-30 14:27:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:27:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:27:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2932 transitions. [2023-08-30 14:27:15,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4762833008447043 [2023-08-30 14:27:15,367 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2932 transitions. [2023-08-30 14:27:15,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2932 transitions. [2023-08-30 14:27:15,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:27:15,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2932 transitions. [2023-08-30 14:27:15,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 325.77777777777777) internal successors, (2932), 9 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:15,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 684.0) internal successors, (6840), 10 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:15,376 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 684.0) internal successors, (6840), 10 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:15,377 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 332 flow. Second operand 9 states and 2932 transitions. [2023-08-30 14:27:15,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 341 transitions, 1830 flow [2023-08-30 14:27:15,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 341 transitions, 1785 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-30 14:27:15,439 INFO L231 Difference]: Finished difference. Result has 104 places, 125 transitions, 781 flow [2023-08-30 14:27:15,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=781, PETRI_PLACES=104, PETRI_TRANSITIONS=125} [2023-08-30 14:27:15,440 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -3 predicate places. [2023-08-30 14:27:15,440 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 125 transitions, 781 flow [2023-08-30 14:27:15,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.8333333333333) internal successors, (1745), 6 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:15,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:27:15,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:27:15,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 14:27:15,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:27:15,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:27:15,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1729622171, now seen corresponding path program 1 times [2023-08-30 14:27:15,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:27:15,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616354506] [2023-08-30 14:27:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:27:15,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:27:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:27:15,515 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 14:27:15,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:27:15,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616354506] [2023-08-30 14:27:15,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616354506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:27:15,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:27:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:27:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408543059] [2023-08-30 14:27:15,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:27:15,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:27:15,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:27:15,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:27:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:27:15,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 684 [2023-08-30 14:27:15,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 125 transitions, 781 flow. Second operand has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:15,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:27:15,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 684 [2023-08-30 14:27:15,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:27:27,901 INFO L130 PetriNetUnfolder]: 104668/160587 cut-off events. [2023-08-30 14:27:27,902 INFO L131 PetriNetUnfolder]: For 336680/338162 co-relation queries the response was YES. [2023-08-30 14:27:28,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535556 conditions, 160587 events. 104668/160587 cut-off events. For 336680/338162 co-relation queries the response was YES. Maximal size of possible extension queue 6371. Compared 1432379 event pairs, 29407 based on Foata normal form. 4461/159000 useless extension candidates. Maximal degree in co-relation 535539. Up to 74731 conditions per place. [2023-08-30 14:27:29,198 INFO L137 encePairwiseOnDemand]: 661/684 looper letters, 225 selfloop transitions, 79 changer transitions 0/315 dead transitions. [2023-08-30 14:27:29,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 315 transitions, 2497 flow [2023-08-30 14:27:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:27:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:27:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1651 transitions. [2023-08-30 14:27:29,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827485380116959 [2023-08-30 14:27:29,208 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1651 transitions. [2023-08-30 14:27:29,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1651 transitions. [2023-08-30 14:27:29,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:27:29,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1651 transitions. [2023-08-30 14:27:29,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 330.2) internal successors, (1651), 5 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:29,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:29,214 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 684.0) internal successors, (4104), 6 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:29,215 INFO L175 Difference]: Start difference. First operand has 104 places, 125 transitions, 781 flow. Second operand 5 states and 1651 transitions. [2023-08-30 14:27:29,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 315 transitions, 2497 flow [2023-08-30 14:27:30,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 315 transitions, 2436 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 14:27:30,629 INFO L231 Difference]: Finished difference. Result has 110 places, 190 transitions, 1702 flow [2023-08-30 14:27:30,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=684, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1702, PETRI_PLACES=110, PETRI_TRANSITIONS=190} [2023-08-30 14:27:30,630 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 3 predicate places. [2023-08-30 14:27:30,630 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 190 transitions, 1702 flow [2023-08-30 14:27:30,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:30,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:27:30,631 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:27:30,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 14:27:30,631 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:27:30,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:27:30,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1391238140, now seen corresponding path program 1 times [2023-08-30 14:27:30,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:27:30,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368009196] [2023-08-30 14:27:30,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:27:30,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:27:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:27:30,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:27:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:27:30,659 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:27:30,659 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:27:30,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-30 14:27:30,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-30 14:27:30,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-30 14:27:30,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-30 14:27:30,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-30 14:27:30,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-30 14:27:30,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-30 14:27:30,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-30 14:27:30,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-30 14:27:30,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-30 14:27:30,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-30 14:27:30,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-30 14:27:30,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-30 14:27:30,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-30 14:27:30,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-30 14:27:30,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-30 14:27:30,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-30 14:27:30,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-30 14:27:30,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-30 14:27:30,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-30 14:27:30,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-30 14:27:30,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-30 14:27:30,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-30 14:27:30,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-30 14:27:30,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-30 14:27:30,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-30 14:27:30,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-30 14:27:30,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-30 14:27:30,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-30 14:27:30,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 14:27:30,664 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:27:30,665 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:27:30,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:27:30,838 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:27:30,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 429 transitions, 902 flow [2023-08-30 14:27:30,980 INFO L130 PetriNetUnfolder]: 152/1003 cut-off events. [2023-08-30 14:27:30,981 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:27:31,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 1003 events. 152/1003 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4658 event pairs, 6 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 725. Up to 32 conditions per place. [2023-08-30 14:27:31,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 429 transitions, 902 flow [2023-08-30 14:27:31,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 427 transitions, 898 flow [2023-08-30 14:27:31,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:27:31,014 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 369 places, 427 transitions, 898 flow [2023-08-30 14:27:31,016 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 369 places, 427 transitions, 898 flow [2023-08-30 14:27:31,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 427 transitions, 898 flow [2023-08-30 14:27:31,152 INFO L130 PetriNetUnfolder]: 151/1001 cut-off events. [2023-08-30 14:27:31,153 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:27:31,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 1001 events. 151/1001 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4671 event pairs, 6 based on Foata normal form. 0/772 useless extension candidates. Maximal degree in co-relation 723. Up to 32 conditions per place. [2023-08-30 14:27:31,221 INFO L119 LiptonReduction]: Number of co-enabled transitions 100096 [2023-08-30 14:27:39,270 INFO L134 LiptonReduction]: Checked pairs total: 302469 [2023-08-30 14:27:39,270 INFO L136 LiptonReduction]: Total number of compositions: 381 [2023-08-30 14:27:39,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:27:39,271 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;@5c0ec6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:27:39,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-30 14:27:39,272 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 14:27:39,272 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:27:39,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:27:39,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 14:27:39,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 14:27:39,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:27:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash 3145, now seen corresponding path program 1 times [2023-08-30 14:27:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:27:39,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862322554] [2023-08-30 14:27:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:27:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:27:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:27:39,276 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 14:27:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:27:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862322554] [2023-08-30 14:27:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862322554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:27:39,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:27:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 14:27:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010431122] [2023-08-30 14:27:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:27:39,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 14:27:39,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:27:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 14:27:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 14:27:39,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 810 [2023-08-30 14:27:39,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 181 transitions, 406 flow. Second operand has 2 states, 2 states have (on average 359.5) internal successors, (719), 2 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:39,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:27:39,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 810 [2023-08-30 14:27:39,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand