./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_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_22-deref_read_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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --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 14:11:15,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:11:15,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:11:15,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:11:15,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:11:15,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:11:15,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:11:15,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:11:15,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:11:15,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:11:15,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:11:15,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:11:15,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:11:15,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:11:15,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:11:15,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:11:15,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:11:15,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:11:15,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:11:15,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:11:15,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:11:15,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:11:15,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:11:15,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:11:15,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:11:15,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:11:15,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:11:15,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:11:15,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:11:15,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:11:15,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:11:15,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:11:15,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:11:15,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:11:15,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:11:15,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:11:15,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:11:15,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:11:15,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:11:15,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:11:15,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:11:15,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:11:15,330 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:11:15,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:11:15,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:11:15,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:11:15,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:11:15,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:11:15,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:11:15,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:11:15,336 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:11:15,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:11:15,337 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:11:15,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:11:15,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:11:15,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:11:15,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:11:15,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:11:15,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:11:15,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:11:15,338 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:11:15,338 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:11:15,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:11:15,338 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:11:15,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:11:15,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:11:15,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:11:15,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:11:15,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:11:15,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:11:15,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:11:15,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:11:15,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:11:15,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:11:15,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:11:15,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:11:15,340 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:11:15,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:11:15,341 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:11:15,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:11:15,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:11:15,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:11:15,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:11:15,597 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:11:15,597 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:11:15,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-30 14:11:16,515 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:11:16,760 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:11:16,760 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-30 14:11:16,774 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befa86f14/8b007387cfc3491d872bbe9bd3a2b68b/FLAG6003662a3 [2023-08-30 14:11:16,788 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/befa86f14/8b007387cfc3491d872bbe9bd3a2b68b [2023-08-30 14:11:16,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:11:16,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:11:16,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:11:16,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:11:16,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:11:16,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:11:16" (1/1) ... [2023-08-30 14:11:16,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644d0978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:16, skipping insertion in model container [2023-08-30 14:11:16,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:11:16" (1/1) ... [2023-08-30 14:11:16,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:11:16,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:11:17,068 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_22-deref_read_racefree.i[30176,30189] [2023-08-30 14:11:17,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:11:17,094 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:11:17,116 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_22-deref_read_racefree.i[30176,30189] [2023-08-30 14:11:17,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:11:17,154 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:11:17,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17 WrapperNode [2023-08-30 14:11:17,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:11:17,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:11:17,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:11:17,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:11:17,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,186 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-08-30 14:11:17,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:11:17,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:11:17,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:11:17,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:11:17,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,209 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:11:17,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:11:17,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:11:17,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:11:17,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (1/1) ... [2023-08-30 14:11:17,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:11:17,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:11:17,236 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 14:11:17,242 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 14:11:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:11:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:11:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:11:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:11:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:11:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:11:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:11:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:11:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:11:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:11:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:11:17,260 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 14:11:17,352 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:11:17,353 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:11:17,517 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:11:17,521 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:11:17,530 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-30 14:11:17,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:11:17 BoogieIcfgContainer [2023-08-30 14:11:17,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:11:17,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:11:17,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:11:17,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:11:17,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:11:16" (1/3) ... [2023-08-30 14:11:17,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b69581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:11:17, skipping insertion in model container [2023-08-30 14:11:17,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:11:17" (2/3) ... [2023-08-30 14:11:17,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b69581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:11:17, skipping insertion in model container [2023-08-30 14:11:17,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:11:17" (3/3) ... [2023-08-30 14:11:17,536 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2023-08-30 14:11:17,541 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:11:17,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:11:17,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 14:11:17,547 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:11:17,617 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 14:11:17,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 111 transitions, 227 flow [2023-08-30 14:11:17,705 INFO L130 PetriNetUnfolder]: 14/141 cut-off events. [2023-08-30 14:11:17,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:17,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 141 events. 14/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2023-08-30 14:11:17,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 111 transitions, 227 flow [2023-08-30 14:11:17,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 111 transitions, 227 flow [2023-08-30 14:11:17,716 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:11:17,725 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 111 transitions, 227 flow [2023-08-30 14:11:17,728 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 111 transitions, 227 flow [2023-08-30 14:11:17,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 111 transitions, 227 flow [2023-08-30 14:11:17,763 INFO L130 PetriNetUnfolder]: 14/141 cut-off events. [2023-08-30 14:11:17,763 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:17,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 141 events. 14/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2023-08-30 14:11:17,767 INFO L119 LiptonReduction]: Number of co-enabled transitions 3200 [2023-08-30 14:11:19,998 INFO L134 LiptonReduction]: Checked pairs total: 6065 [2023-08-30 14:11:19,998 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-30 14:11:20,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:11:20,010 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;@3d87f725, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:11:20,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 14:11:20,013 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-30 14:11:20,013 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:20,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:20,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:11:20,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 14:11:20,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash 13430229, now seen corresponding path program 1 times [2023-08-30 14:11:20,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:20,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131027204] [2023-08-30 14:11:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:20,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:20,183 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 14:11:20,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:20,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131027204] [2023-08-30 14:11:20,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131027204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:20,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:20,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935528602] [2023-08-30 14:11:20,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:20,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:20,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:20,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:20,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:20,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-08-30 14:11:20,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 35 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:20,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:20,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-08-30 14:11:20,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:20,289 INFO L130 PetriNetUnfolder]: 91/216 cut-off events. [2023-08-30 14:11:20,290 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:20,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 216 events. 91/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 768 event pairs, 72 based on Foata normal form. 16/186 useless extension candidates. Maximal degree in co-relation 413. Up to 190 conditions per place. [2023-08-30 14:11:20,291 INFO L137 encePairwiseOnDemand]: 199/212 looper letters, 34 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-30 14:11:20,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 155 flow [2023-08-30 14:11:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:20,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2023-08-30 14:11:20,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314465408805031 [2023-08-30 14:11:20,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2023-08-30 14:11:20,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2023-08-30 14:11:20,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:20,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2023-08-30 14:11:20,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:20,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:20,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:20,309 INFO L175 Difference]: Start difference. First operand has 30 places, 35 transitions, 75 flow. Second operand 3 states and 338 transitions. [2023-08-30 14:11:20,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 155 flow [2023-08-30 14:11:20,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 155 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:11:20,312 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 63 flow [2023-08-30 14:11:20,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-30 14:11:20,315 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-30 14:11:20,315 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 63 flow [2023-08-30 14:11:20,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:20,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:20,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:11:20,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:11:20,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 14:11:20,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash 21584508, now seen corresponding path program 1 times [2023-08-30 14:11:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:20,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822243206] [2023-08-30 14:11:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:20,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:20,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:11:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:20,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:11:20,371 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:11:20,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-30 14:11:20,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-30 14:11:20,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-30 14:11:20,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-30 14:11:20,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-08-30 14:11:20,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-30 14:11:20,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-30 14:11:20,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-30 14:11:20,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-30 14:11:20,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-30 14:11:20,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-30 14:11:20,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:11:20,379 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:11:20,382 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:11:20,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:11:20,401 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 14:11:20,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 152 transitions, 316 flow [2023-08-30 14:11:20,426 INFO L130 PetriNetUnfolder]: 24/221 cut-off events. [2023-08-30 14:11:20,427 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:11:20,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 221 events. 24/221 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 649 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 142. Up to 6 conditions per place. [2023-08-30 14:11:20,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 152 transitions, 316 flow [2023-08-30 14:11:20,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 152 transitions, 316 flow [2023-08-30 14:11:20,431 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:11:20,431 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 152 transitions, 316 flow [2023-08-30 14:11:20,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 152 transitions, 316 flow [2023-08-30 14:11:20,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 152 transitions, 316 flow [2023-08-30 14:11:20,447 INFO L130 PetriNetUnfolder]: 24/221 cut-off events. [2023-08-30 14:11:20,447 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:11:20,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 221 events. 24/221 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 649 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 142. Up to 6 conditions per place. [2023-08-30 14:11:20,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 9680 [2023-08-30 14:11:22,745 INFO L134 LiptonReduction]: Checked pairs total: 21045 [2023-08-30 14:11:22,746 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-30 14:11:22,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:11:22,748 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;@3d87f725, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:11:22,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-30 14:11:22,749 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2023-08-30 14:11:22,750 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:22,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:22,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:11:22,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:11:22,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:22,750 INFO L85 PathProgramCache]: Analyzing trace with hash 728206496, now seen corresponding path program 1 times [2023-08-30 14:11:22,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:22,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119489047] [2023-08-30 14:11:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:22,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:22,783 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 14:11:22,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:22,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119489047] [2023-08-30 14:11:22,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119489047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:22,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:22,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:22,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988841237] [2023-08-30 14:11:22,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:22,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:22,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:22,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:22,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:22,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 286 [2023-08-30 14:11:22,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:22,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:22,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 286 [2023-08-30 14:11:22,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:23,084 INFO L130 PetriNetUnfolder]: 3172/5155 cut-off events. [2023-08-30 14:11:23,084 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 14:11:23,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10261 conditions, 5155 events. 3172/5155 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32773 event pairs, 3172 based on Foata normal form. 548/4230 useless extension candidates. Maximal degree in co-relation 6625. Up to 5051 conditions per place. [2023-08-30 14:11:23,103 INFO L137 encePairwiseOnDemand]: 270/286 looper letters, 36 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 14:11:23,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 172 flow [2023-08-30 14:11:23,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-08-30 14:11:23,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116550116550117 [2023-08-30 14:11:23,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-08-30 14:11:23,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-08-30 14:11:23,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:23,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-08-30 14:11:23,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,110 INFO L175 Difference]: Start difference. First operand has 49 places, 58 transitions, 128 flow. Second operand 3 states and 439 transitions. [2023-08-30 14:11:23,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 172 flow [2023-08-30 14:11:23,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 170 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 14:11:23,112 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 98 flow [2023-08-30 14:11:23,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-08-30 14:11:23,112 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2023-08-30 14:11:23,113 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 98 flow [2023-08-30 14:11:23,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:23,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:11:23,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:11:23,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:11:23,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash 728206526, now seen corresponding path program 1 times [2023-08-30 14:11:23,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:23,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792384592] [2023-08-30 14:11:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:23,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:11:23,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:23,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792384592] [2023-08-30 14:11:23,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792384592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:23,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:23,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:23,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211707530] [2023-08-30 14:11:23,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:23,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:23,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:23,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:23,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:23,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 286 [2023-08-30 14:11:23,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:23,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 286 [2023-08-30 14:11:23,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:23,440 INFO L130 PetriNetUnfolder]: 3160/5099 cut-off events. [2023-08-30 14:11:23,440 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-30 14:11:23,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10172 conditions, 5099 events. 3160/5099 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 32188 event pairs, 3007 based on Foata normal form. 0/3651 useless extension candidates. Maximal degree in co-relation 10164. Up to 5007 conditions per place. [2023-08-30 14:11:23,456 INFO L137 encePairwiseOnDemand]: 282/286 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 14:11:23,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 228 flow [2023-08-30 14:11:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-30 14:11:23,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-30 14:11:23,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-30 14:11:23,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-30 14:11:23,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:23,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-30 14:11:23,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,461 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 98 flow. Second operand 3 states and 440 transitions. [2023-08-30 14:11:23,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 228 flow [2023-08-30 14:11:23,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:23,463 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 111 flow [2023-08-30 14:11:23,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-08-30 14:11:23,464 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-30 14:11:23,464 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 111 flow [2023-08-30 14:11:23,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:23,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:23,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:11:23,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:11:23,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash -266634448, now seen corresponding path program 1 times [2023-08-30 14:11:23,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:23,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294964785] [2023-08-30 14:11:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:23,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:23,579 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 14:11:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:23,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294964785] [2023-08-30 14:11:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294964785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:23,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:23,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:23,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672485133] [2023-08-30 14:11:23,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:23,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:11:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:11:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:11:23,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 286 [2023-08-30 14:11:23,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:23,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 286 [2023-08-30 14:11:23,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:23,912 INFO L130 PetriNetUnfolder]: 2838/4591 cut-off events. [2023-08-30 14:11:23,912 INFO L131 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2023-08-30 14:11:23,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9722 conditions, 4591 events. 2838/4591 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 28253 event pairs, 1099 based on Foata normal form. 0/3583 useless extension candidates. Maximal degree in co-relation 9712. Up to 4230 conditions per place. [2023-08-30 14:11:23,949 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 56 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-30 14:11:23,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 297 flow [2023-08-30 14:11:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:11:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:11:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-08-30 14:11:23,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.493006993006993 [2023-08-30 14:11:23,951 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-08-30 14:11:23,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-08-30 14:11:23,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:23,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-08-30 14:11:23,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,954 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,955 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 111 flow. Second operand 4 states and 564 transitions. [2023-08-30 14:11:23,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 297 flow [2023-08-30 14:11:23,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:23,956 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 160 flow [2023-08-30 14:11:23,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2023-08-30 14:11:23,957 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2023-08-30 14:11:23,957 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 160 flow [2023-08-30 14:11:23,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:23,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:11:23,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:11:23,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:11:23,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:23,958 INFO L85 PathProgramCache]: Analyzing trace with hash -514477489, now seen corresponding path program 1 times [2023-08-30 14:11:23,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064396774] [2023-08-30 14:11:23,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:23,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:11:23,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:23,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064396774] [2023-08-30 14:11:23,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064396774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:23,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:23,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:23,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805979482] [2023-08-30 14:11:23,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:23,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:23,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:23,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:23,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:23,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 286 [2023-08-30 14:11:23,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:23,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:23,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 286 [2023-08-30 14:11:23,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:24,259 INFO L130 PetriNetUnfolder]: 2512/4043 cut-off events. [2023-08-30 14:11:24,260 INFO L131 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2023-08-30 14:11:24,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9497 conditions, 4043 events. 2512/4043 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 25579 event pairs, 494 based on Foata normal form. 0/3440 useless extension candidates. Maximal degree in co-relation 9484. Up to 3145 conditions per place. [2023-08-30 14:11:24,280 INFO L137 encePairwiseOnDemand]: 282/286 looper letters, 67 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-08-30 14:11:24,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 382 flow [2023-08-30 14:11:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-30 14:11:24,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221445221445221 [2023-08-30 14:11:24,282 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-30 14:11:24,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-30 14:11:24,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:24,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-30 14:11:24,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:24,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:24,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:24,285 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 160 flow. Second operand 3 states and 448 transitions. [2023-08-30 14:11:24,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 382 flow [2023-08-30 14:11:24,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:11:24,290 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 172 flow [2023-08-30 14:11:24,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-30 14:11:24,293 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2023-08-30 14:11:24,293 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 172 flow [2023-08-30 14:11:24,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:24,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:24,295 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:11:24,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:11:24,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:11:24,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash -491590897, now seen corresponding path program 1 times [2023-08-30 14:11:24,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:24,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84417044] [2023-08-30 14:11:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:24,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:24,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:11:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:24,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:11:24,334 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:11:24,334 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-08-30 14:11:24,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-08-30 14:11:24,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-08-30 14:11:24,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-08-30 14:11:24,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-08-30 14:11:24,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-08-30 14:11:24,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-08-30 14:11:24,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-08-30 14:11:24,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-08-30 14:11:24,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-08-30 14:11:24,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-08-30 14:11:24,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-08-30 14:11:24,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-08-30 14:11:24,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-08-30 14:11:24,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-08-30 14:11:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:11:24,337 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 14:11:24,337 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:11:24,337 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:11:24,350 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 14:11:24,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 193 transitions, 407 flow [2023-08-30 14:11:24,377 INFO L130 PetriNetUnfolder]: 34/301 cut-off events. [2023-08-30 14:11:24,377 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 14:11:24,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 301 events. 34/301 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 954 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2023-08-30 14:11:24,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 193 transitions, 407 flow [2023-08-30 14:11:24,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 193 transitions, 407 flow [2023-08-30 14:11:24,381 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:11:24,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 193 transitions, 407 flow [2023-08-30 14:11:24,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 193 transitions, 407 flow [2023-08-30 14:11:24,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 193 transitions, 407 flow [2023-08-30 14:11:24,405 INFO L130 PetriNetUnfolder]: 34/301 cut-off events. [2023-08-30 14:11:24,405 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 14:11:24,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 301 events. 34/301 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 954 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2023-08-30 14:11:24,415 INFO L119 LiptonReduction]: Number of co-enabled transitions 19440 [2023-08-30 14:11:26,921 INFO L134 LiptonReduction]: Checked pairs total: 45807 [2023-08-30 14:11:26,922 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-30 14:11:26,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:11:26,923 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;@3d87f725, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:11:26,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-30 14:11:26,925 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2023-08-30 14:11:26,925 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:26,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:26,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:11:26,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:11:26,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:26,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1106289794, now seen corresponding path program 1 times [2023-08-30 14:11:26,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:26,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486430472] [2023-08-30 14:11:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:26,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:26,962 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 14:11:26,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:26,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486430472] [2023-08-30 14:11:26,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486430472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:26,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:26,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:26,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279494280] [2023-08-30 14:11:26,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:26,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:26,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:26,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:26,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:26,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 356 [2023-08-30 14:11:26,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 80 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:26,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:26,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 356 [2023-08-30 14:11:26,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:32,107 INFO L130 PetriNetUnfolder]: 77017/108132 cut-off events. [2023-08-30 14:11:32,107 INFO L131 PetriNetUnfolder]: For 1261/1261 co-relation queries the response was YES. [2023-08-30 14:11:32,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215448 conditions, 108132 events. 77017/108132 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 3874. Compared 806290 event pairs, 49933 based on Foata normal form. 12494/86932 useless extension candidates. Maximal degree in co-relation 21019. Up to 106359 conditions per place. [2023-08-30 14:11:32,612 INFO L137 encePairwiseOnDemand]: 331/356 looper letters, 64 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 14:11:32,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 301 flow [2023-08-30 14:11:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-08-30 14:11:32,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468164794007491 [2023-08-30 14:11:32,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-08-30 14:11:32,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-08-30 14:11:32,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:32,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-08-30 14:11:32,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,619 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 181 flow. Second operand 3 states and 584 transitions. [2023-08-30 14:11:32,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 301 flow [2023-08-30 14:11:32,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 295 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 14:11:32,623 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 151 flow [2023-08-30 14:11:32,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-08-30 14:11:32,625 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-30 14:11:32,625 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 151 flow [2023-08-30 14:11:32,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:32,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:32,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:11:32,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:11:32,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1998864444, now seen corresponding path program 1 times [2023-08-30 14:11:32,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:32,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89310157] [2023-08-30 14:11:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:32,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:32,701 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 14:11:32,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89310157] [2023-08-30 14:11:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89310157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:32,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:32,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:32,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23940166] [2023-08-30 14:11:32,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:11:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:11:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:11:32,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 356 [2023-08-30 14:11:32,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:32,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:32,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 356 [2023-08-30 14:11:32,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:37,559 INFO L130 PetriNetUnfolder]: 73335/101843 cut-off events. [2023-08-30 14:11:37,560 INFO L131 PetriNetUnfolder]: For 6151/6151 co-relation queries the response was YES. [2023-08-30 14:11:37,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214986 conditions, 101843 events. 73335/101843 cut-off events. For 6151/6151 co-relation queries the response was YES. Maximal size of possible extension queue 4029. Compared 741626 event pairs, 35728 based on Foata normal form. 0/73449 useless extension candidates. Maximal degree in co-relation 214902. Up to 99949 conditions per place. [2023-08-30 14:11:38,109 INFO L137 encePairwiseOnDemand]: 345/356 looper letters, 77 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2023-08-30 14:11:38,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 406 flow [2023-08-30 14:11:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:11:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:11:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 719 transitions. [2023-08-30 14:11:38,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049157303370787 [2023-08-30 14:11:38,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 719 transitions. [2023-08-30 14:11:38,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 719 transitions. [2023-08-30 14:11:38,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:38,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 719 transitions. [2023-08-30 14:11:38,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.75) internal successors, (719), 4 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 14:11:38,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,115 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,116 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 151 flow. Second operand 4 states and 719 transitions. [2023-08-30 14:11:38,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 406 flow [2023-08-30 14:11:38,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:38,127 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 220 flow [2023-08-30 14:11:38,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-30 14:11:38,128 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-08-30 14:11:38,128 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 220 flow [2023-08-30 14:11:38,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:38,129 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:11:38,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:11:38,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:11:38,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:38,129 INFO L85 PathProgramCache]: Analyzing trace with hash -583683939, now seen corresponding path program 1 times [2023-08-30 14:11:38,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:38,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871389892] [2023-08-30 14:11:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:38,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:11:38,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:38,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871389892] [2023-08-30 14:11:38,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871389892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:38,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:38,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:38,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229294979] [2023-08-30 14:11:38,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:38,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:38,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:38,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:38,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:38,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 356 [2023-08-30 14:11:38,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:38,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:38,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 356 [2023-08-30 14:11:38,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:42,902 INFO L130 PetriNetUnfolder]: 65748/91279 cut-off events. [2023-08-30 14:11:42,902 INFO L131 PetriNetUnfolder]: For 23932/24319 co-relation queries the response was YES. [2023-08-30 14:11:43,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218199 conditions, 91279 events. 65748/91279 cut-off events. For 23932/24319 co-relation queries the response was YES. Maximal size of possible extension queue 3583. Compared 656351 event pairs, 27857 based on Foata normal form. 2/72525 useless extension candidates. Maximal degree in co-relation 195854. Up to 62407 conditions per place. [2023-08-30 14:11:43,300 INFO L137 encePairwiseOnDemand]: 352/356 looper letters, 98 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-08-30 14:11:43,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 545 flow [2023-08-30 14:11:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-30 14:11:43,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411985018726592 [2023-08-30 14:11:43,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-30 14:11:43,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-30 14:11:43,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:43,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-30 14:11:43,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:43,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:43,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:43,306 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 220 flow. Second operand 3 states and 578 transitions. [2023-08-30 14:11:43,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 545 flow [2023-08-30 14:11:43,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 110 transitions, 545 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:11:43,333 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 232 flow [2023-08-30 14:11:43,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2023-08-30 14:11:43,333 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-30 14:11:43,333 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 232 flow [2023-08-30 14:11:43,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:43,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:43,334 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:11:43,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:11:43,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:11:43,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash -583683981, now seen corresponding path program 1 times [2023-08-30 14:11:43,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:43,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199046151] [2023-08-30 14:11:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:43,355 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 14:11:43,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:43,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199046151] [2023-08-30 14:11:43,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199046151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:43,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:43,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:43,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716156895] [2023-08-30 14:11:43,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:43,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:43,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:43,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:43,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:43,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 356 [2023-08-30 14:11:43,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:43,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:43,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 356 [2023-08-30 14:11:43,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:47,865 INFO L130 PetriNetUnfolder]: 58161/81223 cut-off events. [2023-08-30 14:11:47,865 INFO L131 PetriNetUnfolder]: For 43724/44703 co-relation queries the response was YES. [2023-08-30 14:11:47,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200714 conditions, 81223 events. 58161/81223 cut-off events. For 43724/44703 co-relation queries the response was YES. Maximal size of possible extension queue 3097. Compared 572969 event pairs, 55327 based on Foata normal form. 2793/69464 useless extension candidates. Maximal degree in co-relation 139672. Up to 80595 conditions per place. [2023-08-30 14:11:48,213 INFO L137 encePairwiseOnDemand]: 354/356 looper letters, 58 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-30 14:11:48,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 67 transitions, 346 flow [2023-08-30 14:11:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2023-08-30 14:11:48,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056179775280899 [2023-08-30 14:11:48,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2023-08-30 14:11:48,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2023-08-30 14:11:48,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:48,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2023-08-30 14:11:48,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:48,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:48,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:48,218 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 232 flow. Second operand 3 states and 540 transitions. [2023-08-30 14:11:48,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 67 transitions, 346 flow [2023-08-30 14:11:48,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 67 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:48,249 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 226 flow [2023-08-30 14:11:48,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2023-08-30 14:11:48,250 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-30 14:11:48,250 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 226 flow [2023-08-30 14:11:48,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:48,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:48,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:48,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:11:48,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:11:48,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:48,251 INFO L85 PathProgramCache]: Analyzing trace with hash 808726471, now seen corresponding path program 1 times [2023-08-30 14:11:48,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:48,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482840562] [2023-08-30 14:11:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:48,292 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 14:11:48,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:48,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482840562] [2023-08-30 14:11:48,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482840562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:48,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:48,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:11:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588647495] [2023-08-30 14:11:48,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:48,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:48,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 356 [2023-08-30 14:11:48,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:48,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:48,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 356 [2023-08-30 14:11:48,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:55,282 INFO L130 PetriNetUnfolder]: 88471/126824 cut-off events. [2023-08-30 14:11:55,282 INFO L131 PetriNetUnfolder]: For 47490/47855 co-relation queries the response was YES. [2023-08-30 14:11:55,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305712 conditions, 126824 events. 88471/126824 cut-off events. For 47490/47855 co-relation queries the response was YES. Maximal size of possible extension queue 4600. Compared 978842 event pairs, 34021 based on Foata normal form. 21/108004 useless extension candidates. Maximal degree in co-relation 305695. Up to 66152 conditions per place. [2023-08-30 14:11:55,884 INFO L137 encePairwiseOnDemand]: 338/356 looper letters, 90 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2023-08-30 14:11:55,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 120 transitions, 632 flow [2023-08-30 14:11:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:11:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:11:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-30 14:11:55,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5383895131086143 [2023-08-30 14:11:55,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-30 14:11:55,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-30 14:11:55,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:55,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-30 14:11:55,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:55,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:55,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:55,889 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 226 flow. Second operand 3 states and 575 transitions. [2023-08-30 14:11:55,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 120 transitions, 632 flow [2023-08-30 14:11:55,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:11:55,931 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 437 flow [2023-08-30 14:11:55,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=437, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2023-08-30 14:11:55,932 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2023-08-30 14:11:55,932 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 437 flow [2023-08-30 14:11:55,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:55,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:55,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:55,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:11:55,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:11:55,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash 808726439, now seen corresponding path program 1 times [2023-08-30 14:11:55,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:55,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887484530] [2023-08-30 14:11:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:55,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:56,036 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 14:11:56,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887484530] [2023-08-30 14:11:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887484530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:56,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:56,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:11:56,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665097387] [2023-08-30 14:11:56,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:56,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:11:56,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:56,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:11:56,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:11:56,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 356 [2023-08-30 14:11:56,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 437 flow. Second operand has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:56,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:56,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 356 [2023-08-30 14:11:56,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:05,744 INFO L130 PetriNetUnfolder]: 111004/162913 cut-off events. [2023-08-30 14:12:05,744 INFO L131 PetriNetUnfolder]: For 177625/177914 co-relation queries the response was YES. [2023-08-30 14:12:06,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460498 conditions, 162913 events. 111004/162913 cut-off events. For 177625/177914 co-relation queries the response was YES. Maximal size of possible extension queue 6189. Compared 1339892 event pairs, 25945 based on Foata normal form. 5427/167957 useless extension candidates. Maximal degree in co-relation 460478. Up to 111239 conditions per place. [2023-08-30 14:12:06,835 INFO L137 encePairwiseOnDemand]: 334/356 looper letters, 205 selfloop transitions, 61 changer transitions 0/274 dead transitions. [2023-08-30 14:12:06,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 274 transitions, 1771 flow [2023-08-30 14:12:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:12:06,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:12:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1608 transitions. [2023-08-30 14:12:06,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50187265917603 [2023-08-30 14:12:06,838 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1608 transitions. [2023-08-30 14:12:06,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1608 transitions. [2023-08-30 14:12:06,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:06,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1608 transitions. [2023-08-30 14:12:06,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 178.66666666666666) internal successors, (1608), 9 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:06,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:06,845 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:06,845 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 437 flow. Second operand 9 states and 1608 transitions. [2023-08-30 14:12:06,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 274 transitions, 1771 flow [2023-08-30 14:12:07,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 274 transitions, 1657 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:12:07,016 INFO L231 Difference]: Finished difference. Result has 91 places, 134 transitions, 977 flow [2023-08-30 14:12:07,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=977, PETRI_PLACES=91, PETRI_TRANSITIONS=134} [2023-08-30 14:12:07,016 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 24 predicate places. [2023-08-30 14:12:07,016 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 134 transitions, 977 flow [2023-08-30 14:12:07,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:07,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:07,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:12:07,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:12:07,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:12:07,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash -653813089, now seen corresponding path program 1 times [2023-08-30 14:12:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860660133] [2023-08-30 14:12:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:07,119 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 14:12:07,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:07,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860660133] [2023-08-30 14:12:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860660133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:12:07,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293052953] [2023-08-30 14:12:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:07,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:12:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:12:07,122 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 14:12:07,125 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 14:12:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:07,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 14:12:07,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:12:07,281 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:12:07,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:12:07,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:12:07,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:12:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:07,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:12:07,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293052953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:07,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:12:07,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-30 14:12:07,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732658951] [2023-08-30 14:12:07,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:07,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:12:07,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:12:07,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 14:12:07,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 356 [2023-08-30 14:12:07,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 134 transitions, 977 flow. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:07,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:07,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 356 [2023-08-30 14:12:07,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:19,656 INFO L130 PetriNetUnfolder]: 117916/175850 cut-off events. [2023-08-30 14:12:19,657 INFO L131 PetriNetUnfolder]: For 334156/339618 co-relation queries the response was YES. [2023-08-30 14:12:20,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569850 conditions, 175850 events. 117916/175850 cut-off events. For 334156/339618 co-relation queries the response was YES. Maximal size of possible extension queue 6749. Compared 1507621 event pairs, 42606 based on Foata normal form. 1549/176733 useless extension candidates. Maximal degree in co-relation 569824. Up to 91705 conditions per place. [2023-08-30 14:12:20,849 INFO L137 encePairwiseOnDemand]: 338/356 looper letters, 279 selfloop transitions, 54 changer transitions 0/341 dead transitions. [2023-08-30 14:12:20,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 341 transitions, 3026 flow [2023-08-30 14:12:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:12:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:12:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 954 transitions. [2023-08-30 14:12:20,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359550561797752 [2023-08-30 14:12:20,852 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 954 transitions. [2023-08-30 14:12:20,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 954 transitions. [2023-08-30 14:12:20,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:20,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 954 transitions. [2023-08-30 14:12:20,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:20,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:20,865 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:20,865 INFO L175 Difference]: Start difference. First operand has 91 places, 134 transitions, 977 flow. Second operand 5 states and 954 transitions. [2023-08-30 14:12:20,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 341 transitions, 3026 flow [2023-08-30 14:12:21,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 341 transitions, 2941 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-08-30 14:12:21,393 INFO L231 Difference]: Finished difference. Result has 96 places, 173 transitions, 1537 flow [2023-08-30 14:12:21,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1537, PETRI_PLACES=96, PETRI_TRANSITIONS=173} [2023-08-30 14:12:21,393 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 29 predicate places. [2023-08-30 14:12:21,393 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 173 transitions, 1537 flow [2023-08-30 14:12:21,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:21,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:21,394 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:12:21,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:12:21,594 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,SelfDestructingSolverStorable13 [2023-08-30 14:12:21,594 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:12:21,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:21,595 INFO L85 PathProgramCache]: Analyzing trace with hash -653813121, now seen corresponding path program 1 times [2023-08-30 14:12:21,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:21,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068295132] [2023-08-30 14:12:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:21,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:21,765 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 14:12:21,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:21,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068295132] [2023-08-30 14:12:21,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068295132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:12:21,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984933149] [2023-08-30 14:12:21,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:21,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:12:21,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:12:21,769 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 14:12:21,771 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 14:12:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:21,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 14:12:21,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:12:21,844 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:12:21,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:12:21,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:12:21,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 14:12:21,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:12:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:21,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:12:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984933149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:21,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:12:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 14:12:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609262241] [2023-08-30 14:12:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:12:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:12:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 14:12:22,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 356 [2023-08-30 14:12:22,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 173 transitions, 1537 flow. Second operand has 6 states, 6 states have (on average 155.66666666666666) internal successors, (934), 6 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:22,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:22,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 356 [2023-08-30 14:12:22,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:34,696 INFO L130 PetriNetUnfolder]: 114929/170423 cut-off events. [2023-08-30 14:12:34,696 INFO L131 PetriNetUnfolder]: For 484607/485224 co-relation queries the response was YES. [2023-08-30 14:12:35,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610040 conditions, 170423 events. 114929/170423 cut-off events. For 484607/485224 co-relation queries the response was YES. Maximal size of possible extension queue 6607. Compared 1434055 event pairs, 42320 based on Foata normal form. 570/170561 useless extension candidates. Maximal degree in co-relation 610010. Up to 160141 conditions per place. [2023-08-30 14:12:36,143 INFO L137 encePairwiseOnDemand]: 346/356 looper letters, 218 selfloop transitions, 39 changer transitions 0/265 dead transitions. [2023-08-30 14:12:36,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 265 transitions, 2641 flow [2023-08-30 14:12:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:12:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:12:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1048 transitions. [2023-08-30 14:12:36,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49063670411985016 [2023-08-30 14:12:36,146 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1048 transitions. [2023-08-30 14:12:36,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1048 transitions. [2023-08-30 14:12:36,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:36,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1048 transitions. [2023-08-30 14:12:36,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.66666666666666) internal successors, (1048), 6 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:36,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:36,151 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:36,151 INFO L175 Difference]: Start difference. First operand has 96 places, 173 transitions, 1537 flow. Second operand 6 states and 1048 transitions. [2023-08-30 14:12:36,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 265 transitions, 2641 flow [2023-08-30 14:12:40,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 265 transitions, 2641 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:12:40,657 INFO L231 Difference]: Finished difference. Result has 103 places, 198 transitions, 1945 flow [2023-08-30 14:12:40,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1945, PETRI_PLACES=103, PETRI_TRANSITIONS=198} [2023-08-30 14:12:40,658 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 36 predicate places. [2023-08-30 14:12:40,658 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 198 transitions, 1945 flow [2023-08-30 14:12:40,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.66666666666666) internal successors, (934), 6 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:40,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:40,658 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:12:40,664 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 14:12:40,858 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,SelfDestructingSolverStorable14 [2023-08-30 14:12:40,859 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:12:40,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1802068809, now seen corresponding path program 1 times [2023-08-30 14:12:40,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:40,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868856353] [2023-08-30 14:12:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:40,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:12:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:40,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:12:40,882 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:12:40,883 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-30 14:12:40,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-30 14:12:40,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-30 14:12:40,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-30 14:12:40,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-30 14:12:40,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-30 14:12:40,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-30 14:12:40,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-30 14:12:40,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-30 14:12:40,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-30 14:12:40,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-30 14:12:40,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-30 14:12:40,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-30 14:12:40,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-30 14:12:40,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-30 14:12:40,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-30 14:12:40,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-30 14:12:40,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-30 14:12:40,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-30 14:12:40,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:12:40,885 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:12:40,886 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:12:40,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:12:40,901 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 14:12:40,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 234 transitions, 500 flow [2023-08-30 14:12:40,929 INFO L130 PetriNetUnfolder]: 44/381 cut-off events. [2023-08-30 14:12:40,929 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 14:12:40,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 381 events. 44/381 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1267 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 309. Up to 10 conditions per place. [2023-08-30 14:12:40,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 234 transitions, 500 flow [2023-08-30 14:12:40,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 234 transitions, 500 flow [2023-08-30 14:12:40,933 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:12:40,933 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 234 transitions, 500 flow [2023-08-30 14:12:40,933 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 234 transitions, 500 flow [2023-08-30 14:12:40,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 234 transitions, 500 flow [2023-08-30 14:12:40,956 INFO L130 PetriNetUnfolder]: 44/381 cut-off events. [2023-08-30 14:12:40,957 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 14:12:40,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 381 events. 44/381 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1267 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 309. Up to 10 conditions per place. [2023-08-30 14:12:40,969 INFO L119 LiptonReduction]: Number of co-enabled transitions 32480 [2023-08-30 14:12:43,724 INFO L134 LiptonReduction]: Checked pairs total: 76822 [2023-08-30 14:12:43,725 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 14:12:43,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:12:43,727 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;@3d87f725, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:12:43,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 14:12:43,729 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-30 14:12:43,729 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:12:43,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:43,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:12:43,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-30 14:12:43,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1551293591, now seen corresponding path program 1 times [2023-08-30 14:12:43,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:43,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403720190] [2023-08-30 14:12:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:43,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:43,745 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 14:12:43,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:43,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403720190] [2023-08-30 14:12:43,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403720190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:43,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:43,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:43,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713340727] [2023-08-30 14:12:43,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:43,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:43,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:43,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:43,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:43,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 425 [2023-08-30 14:12:43,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 102 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:43,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:43,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 425 [2023-08-30 14:12:43,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand