./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_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_28-funptr_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 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --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 14:12:43,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:12:43,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:12:43,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:12:43,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:12:43,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:12:43,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:12:43,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:12:43,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:12:43,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:12:43,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:12:43,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:12:43,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:12:43,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:12:43,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:12:43,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:12:43,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:12:43,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:12:43,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:12:43,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:12:43,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:12:43,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:12:43,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:12:43,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:12:43,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:12:43,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:12:43,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:12:43,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:12:43,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:12:43,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:12:43,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:12:43,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:12:43,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:12:43,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:12:43,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:12:43,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:12:43,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:12:43,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:12:43,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:12:43,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:12:43,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:12:43,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:12:43,348 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:12:43,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:12:43,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:12:43,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:12:43,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:12:43,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:12:43,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:12:43,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:12:43,350 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:12:43,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:12:43,350 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:12:43,350 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:12:43,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:12:43,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:12:43,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:12:43,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:12:43,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:12:43,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:12:43,351 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:12:43,352 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:12:43,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:12:43,352 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:12:43,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:12:43,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:12:43,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:12:43,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:12:43,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:12:43,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:12:43,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:12:43,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:12:43,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:12:43,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:12:43,353 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:12:43,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:12:43,354 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:12:43,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:12:43,354 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:12:43,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:12:43,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:12:43,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:12:43,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:12:43,598 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:12:43,598 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:12:43,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-30 14:12:44,554 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:12:44,828 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:12:44,833 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-30 14:12:44,857 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90cee92a/27faa001b2014869928c04160f5fc794/FLAG039c6cc40 [2023-08-30 14:12:44,867 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90cee92a/27faa001b2014869928c04160f5fc794 [2023-08-30 14:12:44,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:12:44,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:12:44,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:12:44,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:12:44,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:12:44,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:12:44" (1/1) ... [2023-08-30 14:12:44,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae966ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:44, skipping insertion in model container [2023-08-30 14:12:44,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:12:44" (1/1) ... [2023-08-30 14:12:44,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:12:44,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:12:45,198 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_28-funptr_racefree.i[41323,41336] [2023-08-30 14:12:45,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:12:45,228 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:12:45,257 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_28-funptr_racefree.i[41323,41336] [2023-08-30 14:12:45,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:12:45,323 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 14:12:45,327 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:12:45,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45 WrapperNode [2023-08-30 14:12:45,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:12:45,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:12:45,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:12:45,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:12:45,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,385 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2023-08-30 14:12:45,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:12:45,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:12:45,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:12:45,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:12:45,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,414 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:12:45,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:12:45,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:12:45,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:12:45,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (1/1) ... [2023-08-30 14:12:45,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:12:45,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:12:45,439 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 14:12:45,449 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 14:12:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:12:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:12:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:12:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:12:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:12:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:12:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:12:45,468 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:12:45,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:12:45,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:12:45,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:12:45,469 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 14:12:45,578 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:12:45,579 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:12:45,829 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:12:45,834 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:12:45,835 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:12:45,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:12:45 BoogieIcfgContainer [2023-08-30 14:12:45,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:12:45,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:12:45,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:12:45,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:12:45,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:12:44" (1/3) ... [2023-08-30 14:12:45,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67559b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:12:45, skipping insertion in model container [2023-08-30 14:12:45,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:45" (2/3) ... [2023-08-30 14:12:45,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67559b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:12:45, skipping insertion in model container [2023-08-30 14:12:45,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:12:45" (3/3) ... [2023-08-30 14:12:45,842 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-08-30 14:12:45,847 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:12:45,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:12:45,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:12:45,854 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:12:45,944 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:12:45,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 134 transitions, 276 flow [2023-08-30 14:12:46,043 INFO L130 PetriNetUnfolder]: 17/170 cut-off events. [2023-08-30 14:12:46,045 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:12:46,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 170 events. 17/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 389 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-30 14:12:46,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 134 transitions, 276 flow [2023-08-30 14:12:46,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 131 transitions, 270 flow [2023-08-30 14:12:46,061 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:12:46,071 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 131 transitions, 270 flow [2023-08-30 14:12:46,080 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 131 transitions, 270 flow [2023-08-30 14:12:46,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 131 transitions, 270 flow [2023-08-30 14:12:46,103 INFO L130 PetriNetUnfolder]: 16/167 cut-off events. [2023-08-30 14:12:46,107 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:12:46,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 167 events. 16/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 387 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-30 14:12:46,110 INFO L119 LiptonReduction]: Number of co-enabled transitions 4048 [2023-08-30 14:12:48,716 INFO L134 LiptonReduction]: Checked pairs total: 7551 [2023-08-30 14:12:48,716 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-30 14:12:48,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:12:48,732 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;@f7728b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:12:48,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:12:48,735 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-30 14:12:48,735 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:12:48,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:48,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:12:48,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:12:48,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 15761654, now seen corresponding path program 1 times [2023-08-30 14:12:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254118753] [2023-08-30 14:12:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:48,957 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 14:12:48,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:48,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254118753] [2023-08-30 14:12:48,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254118753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:48,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:48,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:48,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84957804] [2023-08-30 14:12:48,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:48,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:48,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:49,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:49,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:49,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-30 14:12:49,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:49,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:49,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-30 14:12:49,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:49,107 INFO L130 PetriNetUnfolder]: 130/320 cut-off events. [2023-08-30 14:12:49,108 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:12:49,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 320 events. 130/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1535 event pairs, 0 based on Foata normal form. 11/272 useless extension candidates. Maximal degree in co-relation 583. Up to 274 conditions per place. [2023-08-30 14:12:49,110 INFO L137 encePairwiseOnDemand]: 235/249 looper letters, 40 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-30 14:12:49,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 186 flow [2023-08-30 14:12:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-08-30 14:12:49,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461847389558233 [2023-08-30 14:12:49,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-08-30 14:12:49,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-08-30 14:12:49,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:49,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-08-30 14:12:49,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:49,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:49,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:49,147 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 96 flow. Second operand 3 states and 408 transitions. [2023-08-30 14:12:49,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 186 flow [2023-08-30 14:12:49,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:12:49,151 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 82 flow [2023-08-30 14:12:49,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-30 14:12:49,155 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-08-30 14:12:49,155 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 82 flow [2023-08-30 14:12:49,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:49,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:49,156 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:12:49,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:12:49,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:12:49,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2032872545, now seen corresponding path program 1 times [2023-08-30 14:12:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:49,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571434373] [2023-08-30 14:12:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:49,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:49,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:12:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:49,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:12:49,207 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:12:49,208 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:12:49,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:12:49,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:12:49,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:12:49,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:12:49,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:12:49,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:12:49,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:12:49,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:12:49,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:12:49,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:12:49,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:12:49,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:12:49,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:12:49,212 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:12:49,214 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:12:49,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:12:49,230 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:12:49,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 378 flow [2023-08-30 14:12:49,272 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-30 14:12:49,273 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:12:49,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 863 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-08-30 14:12:49,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 378 flow [2023-08-30 14:12:49,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 180 transitions, 378 flow [2023-08-30 14:12:49,280 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:12:49,280 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 180 transitions, 378 flow [2023-08-30 14:12:49,280 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 180 transitions, 378 flow [2023-08-30 14:12:49,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 378 flow [2023-08-30 14:12:49,299 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-30 14:12:49,299 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:12:49,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 863 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-08-30 14:12:49,312 INFO L119 LiptonReduction]: Number of co-enabled transitions 13640 [2023-08-30 14:12:51,770 INFO L134 LiptonReduction]: Checked pairs total: 34494 [2023-08-30 14:12:51,770 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-30 14:12:51,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:12:51,772 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;@f7728b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:12:51,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:12:51,774 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 14:12:51,774 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:12:51,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:51,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:12:51,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:12:51,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:51,775 INFO L85 PathProgramCache]: Analyzing trace with hash 837050439, now seen corresponding path program 1 times [2023-08-30 14:12:51,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:51,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870377055] [2023-08-30 14:12:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:51,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:51,862 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 14:12:51,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:51,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870377055] [2023-08-30 14:12:51,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870377055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:51,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:51,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:51,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469350265] [2023-08-30 14:12:51,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:51,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:51,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:51,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 319 [2023-08-30 14:12:51,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:51,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:51,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 319 [2023-08-30 14:12:51,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:52,695 INFO L130 PetriNetUnfolder]: 8133/13065 cut-off events. [2023-08-30 14:12:52,695 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2023-08-30 14:12:52,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25981 conditions, 13065 events. 8133/13065 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 84779 event pairs, 3859 based on Foata normal form. 511/10166 useless extension candidates. Maximal degree in co-relation 2496. Up to 12770 conditions per place. [2023-08-30 14:12:52,780 INFO L137 encePairwiseOnDemand]: 300/319 looper letters, 70 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-30 14:12:52,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 320 flow [2023-08-30 14:12:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-30 14:12:52,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5820271682340648 [2023-08-30 14:12:52,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-30 14:12:52,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-30 14:12:52,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:52,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-30 14:12:52,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,790 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 168 flow. Second operand 3 states and 557 transitions. [2023-08-30 14:12:52,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 320 flow [2023-08-30 14:12:52,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:12:52,793 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 156 flow [2023-08-30 14:12:52,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-30 14:12:52,794 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-08-30 14:12:52,795 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 156 flow [2023-08-30 14:12:52,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:52,796 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:12:52,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:12:52,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:12:52,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:52,797 INFO L85 PathProgramCache]: Analyzing trace with hash -263968354, now seen corresponding path program 1 times [2023-08-30 14:12:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:52,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564279550] [2023-08-30 14:12:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:52,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:52,860 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 14:12:52,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:52,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564279550] [2023-08-30 14:12:52,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564279550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:52,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:52,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:12:52,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088539132] [2023-08-30 14:12:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:52,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:52,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:52,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 319 [2023-08-30 14:12:52,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:52,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 319 [2023-08-30 14:12:52,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:53,589 INFO L130 PetriNetUnfolder]: 7556/12322 cut-off events. [2023-08-30 14:12:53,589 INFO L131 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2023-08-30 14:12:53,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25301 conditions, 12322 events. 7556/12322 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 82407 event pairs, 1458 based on Foata normal form. 0/9692 useless extension candidates. Maximal degree in co-relation 24517. Up to 9494 conditions per place. [2023-08-30 14:12:53,641 INFO L137 encePairwiseOnDemand]: 315/319 looper letters, 84 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-08-30 14:12:53,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 95 transitions, 396 flow [2023-08-30 14:12:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-30 14:12:53,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5715778474399164 [2023-08-30 14:12:53,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-30 14:12:53,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-30 14:12:53,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:53,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-30 14:12:53,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:53,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:53,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:53,651 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 156 flow. Second operand 3 states and 547 transitions. [2023-08-30 14:12:53,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 95 transitions, 396 flow [2023-08-30 14:12:53,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:12:53,655 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 166 flow [2023-08-30 14:12:53,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-08-30 14:12:53,658 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2023-08-30 14:12:53,658 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 166 flow [2023-08-30 14:12:53,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:53,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:53,658 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:12:53,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:12:53,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:12:53,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -263968377, now seen corresponding path program 1 times [2023-08-30 14:12:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:53,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119770919] [2023-08-30 14:12:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:53,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:53,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119770919] [2023-08-30 14:12:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119770919] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:12:53,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874817920] [2023-08-30 14:12:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:53,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:12:53,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:12:53,746 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 14:12:53,769 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 14:12:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:53,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:12:53,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:12:53,892 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 14:12:53,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:12:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874817920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:53,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:12:53,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:12:53,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351404087] [2023-08-30 14:12:53,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:53,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:12:53,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:53,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:12:53,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:12:53,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 319 [2023-08-30 14:12:53,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:53,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:53,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 319 [2023-08-30 14:12:53,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:54,578 INFO L130 PetriNetUnfolder]: 6979/11265 cut-off events. [2023-08-30 14:12:54,578 INFO L131 PetriNetUnfolder]: For 2917/2917 co-relation queries the response was YES. [2023-08-30 14:12:54,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24036 conditions, 11265 events. 6979/11265 cut-off events. For 2917/2917 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 70393 event pairs, 3281 based on Foata normal form. 306/9376 useless extension candidates. Maximal degree in co-relation 2228. Up to 11003 conditions per place. [2023-08-30 14:12:54,619 INFO L137 encePairwiseOnDemand]: 316/319 looper letters, 68 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 14:12:54,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 334 flow [2023-08-30 14:12:54,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:12:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:12:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 687 transitions. [2023-08-30 14:12:54,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384012539184952 [2023-08-30 14:12:54,621 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 687 transitions. [2023-08-30 14:12:54,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 687 transitions. [2023-08-30 14:12:54,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:54,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 687 transitions. [2023-08-30 14:12:54,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:54,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:54,626 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:54,626 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 166 flow. Second operand 4 states and 687 transitions. [2023-08-30 14:12:54,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 334 flow [2023-08-30 14:12:54,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:12:54,628 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 162 flow [2023-08-30 14:12:54,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-30 14:12:54,630 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2023-08-30 14:12:54,630 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 162 flow [2023-08-30 14:12:54,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:54,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:54,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:12:54,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:12:54,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:12:54,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:12:54,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash 696314233, now seen corresponding path program 1 times [2023-08-30 14:12:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:54,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132110936] [2023-08-30 14:12:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:54,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:54,922 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 14:12:54,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:54,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132110936] [2023-08-30 14:12:54,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132110936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:54,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:54,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:54,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16879910] [2023-08-30 14:12:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:54,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:54,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 319 [2023-08-30 14:12:54,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:54,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:54,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 319 [2023-08-30 14:12:54,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:55,541 INFO L130 PetriNetUnfolder]: 6655/10670 cut-off events. [2023-08-30 14:12:55,542 INFO L131 PetriNetUnfolder]: For 1688/1688 co-relation queries the response was YES. [2023-08-30 14:12:55,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22573 conditions, 10670 events. 6655/10670 cut-off events. For 1688/1688 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 63311 event pairs, 2382 based on Foata normal form. 0/8883 useless extension candidates. Maximal degree in co-relation 22442. Up to 8843 conditions per place. [2023-08-30 14:12:55,581 INFO L137 encePairwiseOnDemand]: 312/319 looper letters, 79 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-30 14:12:55,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 88 transitions, 399 flow [2023-08-30 14:12:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2023-08-30 14:12:55,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5663531870428422 [2023-08-30 14:12:55,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2023-08-30 14:12:55,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2023-08-30 14:12:55,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:55,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2023-08-30 14:12:55,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:55,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:55,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:55,587 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 162 flow. Second operand 3 states and 542 transitions. [2023-08-30 14:12:55,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 88 transitions, 399 flow [2023-08-30 14:12:55,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 88 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:12:55,590 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 184 flow [2023-08-30 14:12:55,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-30 14:12:55,590 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 6 predicate places. [2023-08-30 14:12:55,591 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 184 flow [2023-08-30 14:12:55,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:55,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:55,591 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:12:55,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:12:55,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:12:55,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash -270476074, now seen corresponding path program 1 times [2023-08-30 14:12:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:55,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726526210] [2023-08-30 14:12:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:55,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:12:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:55,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:12:55,612 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:12:55,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:12:55,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:12:55,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:12:55,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:12:55,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:12:55,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:12:55,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:12:55,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:12:55,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:12:55,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:12:55,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:12:55,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:12:55,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:12:55,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:12:55,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:12:55,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:12:55,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:12:55,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:12:55,616 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 14:12:55,616 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:12:55,617 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:12:55,635 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:12:55,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 226 transitions, 482 flow [2023-08-30 14:12:55,671 INFO L130 PetriNetUnfolder]: 50/445 cut-off events. [2023-08-30 14:12:55,671 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:12:55,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 50/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1571 event pairs, 1 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-08-30 14:12:55,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 226 transitions, 482 flow [2023-08-30 14:12:55,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 226 transitions, 482 flow [2023-08-30 14:12:55,675 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:12:55,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 226 transitions, 482 flow [2023-08-30 14:12:55,676 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 226 transitions, 482 flow [2023-08-30 14:12:55,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 226 transitions, 482 flow [2023-08-30 14:12:55,708 INFO L130 PetriNetUnfolder]: 50/445 cut-off events. [2023-08-30 14:12:55,709 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:12:55,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 50/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1571 event pairs, 1 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-08-30 14:12:55,723 INFO L119 LiptonReduction]: Number of co-enabled transitions 26664 [2023-08-30 14:12:58,484 INFO L134 LiptonReduction]: Checked pairs total: 82170 [2023-08-30 14:12:58,485 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-30 14:12:58,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:12:58,486 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;@f7728b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:12:58,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:12:58,487 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 14:12:58,487 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:12:58,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:58,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:12:58,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:12:58,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:58,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1257776456, now seen corresponding path program 1 times [2023-08-30 14:12:58,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:58,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10456863] [2023-08-30 14:12:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:58,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:58,516 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 14:12:58,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:58,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10456863] [2023-08-30 14:12:58,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10456863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:58,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:58,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:58,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269220054] [2023-08-30 14:12:58,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:58,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:58,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:58,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:58,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 395 [2023-08-30 14:12:58,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:58,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:58,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 395 [2023-08-30 14:12:58,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:13:13,836 INFO L130 PetriNetUnfolder]: 205155/288571 cut-off events. [2023-08-30 14:13:13,836 INFO L131 PetriNetUnfolder]: For 3553/3553 co-relation queries the response was YES. [2023-08-30 14:13:14,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573456 conditions, 288571 events. 205155/288571 cut-off events. For 3553/3553 co-relation queries the response was YES. Maximal size of possible extension queue 5738. Compared 2180193 event pairs, 133481 based on Foata normal form. 17835/230080 useless extension candidates. Maximal degree in co-relation 40350. Up to 282520 conditions per place. [2023-08-30 14:13:15,199 INFO L137 encePairwiseOnDemand]: 370/395 looper letters, 88 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-08-30 14:13:15,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 410 flow [2023-08-30 14:13:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:13:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:13:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-08-30 14:13:15,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864978902953587 [2023-08-30 14:13:15,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-08-30 14:13:15,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-08-30 14:13:15,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:13:15,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-08-30 14:13:15,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,207 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 232 flow. Second operand 3 states and 695 transitions. [2023-08-30 14:13:15,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 410 flow [2023-08-30 14:13:15,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:13:15,212 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 208 flow [2023-08-30 14:13:15,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2023-08-30 14:13:15,213 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2023-08-30 14:13:15,213 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 208 flow [2023-08-30 14:13:15,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:13:15,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:13:15,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:13:15,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:13:15,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:13:15,215 INFO L85 PathProgramCache]: Analyzing trace with hash 555571949, now seen corresponding path program 1 times [2023-08-30 14:13:15,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:13:15,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123947274] [2023-08-30 14:13:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:15,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:13:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:15,239 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 14:13:15,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:13:15,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123947274] [2023-08-30 14:13:15,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123947274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:13:15,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:13:15,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:13:15,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750591516] [2023-08-30 14:13:15,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:13:15,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:13:15,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:13:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:13:15,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:13:15,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 395 [2023-08-30 14:13:15,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:15,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:13:15,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 395 [2023-08-30 14:13:15,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:13:28,867 INFO L130 PetriNetUnfolder]: 190791/270045 cut-off events. [2023-08-30 14:13:28,867 INFO L131 PetriNetUnfolder]: For 8022/8022 co-relation queries the response was YES. [2023-08-30 14:13:29,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550910 conditions, 270045 events. 190791/270045 cut-off events. For 8022/8022 co-relation queries the response was YES. Maximal size of possible extension queue 5318. Compared 2124563 event pairs, 38248 based on Foata normal form. 0/208125 useless extension candidates. Maximal degree in co-relation 550078. Up to 209171 conditions per place. [2023-08-30 14:13:30,166 INFO L137 encePairwiseOnDemand]: 391/395 looper letters, 116 selfloop transitions, 4 changer transitions 0/130 dead transitions. [2023-08-30 14:13:30,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 542 flow [2023-08-30 14:13:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:13:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:13:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-08-30 14:13:30,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5848101265822785 [2023-08-30 14:13:30,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-08-30 14:13:30,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-08-30 14:13:30,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:13:30,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-08-30 14:13:30,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:30,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:30,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:30,172 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 208 flow. Second operand 3 states and 693 transitions. [2023-08-30 14:13:30,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 542 flow [2023-08-30 14:13:30,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:13:30,183 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 218 flow [2023-08-30 14:13:30,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-08-30 14:13:30,184 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2023-08-30 14:13:30,184 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 218 flow [2023-08-30 14:13:30,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:30,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:13:30,185 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:13:30,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:13:30,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:13:30,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:13:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash 555571926, now seen corresponding path program 1 times [2023-08-30 14:13:30,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:13:30,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772331007] [2023-08-30 14:13:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:30,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:13:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:13:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:13:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772331007] [2023-08-30 14:13:30,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772331007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:13:30,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217995521] [2023-08-30 14:13:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:30,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:13:30,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:13:30,229 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 14:13:30,252 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 14:13:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:30,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:13:30,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:13:30,325 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 14:13:30,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:13:30,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217995521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:13:30,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:13:30,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:13:30,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110371106] [2023-08-30 14:13:30,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:13:30,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:13:30,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:13:30,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:13:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:13:30,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 395 [2023-08-30 14:13:30,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:30,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:13:30,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 395 [2023-08-30 14:13:30,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:13:43,096 INFO L130 PetriNetUnfolder]: 176427/248683 cut-off events. [2023-08-30 14:13:43,097 INFO L131 PetriNetUnfolder]: For 50173/50173 co-relation queries the response was YES. [2023-08-30 14:13:43,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520488 conditions, 248683 events. 176427/248683 cut-off events. For 50173/50173 co-relation queries the response was YES. Maximal size of possible extension queue 4675. Compared 1835211 event pairs, 114545 based on Foata normal form. 5184/200383 useless extension candidates. Maximal degree in co-relation 35922. Up to 243423 conditions per place. [2023-08-30 14:13:44,213 INFO L137 encePairwiseOnDemand]: 392/395 looper letters, 86 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-30 14:13:44,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 424 flow [2023-08-30 14:13:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:13:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:13:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 857 transitions. [2023-08-30 14:13:44,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424050632911392 [2023-08-30 14:13:44,216 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 857 transitions. [2023-08-30 14:13:44,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 857 transitions. [2023-08-30 14:13:44,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:13:44,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 857 transitions. [2023-08-30 14:13:44,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:44,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:44,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:44,221 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 218 flow. Second operand 4 states and 857 transitions. [2023-08-30 14:13:44,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 424 flow [2023-08-30 14:13:44,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:13:44,232 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 214 flow [2023-08-30 14:13:44,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-08-30 14:13:44,235 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 5 predicate places. [2023-08-30 14:13:44,235 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 214 flow [2023-08-30 14:13:44,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:44,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:13:44,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:13:44,242 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 14:13:44,440 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,SelfDestructingSolverStorable9 [2023-08-30 14:13:44,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:13:44,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:13:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1695989787, now seen corresponding path program 1 times [2023-08-30 14:13:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:13:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350043577] [2023-08-30 14:13:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:13:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:44,485 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 14:13:44,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:13:44,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350043577] [2023-08-30 14:13:44,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350043577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:13:44,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:13:44,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:13:44,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991153099] [2023-08-30 14:13:44,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:13:44,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:13:44,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:13:44,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:13:44,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:13:44,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 395 [2023-08-30 14:13:44,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:44,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:13:44,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 395 [2023-08-30 14:13:44,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:13:55,538 INFO L130 PetriNetUnfolder]: 164721/230976 cut-off events. [2023-08-30 14:13:55,538 INFO L131 PetriNetUnfolder]: For 27754/27754 co-relation queries the response was YES. [2023-08-30 14:13:55,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480212 conditions, 230976 events. 164721/230976 cut-off events. For 27754/27754 co-relation queries the response was YES. Maximal size of possible extension queue 4548. Compared 1683696 event pairs, 64275 based on Foata normal form. 0/183447 useless extension candidates. Maximal degree in co-relation 480080. Up to 215790 conditions per place. [2023-08-30 14:13:56,730 INFO L137 encePairwiseOnDemand]: 385/395 looper letters, 100 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-08-30 14:13:56,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 514 flow [2023-08-30 14:13:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:13:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:13:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-08-30 14:13:56,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5687763713080168 [2023-08-30 14:13:56,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-08-30 14:13:56,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-08-30 14:13:56,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:13:56,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-08-30 14:13:56,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:56,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:56,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:56,736 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 214 flow. Second operand 3 states and 674 transitions. [2023-08-30 14:13:56,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 514 flow [2023-08-30 14:13:56,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:13:56,751 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 247 flow [2023-08-30 14:13:56,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2023-08-30 14:13:56,752 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 6 predicate places. [2023-08-30 14:13:56,752 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 247 flow [2023-08-30 14:13:56,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:56,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:13:56,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:13:56,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:13:56,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:13:56,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:13:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2134128717, now seen corresponding path program 1 times [2023-08-30 14:13:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:13:56,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596249869] [2023-08-30 14:13:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:13:56,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:13:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:13:56,790 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 14:13:56,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:13:56,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596249869] [2023-08-30 14:13:56,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596249869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:13:56,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:13:56,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:13:56,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362442432] [2023-08-30 14:13:56,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:13:56,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:13:56,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:13:56,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:13:56,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:13:56,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 395 [2023-08-30 14:13:56,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:13:56,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:13:56,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 395 [2023-08-30 14:13:56,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:11,733 INFO L130 PetriNetUnfolder]: 210182/298989 cut-off events. [2023-08-30 14:14:11,733 INFO L131 PetriNetUnfolder]: For 55599/55599 co-relation queries the response was YES. [2023-08-30 14:14:12,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656664 conditions, 298989 events. 210182/298989 cut-off events. For 55599/55599 co-relation queries the response was YES. Maximal size of possible extension queue 6423. Compared 2329921 event pairs, 41906 based on Foata normal form. 0/254255 useless extension candidates. Maximal degree in co-relation 656536. Up to 176985 conditions per place. [2023-08-30 14:14:13,407 INFO L137 encePairwiseOnDemand]: 375/395 looper letters, 257 selfloop transitions, 29 changer transitions 0/296 dead transitions. [2023-08-30 14:14:13,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 296 transitions, 1411 flow [2023-08-30 14:14:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:14:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:14:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1579 transitions. [2023-08-30 14:14:13,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5710669077757685 [2023-08-30 14:14:13,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1579 transitions. [2023-08-30 14:14:13,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1579 transitions. [2023-08-30 14:14:13,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:13,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1579 transitions. [2023-08-30 14:14:13,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.57142857142858) internal successors, (1579), 7 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:13,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:13,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:13,416 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 247 flow. Second operand 7 states and 1579 transitions. [2023-08-30 14:14:13,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 296 transitions, 1411 flow [2023-08-30 14:14:13,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 296 transitions, 1405 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:13,435 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 495 flow [2023-08-30 14:14:13,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=495, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2023-08-30 14:14:13,436 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 16 predicate places. [2023-08-30 14:14:13,436 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 495 flow [2023-08-30 14:14:13,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:13,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:13,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:13,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:14:13,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:14:13,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:13,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2134128623, now seen corresponding path program 1 times [2023-08-30 14:14:13,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:13,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509988964] [2023-08-30 14:14:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:13,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:14:13,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:13,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509988964] [2023-08-30 14:14:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509988964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:13,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:13,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:14:13,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293008608] [2023-08-30 14:14:13,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:13,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:14:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:14:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:14:13,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 395 [2023-08-30 14:14:13,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 495 flow. Second operand has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:13,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:13,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 395 [2023-08-30 14:14:13,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:31,664 INFO L130 PetriNetUnfolder]: 215709/312352 cut-off events. [2023-08-30 14:14:31,664 INFO L131 PetriNetUnfolder]: For 230196/230196 co-relation queries the response was YES. [2023-08-30 14:14:32,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817308 conditions, 312352 events. 215709/312352 cut-off events. For 230196/230196 co-relation queries the response was YES. Maximal size of possible extension queue 6897. Compared 2539569 event pairs, 38586 based on Foata normal form. 9975/311048 useless extension candidates. Maximal degree in co-relation 817177. Up to 197778 conditions per place. [2023-08-30 14:14:33,607 INFO L137 encePairwiseOnDemand]: 375/395 looper letters, 277 selfloop transitions, 35 changer transitions 0/322 dead transitions. [2023-08-30 14:14:33,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 322 transitions, 1855 flow [2023-08-30 14:14:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:14:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:14:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1579 transitions. [2023-08-30 14:14:33,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5710669077757685 [2023-08-30 14:14:33,610 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1579 transitions. [2023-08-30 14:14:33,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1579 transitions. [2023-08-30 14:14:33,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:33,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1579 transitions. [2023-08-30 14:14:33,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.57142857142858) internal successors, (1579), 7 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:33,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:33,616 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:33,616 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 495 flow. Second operand 7 states and 1579 transitions. [2023-08-30 14:14:33,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 322 transitions, 1855 flow [2023-08-30 14:14:34,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 322 transitions, 1849 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:14:34,458 INFO L231 Difference]: Finished difference. Result has 110 places, 135 transitions, 875 flow [2023-08-30 14:14:34,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=875, PETRI_PLACES=110, PETRI_TRANSITIONS=135} [2023-08-30 14:14:34,458 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 25 predicate places. [2023-08-30 14:14:34,458 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 135 transitions, 875 flow [2023-08-30 14:14:34,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:34,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:34,459 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:14:34,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:14:34,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:14:34,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:34,460 INFO L85 PathProgramCache]: Analyzing trace with hash 933211677, now seen corresponding path program 1 times [2023-08-30 14:14:34,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:34,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687406219] [2023-08-30 14:14:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:34,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:34,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:14:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:14:34,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:14:34,477 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:14:34,477 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:14:34,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:14:34,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:14:34,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:14:34,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:14:34,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:14:34,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:14:34,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:14:34,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:14:34,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:14:34,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:14:34,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:14:34,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:14:34,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:14:34,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:14:34,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:14:34,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:14:34,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:14:34,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:14:34,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:14:34,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:14:34,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:14:34,479 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:34,480 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:14:34,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:14:34,496 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:14:34,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 272 transitions, 588 flow [2023-08-30 14:14:34,546 INFO L130 PetriNetUnfolder]: 81/682 cut-off events. [2023-08-30 14:14:34,546 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:14:34,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 682 events. 81/682 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2768 event pairs, 6 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 465. Up to 32 conditions per place. [2023-08-30 14:14:34,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 272 transitions, 588 flow [2023-08-30 14:14:34,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 272 transitions, 588 flow [2023-08-30 14:14:34,553 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:14:34,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 272 transitions, 588 flow [2023-08-30 14:14:34,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 272 transitions, 588 flow [2023-08-30 14:14:34,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 272 transitions, 588 flow [2023-08-30 14:14:34,602 INFO L130 PetriNetUnfolder]: 81/682 cut-off events. [2023-08-30 14:14:34,602 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:14:34,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 682 events. 81/682 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2768 event pairs, 6 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 465. Up to 32 conditions per place. [2023-08-30 14:14:34,618 INFO L119 LiptonReduction]: Number of co-enabled transitions 43824 [2023-08-30 14:14:37,429 INFO L134 LiptonReduction]: Checked pairs total: 123324 [2023-08-30 14:14:37,429 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-08-30 14:14:37,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:14:37,433 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;@f7728b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:14:37,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:14:37,545 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 14:14:37,545 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:14:37,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:37,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:14:37,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:14:37,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1751416929, now seen corresponding path program 1 times [2023-08-30 14:14:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097858541] [2023-08-30 14:14:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:37,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:37,565 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 14:14:37,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097858541] [2023-08-30 14:14:37,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097858541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:37,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:37,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:14:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220246594] [2023-08-30 14:14:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:37,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:37,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:37,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:37,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:37,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 472 [2023-08-30 14:14:37,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 127 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:37,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:37,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 472 [2023-08-30 14:14:37,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand