./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_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_51-mutexptr_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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --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 14:16:27,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:16:27,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:16:28,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:16:28,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:16:28,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:16:28,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:16:28,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:16:28,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:16:28,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:16:28,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:16:28,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:16:28,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:16:28,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:16:28,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:16:28,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:16:28,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:16:28,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:16:28,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:16:28,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:16:28,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:16:28,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:16:28,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:16:28,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:16:28,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:16:28,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:16:28,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:16:28,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:16:28,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:16:28,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:16:28,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:16:28,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:16:28,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:16:28,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:16:28,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:16:28,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:16:28,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:16:28,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:16:28,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:16:28,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:16:28,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:16:28,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:16:28,115 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:16:28,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:16:28,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:16:28,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:16:28,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:16:28,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:16:28,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:16:28,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:16:28,118 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:16:28,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:16:28,119 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:16:28,119 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:16:28,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:16:28,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:16:28,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:16:28,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:16:28,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:16:28,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:16:28,120 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:16:28,120 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:16:28,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:16:28,121 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:16:28,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:16:28,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:16:28,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:16:28,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:16:28,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:16:28,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:16:28,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:16:28,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:16:28,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:16:28,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:16:28,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:16:28,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:16:28,123 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:16:28,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:16:28,123 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:16:28,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:16:28,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:16:28,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:16:28,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:16:28,365 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:16:28,365 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:16:28,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-30 14:16:29,387 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:16:29,593 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:16:29,595 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-30 14:16:29,605 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc2c5ab0/dc6c9f02da4146fe98dd980030dc1c28/FLAG6edd38fd2 [2023-08-30 14:16:29,616 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc2c5ab0/dc6c9f02da4146fe98dd980030dc1c28 [2023-08-30 14:16:29,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:16:29,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:16:29,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:16:29,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:16:29,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:16:29,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:29,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355e470d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29, skipping insertion in model container [2023-08-30 14:16:29,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:29,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:16:29,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:16:29,863 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_51-mutexptr_racefree.i[30176,30189] [2023-08-30 14:16:29,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:16:29,887 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:16:29,914 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_51-mutexptr_racefree.i[30176,30189] [2023-08-30 14:16:29,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:16:29,967 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:16:29,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29 WrapperNode [2023-08-30 14:16:29,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:16:29,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:16:29,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:16:29,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:16:29,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:29,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,004 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2023-08-30 14:16:30,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:16:30,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:16:30,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:16:30,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:16:30,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,043 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:16:30,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:16:30,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:16:30,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:16:30,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (1/1) ... [2023-08-30 14:16:30,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:16:30,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:16:30,084 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 14:16:30,098 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 14:16:30,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:16:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:16:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:16:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:16:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:16:30,139 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:16:30,140 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:16:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:16:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:16:30,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:16:30,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:16:30,141 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 14:16:30,301 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:16:30,302 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:16:30,563 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:16:30,568 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:16:30,570 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:16:30,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:16:30 BoogieIcfgContainer [2023-08-30 14:16:30,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:16:30,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:16:30,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:16:30,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:16:30,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:16:29" (1/3) ... [2023-08-30 14:16:30,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20332a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:16:30, skipping insertion in model container [2023-08-30 14:16:30,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:29" (2/3) ... [2023-08-30 14:16:30,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20332a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:16:30, skipping insertion in model container [2023-08-30 14:16:30,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:16:30" (3/3) ... [2023-08-30 14:16:30,579 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2023-08-30 14:16:30,589 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:16:30,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:16:30,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:16:30,595 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:16:30,642 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:16:30,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow [2023-08-30 14:16:30,740 INFO L130 PetriNetUnfolder]: 17/173 cut-off events. [2023-08-30 14:16:30,742 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:16:30,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 173 events. 17/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 402 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-08-30 14:16:30,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 138 transitions, 284 flow [2023-08-30 14:16:30,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 135 transitions, 278 flow [2023-08-30 14:16:30,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:16:30,777 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 135 transitions, 278 flow [2023-08-30 14:16:30,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 135 transitions, 278 flow [2023-08-30 14:16:30,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 135 transitions, 278 flow [2023-08-30 14:16:30,820 INFO L130 PetriNetUnfolder]: 16/170 cut-off events. [2023-08-30 14:16:30,820 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:16:30,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 170 events. 16/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 400 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-08-30 14:16:30,825 INFO L119 LiptonReduction]: Number of co-enabled transitions 3870 [2023-08-30 14:16:33,221 INFO L134 LiptonReduction]: Checked pairs total: 6689 [2023-08-30 14:16:33,221 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-30 14:16:33,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:16:33,234 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;@3af55541, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:16:33,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:16:33,237 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-08-30 14:16:33,237 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:33,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:33,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:16:33,252 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 14:16:33,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash 16081827, now seen corresponding path program 1 times [2023-08-30 14:16:33,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:33,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831782991] [2023-08-30 14:16:33,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:33,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:33,482 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 14:16:33,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:33,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831782991] [2023-08-30 14:16:33,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831782991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:33,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:33,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:16:33,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788511290] [2023-08-30 14:16:33,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:33,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:33,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:33,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:33,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 258 [2023-08-30 14:16:33,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:33,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:33,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 258 [2023-08-30 14:16:33,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:33,620 INFO L130 PetriNetUnfolder]: 104/248 cut-off events. [2023-08-30 14:16:33,620 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:16:33,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 248 events. 104/248 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 954 event pairs, 84 based on Foata normal form. 32/212 useless extension candidates. Maximal degree in co-relation 469. Up to 220 conditions per place. [2023-08-30 14:16:33,625 INFO L137 encePairwiseOnDemand]: 244/258 looper letters, 38 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 14:16:33,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 176 flow [2023-08-30 14:16:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-30 14:16:33,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5400516795865633 [2023-08-30 14:16:33,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-30 14:16:33,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-30 14:16:33,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:33,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-30 14:16:33,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:33,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:33,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:33,653 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 90 flow. Second operand 3 states and 418 transitions. [2023-08-30 14:16:33,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 176 flow [2023-08-30 14:16:33,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:16:33,657 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 76 flow [2023-08-30 14:16:33,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-30 14:16:33,660 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-30 14:16:33,660 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 76 flow [2023-08-30 14:16:33,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:33,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:33,661 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:16:33,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:16:33,662 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 14:16:33,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1725188457, now seen corresponding path program 1 times [2023-08-30 14:16:33,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:33,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949046416] [2023-08-30 14:16:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:33,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:16:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:33,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:16:33,750 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:16:33,751 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:16:33,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:16:33,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:16:33,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:16:33,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:16:33,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:16:33,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:16:33,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:16:33,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:16:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:16:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:16:33,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:16:33,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:16:33,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:16:33,762 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:16:33,764 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:16:33,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:16:33,789 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:16:33,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 183 transitions, 384 flow [2023-08-30 14:16:33,822 INFO L130 PetriNetUnfolder]: 31/289 cut-off events. [2023-08-30 14:16:33,823 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:16:33,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 289 events. 31/289 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 867 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-08-30 14:16:33,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 183 transitions, 384 flow [2023-08-30 14:16:33,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 183 transitions, 384 flow [2023-08-30 14:16:33,826 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:16:33,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 183 transitions, 384 flow [2023-08-30 14:16:33,826 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 183 transitions, 384 flow [2023-08-30 14:16:33,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 183 transitions, 384 flow [2023-08-30 14:16:33,844 INFO L130 PetriNetUnfolder]: 31/289 cut-off events. [2023-08-30 14:16:33,844 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:16:33,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 289 events. 31/289 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 867 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-08-30 14:16:33,851 INFO L119 LiptonReduction]: Number of co-enabled transitions 13072 [2023-08-30 14:16:36,617 INFO L134 LiptonReduction]: Checked pairs total: 28873 [2023-08-30 14:16:36,618 INFO L136 LiptonReduction]: Total number of compositions: 154 [2023-08-30 14:16:36,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:16:36,628 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;@3af55541, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:16:36,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:16:36,654 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2023-08-30 14:16:36,655 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:36,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:36,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:16:36,656 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 14:16:36,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:36,656 INFO L85 PathProgramCache]: Analyzing trace with hash 862917609, now seen corresponding path program 1 times [2023-08-30 14:16:36,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:36,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421037666] [2023-08-30 14:16:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:36,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:36,749 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 14:16:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421037666] [2023-08-30 14:16:36,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421037666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:36,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:36,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:16:36,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756120026] [2023-08-30 14:16:36,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:36,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:36,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:36,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:36,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 337 [2023-08-30 14:16:36,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:36,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:36,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 337 [2023-08-30 14:16:36,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:37,218 INFO L130 PetriNetUnfolder]: 4058/6814 cut-off events. [2023-08-30 14:16:37,219 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2023-08-30 14:16:37,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13394 conditions, 6814 events. 4058/6814 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 45524 event pairs, 1898 based on Foata normal form. 862/5444 useless extension candidates. Maximal degree in co-relation 1539. Up to 6459 conditions per place. [2023-08-30 14:16:37,248 INFO L137 encePairwiseOnDemand]: 317/337 looper letters, 57 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 14:16:37,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 270 flow [2023-08-30 14:16:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2023-08-30 14:16:37,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479723046488625 [2023-08-30 14:16:37,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2023-08-30 14:16:37,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2023-08-30 14:16:37,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:37,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2023-08-30 14:16:37,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,254 INFO L175 Difference]: Start difference. First operand has 55 places, 67 transitions, 152 flow. Second operand 3 states and 554 transitions. [2023-08-30 14:16:37,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 270 flow [2023-08-30 14:16:37,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:16:37,258 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2023-08-30 14:16:37,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 14:16:37,259 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-30 14:16:37,259 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2023-08-30 14:16:37,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:37,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:37,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:16:37,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:16:37,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash 345785249, now seen corresponding path program 1 times [2023-08-30 14:16:37,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:37,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610863880] [2023-08-30 14:16:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:37,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:16:37,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:37,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610863880] [2023-08-30 14:16:37,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610863880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:37,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:37,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:37,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178063362] [2023-08-30 14:16:37,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:37,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:16:37,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:37,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:16:37,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:16:37,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 337 [2023-08-30 14:16:37,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:37,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 337 [2023-08-30 14:16:37,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:37,935 INFO L130 PetriNetUnfolder]: 4478/7904 cut-off events. [2023-08-30 14:16:37,935 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2023-08-30 14:16:37,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16301 conditions, 7904 events. 4478/7904 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 57349 event pairs, 1421 based on Foata normal form. 0/5963 useless extension candidates. Maximal degree in co-relation 16213. Up to 5550 conditions per place. [2023-08-30 14:16:37,971 INFO L137 encePairwiseOnDemand]: 322/337 looper letters, 81 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2023-08-30 14:16:37,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 430 flow [2023-08-30 14:16:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:16:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:16:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 704 transitions. [2023-08-30 14:16:37,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222551928783383 [2023-08-30 14:16:37,974 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 704 transitions. [2023-08-30 14:16:37,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 704 transitions. [2023-08-30 14:16:37,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:37,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 704 transitions. [2023-08-30 14:16:37,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,978 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,979 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 4 states and 704 transitions. [2023-08-30 14:16:37,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 430 flow [2023-08-30 14:16:37,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:16:37,983 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 224 flow [2023-08-30 14:16:37,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-30 14:16:37,985 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2023-08-30 14:16:37,985 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 224 flow [2023-08-30 14:16:37,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:37,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:37,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:16:37,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:16:37,986 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 14:16:37,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash -13054434, now seen corresponding path program 1 times [2023-08-30 14:16:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541616852] [2023-08-30 14:16:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:37,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:38,078 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 14:16:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541616852] [2023-08-30 14:16:38,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541616852] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:16:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402154382] [2023-08-30 14:16:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:38,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:16:38,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:16:38,081 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 14:16:38,106 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 14:16:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:38,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:16:38,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:16:38,193 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 14:16:38,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:16:38,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402154382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:38,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:16:38,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:16:38,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002612651] [2023-08-30 14:16:38,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:16:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:16:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:16:38,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 337 [2023-08-30 14:16:38,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:38,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:38,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 337 [2023-08-30 14:16:38,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:38,731 INFO L130 PetriNetUnfolder]: 4150/7395 cut-off events. [2023-08-30 14:16:38,732 INFO L131 PetriNetUnfolder]: For 2414/2424 co-relation queries the response was YES. [2023-08-30 14:16:38,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18274 conditions, 7395 events. 4150/7395 cut-off events. For 2414/2424 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53416 event pairs, 2082 based on Foata normal form. 0/6607 useless extension candidates. Maximal degree in co-relation 8114. Up to 7018 conditions per place. [2023-08-30 14:16:38,757 INFO L137 encePairwiseOnDemand]: 334/337 looper letters, 62 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 14:16:38,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 382 flow [2023-08-30 14:16:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:16:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:16:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 685 transitions. [2023-08-30 14:16:38,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081602373887241 [2023-08-30 14:16:38,760 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 685 transitions. [2023-08-30 14:16:38,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 685 transitions. [2023-08-30 14:16:38,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:38,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 685 transitions. [2023-08-30 14:16:38,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:38,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:38,763 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:38,764 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 224 flow. Second operand 4 states and 685 transitions. [2023-08-30 14:16:38,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 382 flow [2023-08-30 14:16:38,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:16:38,770 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 224 flow [2023-08-30 14:16:38,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2023-08-30 14:16:38,772 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2023-08-30 14:16:38,772 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 224 flow [2023-08-30 14:16:38,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:38,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:38,773 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:16:38,793 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 14:16:38,978 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 14:16:38,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:16:38,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:38,978 INFO L85 PathProgramCache]: Analyzing trace with hash -13054435, now seen corresponding path program 1 times [2023-08-30 14:16:38,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:38,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425690055] [2023-08-30 14:16:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:39,002 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 14:16:39,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:39,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425690055] [2023-08-30 14:16:39,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425690055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:39,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:39,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:39,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401640669] [2023-08-30 14:16:39,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:39,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:39,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:39,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:39,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:39,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 337 [2023-08-30 14:16:39,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:39,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:39,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 337 [2023-08-30 14:16:39,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:39,427 INFO L130 PetriNetUnfolder]: 3822/6777 cut-off events. [2023-08-30 14:16:39,428 INFO L131 PetriNetUnfolder]: For 2346/2346 co-relation queries the response was YES. [2023-08-30 14:16:39,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16825 conditions, 6777 events. 3822/6777 cut-off events. For 2346/2346 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 47813 event pairs, 1749 based on Foata normal form. 0/6221 useless extension candidates. Maximal degree in co-relation 16206. Up to 5644 conditions per place. [2023-08-30 14:16:39,455 INFO L137 encePairwiseOnDemand]: 333/337 looper letters, 76 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-30 14:16:39,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 478 flow [2023-08-30 14:16:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-30 14:16:39,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321463897131553 [2023-08-30 14:16:39,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-30 14:16:39,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-30 14:16:39,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:39,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-30 14:16:39,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:39,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:39,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:39,460 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 224 flow. Second operand 3 states and 538 transitions. [2023-08-30 14:16:39,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 478 flow [2023-08-30 14:16:39,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:16:39,514 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 233 flow [2023-08-30 14:16:39,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2023-08-30 14:16:39,515 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2023-08-30 14:16:39,515 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 233 flow [2023-08-30 14:16:39,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:39,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:39,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:39,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:16:39,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:16:39,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash 556683600, now seen corresponding path program 1 times [2023-08-30 14:16:39,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:39,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449307258] [2023-08-30 14:16:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:39,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:39,599 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 14:16:39,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:39,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449307258] [2023-08-30 14:16:39,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449307258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:39,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:39,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952958027] [2023-08-30 14:16:39,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:39,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:39,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:39,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 337 [2023-08-30 14:16:39,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:39,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:39,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 337 [2023-08-30 14:16:39,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:40,149 INFO L130 PetriNetUnfolder]: 4438/8132 cut-off events. [2023-08-30 14:16:40,149 INFO L131 PetriNetUnfolder]: For 4310/4323 co-relation queries the response was YES. [2023-08-30 14:16:40,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20634 conditions, 8132 events. 4438/8132 cut-off events. For 4310/4323 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 60536 event pairs, 1625 based on Foata normal form. 6/7593 useless extension candidates. Maximal degree in co-relation 20529. Up to 4739 conditions per place. [2023-08-30 14:16:40,188 INFO L137 encePairwiseOnDemand]: 323/337 looper letters, 76 selfloop transitions, 18 changer transitions 0/102 dead transitions. [2023-08-30 14:16:40,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 102 transitions, 576 flow [2023-08-30 14:16:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-30 14:16:40,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380811078140455 [2023-08-30 14:16:40,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-30 14:16:40,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-30 14:16:40,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:40,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-30 14:16:40,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,194 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 233 flow. Second operand 3 states and 544 transitions. [2023-08-30 14:16:40,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 102 transitions, 576 flow [2023-08-30 14:16:40,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 569 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:16:40,200 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 397 flow [2023-08-30 14:16:40,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2023-08-30 14:16:40,200 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2023-08-30 14:16:40,200 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 397 flow [2023-08-30 14:16:40,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:40,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:40,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:16:40,201 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:16:40,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 556683580, now seen corresponding path program 1 times [2023-08-30 14:16:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:40,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481815787] [2023-08-30 14:16:40,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:40,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:40,302 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 14:16:40,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481815787] [2023-08-30 14:16:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481815787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:40,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:16:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973602652] [2023-08-30 14:16:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:40,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:16:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:16:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:16:40,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 337 [2023-08-30 14:16:40,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 397 flow. Second operand has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:40,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:40,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 337 [2023-08-30 14:16:40,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:41,097 INFO L130 PetriNetUnfolder]: 4987/9272 cut-off events. [2023-08-30 14:16:41,097 INFO L131 PetriNetUnfolder]: For 11278/11398 co-relation queries the response was YES. [2023-08-30 14:16:41,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26565 conditions, 9272 events. 4987/9272 cut-off events. For 11278/11398 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 71297 event pairs, 906 based on Foata normal form. 378/9473 useless extension candidates. Maximal degree in co-relation 26459. Up to 4695 conditions per place. [2023-08-30 14:16:41,147 INFO L137 encePairwiseOnDemand]: 319/337 looper letters, 191 selfloop transitions, 46 changer transitions 0/245 dead transitions. [2023-08-30 14:16:41,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 245 transitions, 1575 flow [2023-08-30 14:16:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:16:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:16:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1532 transitions. [2023-08-30 14:16:41,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051104516979887 [2023-08-30 14:16:41,151 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1532 transitions. [2023-08-30 14:16:41,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1532 transitions. [2023-08-30 14:16:41,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:41,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1532 transitions. [2023-08-30 14:16:41,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 170.22222222222223) internal successors, (1532), 9 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:41,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 337.0) internal successors, (3370), 10 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:41,158 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 337.0) internal successors, (3370), 10 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:41,158 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 397 flow. Second operand 9 states and 1532 transitions. [2023-08-30 14:16:41,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 245 transitions, 1575 flow [2023-08-30 14:16:41,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 245 transitions, 1491 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:16:41,176 INFO L231 Difference]: Finished difference. Result has 81 places, 108 transitions, 799 flow [2023-08-30 14:16:41,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=799, PETRI_PLACES=81, PETRI_TRANSITIONS=108} [2023-08-30 14:16:41,178 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2023-08-30 14:16:41,178 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 108 transitions, 799 flow [2023-08-30 14:16:41,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:41,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:41,178 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:16:41,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:16:41,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:16:41,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash 339638248, now seen corresponding path program 1 times [2023-08-30 14:16:41,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:41,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543287704] [2023-08-30 14:16:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:41,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:41,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:16:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:41,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:16:41,208 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:16:41,208 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:16:41,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:16:41,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:16:41,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:16:41,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:16:41,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:16:41,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:16:41,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:16:41,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:16:41,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:16:41,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:16:41,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:16:41,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:16:41,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:16:41,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:16:41,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:16:41,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:16:41,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:16:41,211 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:41,212 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:16:41,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:16:41,234 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:16:41,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 228 transitions, 486 flow [2023-08-30 14:16:41,283 INFO L130 PetriNetUnfolder]: 50/444 cut-off events. [2023-08-30 14:16:41,283 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:16:41,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 50/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1549 event pairs, 1 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 297. Up to 16 conditions per place. [2023-08-30 14:16:41,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 228 transitions, 486 flow [2023-08-30 14:16:41,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 228 transitions, 486 flow [2023-08-30 14:16:41,289 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:16:41,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 228 transitions, 486 flow [2023-08-30 14:16:41,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 228 transitions, 486 flow [2023-08-30 14:16:41,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 228 transitions, 486 flow [2023-08-30 14:16:41,323 INFO L130 PetriNetUnfolder]: 50/444 cut-off events. [2023-08-30 14:16:41,324 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:16:41,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 50/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1549 event pairs, 1 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 297. Up to 16 conditions per place. [2023-08-30 14:16:41,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 25542 [2023-08-30 14:16:44,441 INFO L134 LiptonReduction]: Checked pairs total: 60368 [2023-08-30 14:16:44,441 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-08-30 14:16:44,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:16:44,442 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;@3af55541, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:16:44,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:16:44,444 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2023-08-30 14:16:44,444 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:44,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:44,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:16:44,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:44,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:44,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1300163764, now seen corresponding path program 1 times [2023-08-30 14:16:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:44,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675561330] [2023-08-30 14:16:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:44,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:44,468 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 14:16:44,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:44,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675561330] [2023-08-30 14:16:44,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675561330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:44,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:44,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:16:44,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581888632] [2023-08-30 14:16:44,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:44,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:44,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:44,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 413 [2023-08-30 14:16:44,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:44,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:44,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 413 [2023-08-30 14:16:44,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:51,673 INFO L130 PetriNetUnfolder]: 104647/147266 cut-off events. [2023-08-30 14:16:51,673 INFO L131 PetriNetUnfolder]: For 2799/2799 co-relation queries the response was YES. [2023-08-30 14:16:51,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294328 conditions, 147266 events. 104647/147266 cut-off events. For 2799/2799 co-relation queries the response was YES. Maximal size of possible extension queue 4273. Compared 1080230 event pairs, 67893 based on Foata normal form. 14035/114245 useless extension candidates. Maximal degree in co-relation 20218. Up to 145193 conditions per place. [2023-08-30 14:16:52,432 INFO L137 encePairwiseOnDemand]: 387/413 looper letters, 75 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-30 14:16:52,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 354 flow [2023-08-30 14:16:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-08-30 14:16:52,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560936238902341 [2023-08-30 14:16:52,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-08-30 14:16:52,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-08-30 14:16:52,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:52,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-08-30 14:16:52,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:52,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:52,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:52,459 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 210 flow. Second operand 3 states and 689 transitions. [2023-08-30 14:16:52,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 354 flow [2023-08-30 14:16:52,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 85 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:16:52,461 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 184 flow [2023-08-30 14:16:52,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-08-30 14:16:52,464 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-30 14:16:52,464 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 184 flow [2023-08-30 14:16:52,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:52,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:52,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:52,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:16:52,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:52,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash -365491923, now seen corresponding path program 1 times [2023-08-30 14:16:52,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:52,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375161363] [2023-08-30 14:16:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:52,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:52,533 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 14:16:52,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:52,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375161363] [2023-08-30 14:16:52,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375161363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:52,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:52,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:52,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409355863] [2023-08-30 14:16:52,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:52,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:16:52,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:52,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:16:52,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:16:52,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 413 [2023-08-30 14:16:52,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:16:52,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:52,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 413 [2023-08-30 14:16:52,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:02,937 INFO L130 PetriNetUnfolder]: 126260/186229 cut-off events. [2023-08-30 14:17:02,938 INFO L131 PetriNetUnfolder]: For 9866/9866 co-relation queries the response was YES. [2023-08-30 14:17:03,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382888 conditions, 186229 events. 126260/186229 cut-off events. For 9866/9866 co-relation queries the response was YES. Maximal size of possible extension queue 5541. Compared 1532029 event pairs, 49378 based on Foata normal form. 0/140422 useless extension candidates. Maximal degree in co-relation 382794. Up to 139914 conditions per place. [2023-08-30 14:17:03,932 INFO L137 encePairwiseOnDemand]: 392/413 looper letters, 112 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2023-08-30 14:17:03,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 132 transitions, 588 flow [2023-08-30 14:17:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:17:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:17:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 884 transitions. [2023-08-30 14:17:03,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351089588377724 [2023-08-30 14:17:03,938 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 884 transitions. [2023-08-30 14:17:03,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 884 transitions. [2023-08-30 14:17:03,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:03,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 884 transitions. [2023-08-30 14:17:03,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:03,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 413.0) internal successors, (2065), 5 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:03,946 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 413.0) internal successors, (2065), 5 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:03,946 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 184 flow. Second operand 4 states and 884 transitions. [2023-08-30 14:17:03,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 132 transitions, 588 flow [2023-08-30 14:17:03,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 132 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:03,959 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 304 flow [2023-08-30 14:17:03,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2023-08-30 14:17:03,960 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2023-08-30 14:17:03,960 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 304 flow [2023-08-30 14:17:03,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:03,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:03,960 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:17:03,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:17:03,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:17:03,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:03,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1766754404, now seen corresponding path program 1 times [2023-08-30 14:17:03,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:03,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499254251] [2023-08-30 14:17:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:03,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:03,979 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 14:17:03,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:03,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499254251] [2023-08-30 14:17:03,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499254251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:03,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:03,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:03,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484195154] [2023-08-30 14:17:03,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:03,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:03,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:03,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:03,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:03,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 413 [2023-08-30 14:17:03,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:03,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:03,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 413 [2023-08-30 14:17:03,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:13,394 INFO L130 PetriNetUnfolder]: 117496/174195 cut-off events. [2023-08-30 14:17:13,394 INFO L131 PetriNetUnfolder]: For 55721/55726 co-relation queries the response was YES. [2023-08-30 14:17:13,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434735 conditions, 174195 events. 117496/174195 cut-off events. For 55721/55726 co-relation queries the response was YES. Maximal size of possible extension queue 5098. Compared 1441447 event pairs, 53354 based on Foata normal form. 1/154803 useless extension candidates. Maximal degree in co-relation 88744. Up to 136525 conditions per place. [2023-08-30 14:17:14,294 INFO L137 encePairwiseOnDemand]: 409/413 looper letters, 113 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2023-08-30 14:17:14,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 125 transitions, 684 flow [2023-08-30 14:17:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2023-08-30 14:17:14,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5504439063761097 [2023-08-30 14:17:14,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2023-08-30 14:17:14,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2023-08-30 14:17:14,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:14,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2023-08-30 14:17:14,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:14,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:14,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:14,301 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 304 flow. Second operand 3 states and 682 transitions. [2023-08-30 14:17:14,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 125 transitions, 684 flow [2023-08-30 14:17:14,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 684 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:17:14,334 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 316 flow [2023-08-30 14:17:14,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2023-08-30 14:17:14,334 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2023-08-30 14:17:14,334 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 316 flow [2023-08-30 14:17:14,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:14,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:14,335 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:17:14,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:17:14,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:17:14,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:14,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1766754405, now seen corresponding path program 1 times [2023-08-30 14:17:14,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:14,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170556899] [2023-08-30 14:17:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:14,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:14,361 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 14:17:14,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170556899] [2023-08-30 14:17:14,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170556899] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:17:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104564230] [2023-08-30 14:17:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:14,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:17:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:17:14,378 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 14:17:14,379 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 14:17:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:14,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:17:14,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:17:14,454 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 14:17:14,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:17:14,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104564230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:14,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:17:14,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:17:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055041879] [2023-08-30 14:17:14,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:14,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:17:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:17:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:17:14,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 413 [2023-08-30 14:17:14,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:14,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:14,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 413 [2023-08-30 14:17:14,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:24,441 INFO L130 PetriNetUnfolder]: 108732/161240 cut-off events. [2023-08-30 14:17:24,442 INFO L131 PetriNetUnfolder]: For 79168/79179 co-relation queries the response was YES. [2023-08-30 14:17:24,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411408 conditions, 161240 events. 108732/161240 cut-off events. For 79168/79179 co-relation queries the response was YES. Maximal size of possible extension queue 4639. Compared 1303027 event pairs, 75890 based on Foata normal form. 3210/149487 useless extension candidates. Maximal degree in co-relation 115574. Up to 157492 conditions per place. [2023-08-30 14:17:25,279 INFO L137 encePairwiseOnDemand]: 410/413 looper letters, 82 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-30 14:17:25,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 92 transitions, 514 flow [2023-08-30 14:17:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:17:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:17:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 850 transitions. [2023-08-30 14:17:25,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145278450363197 [2023-08-30 14:17:25,281 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 850 transitions. [2023-08-30 14:17:25,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 850 transitions. [2023-08-30 14:17:25,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:25,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 850 transitions. [2023-08-30 14:17:25,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.5) internal successors, (850), 4 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 413.0) internal successors, (2065), 5 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,285 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 413.0) internal successors, (2065), 5 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,286 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 316 flow. Second operand 4 states and 850 transitions. [2023-08-30 14:17:25,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 92 transitions, 514 flow [2023-08-30 14:17:25,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:17:25,324 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 312 flow [2023-08-30 14:17:25,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2023-08-30 14:17:25,325 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-08-30 14:17:25,325 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 312 flow [2023-08-30 14:17:25,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:25,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:25,333 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 14:17:25,530 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,SelfDestructingSolverStorable12 [2023-08-30 14:17:25,531 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 14:17:25,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1990278824, now seen corresponding path program 1 times [2023-08-30 14:17:25,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:25,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367188478] [2023-08-30 14:17:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:25,628 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 14:17:25,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367188478] [2023-08-30 14:17:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367188478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:25,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:25,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:17:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817842170] [2023-08-30 14:17:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:25,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:17:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:17:25,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:17:25,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 413 [2023-08-30 14:17:25,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 183.66666666666666) internal successors, (1102), 6 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:25,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:25,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 413 [2023-08-30 14:17:25,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:38,293 INFO L130 PetriNetUnfolder]: 142256/213109 cut-off events. [2023-08-30 14:17:38,294 INFO L131 PetriNetUnfolder]: For 91858/91877 co-relation queries the response was YES. [2023-08-30 14:17:38,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536892 conditions, 213109 events. 142256/213109 cut-off events. For 91858/91877 co-relation queries the response was YES. Maximal size of possible extension queue 6168. Compared 1819792 event pairs, 26459 based on Foata normal form. 1782/199783 useless extension candidates. Maximal degree in co-relation 536779. Up to 101623 conditions per place. [2023-08-30 14:17:39,588 INFO L137 encePairwiseOnDemand]: 390/413 looper letters, 248 selfloop transitions, 49 changer transitions 0/305 dead transitions. [2023-08-30 14:17:39,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 305 transitions, 1634 flow [2023-08-30 14:17:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:17:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:17:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1942 transitions. [2023-08-30 14:17:39,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224643529728276 [2023-08-30 14:17:39,593 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1942 transitions. [2023-08-30 14:17:39,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1942 transitions. [2023-08-30 14:17:39,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:39,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1942 transitions. [2023-08-30 14:17:39,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 215.77777777777777) internal successors, (1942), 9 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 413.0) internal successors, (4130), 10 states have internal predecessors, (4130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,600 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 413.0) internal successors, (4130), 10 states have internal predecessors, (4130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,601 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 312 flow. Second operand 9 states and 1942 transitions. [2023-08-30 14:17:39,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 305 transitions, 1634 flow [2023-08-30 14:17:39,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 305 transitions, 1628 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:17:39,682 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 708 flow [2023-08-30 14:17:39,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2023-08-30 14:17:39,682 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 21 predicate places. [2023-08-30 14:17:39,682 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 708 flow [2023-08-30 14:17:39,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.66666666666666) internal successors, (1102), 6 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:39,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:39,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:17:39,683 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 14:17:39,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1990278823, now seen corresponding path program 1 times [2023-08-30 14:17:39,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:39,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940889065] [2023-08-30 14:17:39,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:39,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:39,720 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 14:17:39,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:39,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940889065] [2023-08-30 14:17:39,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940889065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:39,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:39,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:17:39,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891413002] [2023-08-30 14:17:39,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:39,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:17:39,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:39,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:17:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:17:39,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 413 [2023-08-30 14:17:39,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 708 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:39,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:39,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 413 [2023-08-30 14:17:39,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:17:55,496 INFO L130 PetriNetUnfolder]: 153667/232970 cut-off events. [2023-08-30 14:17:55,496 INFO L131 PetriNetUnfolder]: For 383043/383231 co-relation queries the response was YES. [2023-08-30 14:17:56,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706670 conditions, 232970 events. 153667/232970 cut-off events. For 383043/383231 co-relation queries the response was YES. Maximal size of possible extension queue 6568. Compared 2059212 event pairs, 65652 based on Foata normal form. 9543/238581 useless extension candidates. Maximal degree in co-relation 706557. Up to 172677 conditions per place. [2023-08-30 14:17:57,086 INFO L137 encePairwiseOnDemand]: 395/413 looper letters, 151 selfloop transitions, 39 changer transitions 0/198 dead transitions. [2023-08-30 14:17:57,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 198 transitions, 1567 flow [2023-08-30 14:17:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:17:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:17:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-30 14:17:57,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512510088781275 [2023-08-30 14:17:57,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-30 14:17:57,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-30 14:17:57,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:17:57,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-30 14:17:57,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:57,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:57,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:57,114 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 708 flow. Second operand 3 states and 683 transitions. [2023-08-30 14:17:57,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 198 transitions, 1567 flow [2023-08-30 14:17:59,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 198 transitions, 1513 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 14:17:59,385 INFO L231 Difference]: Finished difference. Result has 96 places, 150 transitions, 1171 flow [2023-08-30 14:17:59,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1171, PETRI_PLACES=96, PETRI_TRANSITIONS=150} [2023-08-30 14:17:59,386 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 23 predicate places. [2023-08-30 14:17:59,386 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 150 transitions, 1171 flow [2023-08-30 14:17:59,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:59,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:17:59,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:17:59,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:17:59,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:17:59,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:17:59,387 INFO L85 PathProgramCache]: Analyzing trace with hash 594987583, now seen corresponding path program 1 times [2023-08-30 14:17:59,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:17:59,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917694067] [2023-08-30 14:17:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:17:59,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:17:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:17:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:17:59,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:17:59,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917694067] [2023-08-30 14:17:59,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917694067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:17:59,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:17:59,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:17:59,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955758655] [2023-08-30 14:17:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:17:59,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:17:59,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:17:59,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:17:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:17:59,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 413 [2023-08-30 14:17:59,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 150 transitions, 1171 flow. Second operand has 5 states, 5 states have (on average 188.4) internal successors, (942), 5 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:17:59,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:17:59,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 413 [2023-08-30 14:17:59,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:16,016 INFO L130 PetriNetUnfolder]: 143589/215834 cut-off events. [2023-08-30 14:18:16,017 INFO L131 PetriNetUnfolder]: For 505861/506043 co-relation queries the response was YES. [2023-08-30 14:18:16,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710928 conditions, 215834 events. 143589/215834 cut-off events. For 505861/506043 co-relation queries the response was YES. Maximal size of possible extension queue 5930. Compared 1854971 event pairs, 82226 based on Foata normal form. 1327/213376 useless extension candidates. Maximal degree in co-relation 710807. Up to 159508 conditions per place. [2023-08-30 14:18:17,464 INFO L137 encePairwiseOnDemand]: 398/413 looper letters, 255 selfloop transitions, 52 changer transitions 0/315 dead transitions. [2023-08-30 14:18:17,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 315 transitions, 2908 flow [2023-08-30 14:18:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:18:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:18:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1099 transitions. [2023-08-30 14:18:17,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322033898305085 [2023-08-30 14:18:17,481 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1099 transitions. [2023-08-30 14:18:17,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1099 transitions. [2023-08-30 14:18:17,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:17,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1099 transitions. [2023-08-30 14:18:17,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.8) internal successors, (1099), 5 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:17,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:17,492 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:17,492 INFO L175 Difference]: Start difference. First operand has 96 places, 150 transitions, 1171 flow. Second operand 5 states and 1099 transitions. [2023-08-30 14:18:17,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 315 transitions, 2908 flow [2023-08-30 14:18:19,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 315 transitions, 2752 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:18:19,803 INFO L231 Difference]: Finished difference. Result has 99 places, 187 transitions, 1640 flow [2023-08-30 14:18:19,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1640, PETRI_PLACES=99, PETRI_TRANSITIONS=187} [2023-08-30 14:18:19,804 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 26 predicate places. [2023-08-30 14:18:19,804 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 187 transitions, 1640 flow [2023-08-30 14:18:19,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.4) internal successors, (942), 5 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:19,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:19,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:18:19,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:18:19,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:18:19,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash 594987584, now seen corresponding path program 1 times [2023-08-30 14:18:19,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:19,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338310975] [2023-08-30 14:18:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:18:20,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:20,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338310975] [2023-08-30 14:18:20,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338310975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:18:20,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118772048] [2023-08-30 14:18:20,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:20,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:20,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:18:20,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:18:20,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:18:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:20,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 14:18:20,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:18:20,149 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:18:20,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:18:20,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:18:20,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 14:18:20,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:18:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:18:20,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:18:20,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118772048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:20,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:18:20,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 14:18:20,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796522467] [2023-08-30 14:18:20,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:20,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:18:20,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:18:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 14:18:20,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 413 [2023-08-30 14:18:20,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 187 transitions, 1640 flow. Second operand has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:20,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:20,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 413 [2023-08-30 14:18:20,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:18:36,440 INFO L130 PetriNetUnfolder]: 141067/212253 cut-off events. [2023-08-30 14:18:36,440 INFO L131 PetriNetUnfolder]: For 518831/518884 co-relation queries the response was YES. [2023-08-30 14:18:36,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716806 conditions, 212253 events. 141067/212253 cut-off events. For 518831/518884 co-relation queries the response was YES. Maximal size of possible extension queue 5868. Compared 1807320 event pairs, 56691 based on Foata normal form. 401/208937 useless extension candidates. Maximal degree in co-relation 716685. Up to 200145 conditions per place. [2023-08-30 14:18:37,712 INFO L137 encePairwiseOnDemand]: 402/413 looper letters, 229 selfloop transitions, 27 changer transitions 0/264 dead transitions. [2023-08-30 14:18:37,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 264 transitions, 2562 flow [2023-08-30 14:18:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:18:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:18:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1233 transitions. [2023-08-30 14:18:37,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975786924939467 [2023-08-30 14:18:37,714 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1233 transitions. [2023-08-30 14:18:37,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1233 transitions. [2023-08-30 14:18:37,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:18:37,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1233 transitions. [2023-08-30 14:18:37,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:37,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:37,719 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:37,719 INFO L175 Difference]: Start difference. First operand has 99 places, 187 transitions, 1640 flow. Second operand 6 states and 1233 transitions. [2023-08-30 14:18:37,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 264 transitions, 2562 flow [2023-08-30 14:18:41,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 264 transitions, 2550 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 14:18:41,658 INFO L231 Difference]: Finished difference. Result has 105 places, 200 transitions, 1843 flow [2023-08-30 14:18:41,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1843, PETRI_PLACES=105, PETRI_TRANSITIONS=200} [2023-08-30 14:18:41,659 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 32 predicate places. [2023-08-30 14:18:41,659 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 200 transitions, 1843 flow [2023-08-30 14:18:41,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:41,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:41,659 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:18:41,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:18:41,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:18:41,863 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:18:41,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash -661320879, now seen corresponding path program 1 times [2023-08-30 14:18:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:41,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826031529] [2023-08-30 14:18:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:18:41,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:18:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:18:41,897 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:18:41,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:18:41,898 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:18:41,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:18:41,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:18:41,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:18:41,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:18:41,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:18:41,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:18:41,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:18:41,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:18:41,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:18:41,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:18:41,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:18:41,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:18:41,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:18:41,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:18:41,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:18:41,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:18:41,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:18:41,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:18:41,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:18:41,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:18:41,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 14:18:41,901 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:18:41,902 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:18:41,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:18:41,924 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:18:41,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 273 transitions, 590 flow [2023-08-30 14:18:41,981 INFO L130 PetriNetUnfolder]: 81/679 cut-off events. [2023-08-30 14:18:41,981 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:18:41,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 679 events. 81/679 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2730 event pairs, 6 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2023-08-30 14:18:41,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 273 transitions, 590 flow [2023-08-30 14:18:41,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 273 transitions, 590 flow [2023-08-30 14:18:41,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:18:41,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 273 transitions, 590 flow [2023-08-30 14:18:41,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 273 transitions, 590 flow [2023-08-30 14:18:41,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 273 transitions, 590 flow [2023-08-30 14:18:42,042 INFO L130 PetriNetUnfolder]: 81/679 cut-off events. [2023-08-30 14:18:42,042 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:18:42,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 679 events. 81/679 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2730 event pairs, 6 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2023-08-30 14:18:42,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 41968 [2023-08-30 14:18:45,710 INFO L134 LiptonReduction]: Checked pairs total: 105318 [2023-08-30 14:18:45,711 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-08-30 14:18:45,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:18:45,712 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;@3af55541, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:18:45,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:18:45,713 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2023-08-30 14:18:45,713 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:18:45,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:18:45,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:18:45,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:18:45,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:18:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1812439553, now seen corresponding path program 1 times [2023-08-30 14:18:45,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:18:45,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792073390] [2023-08-30 14:18:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:18:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:18:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:18:45,731 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 14:18:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:18:45,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792073390] [2023-08-30 14:18:45,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792073390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:18:45,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:18:45,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:18:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453792562] [2023-08-30 14:18:45,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:18:45,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:18:45,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:18:45,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:18:45,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:18:45,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 492 [2023-08-30 14:18:45,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 113 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:18:45,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:18:45,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 492 [2023-08-30 14:18:45,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand