./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.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_06-cond_racing1.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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --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 14:05:24,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:05:24,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:05:24,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:05:24,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:05:24,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:05:24,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:05:24,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:05:24,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:05:24,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:05:24,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:05:24,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:05:24,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:05:24,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:05:24,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:05:24,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:05:24,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:05:24,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:05:25,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:05:25,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:05:25,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:05:25,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:05:25,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:05:25,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:05:25,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:05:25,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:05:25,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:05:25,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:05:25,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:05:25,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:05:25,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:05:25,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:05:25,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:05:25,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:05:25,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:05:25,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:05:25,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:05:25,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:05:25,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:05:25,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:05:25,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:05:25,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:05:25,071 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:05:25,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:05:25,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:05:25,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:05:25,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:05:25,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:05:25,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:05:25,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:05:25,074 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:05:25,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:05:25,075 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:05:25,075 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:05:25,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:05:25,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:05:25,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:05:25,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:05:25,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:05:25,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:05:25,076 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:05:25,077 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:05:25,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:05:25,077 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:05:25,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:05:25,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:05:25,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:05:25,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:05:25,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:05:25,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:05:25,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:05:25,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:05:25,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:05:25,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:05:25,079 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:05:25,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:05:25,080 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:05:25,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:05:25,080 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:05:25,080 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:05:25,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:05:25,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:05:25,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:05:25,380 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:05:25,381 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:05:25,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-30 14:05:26,496 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:05:26,732 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:05:26,733 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-08-30 14:05:26,745 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a83686daf/e002e5af99ee48a886e9aa9b1d87b5c7/FLAGcf7ff6537 [2023-08-30 14:05:26,758 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a83686daf/e002e5af99ee48a886e9aa9b1d87b5c7 [2023-08-30 14:05:26,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:05:26,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:05:26,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:05:26,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:05:26,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:05:26,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:05:26" (1/1) ... [2023-08-30 14:05:26,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc76e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:26, skipping insertion in model container [2023-08-30 14:05:26,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:05:26" (1/1) ... [2023-08-30 14:05:26,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:05:26,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:05:27,188 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_06-cond_racing1.i[41322,41335] [2023-08-30 14:05:27,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:05:27,254 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:05:27,287 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_06-cond_racing1.i[41322,41335] [2023-08-30 14:05:27,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:05:27,346 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:05:27,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27 WrapperNode [2023-08-30 14:05:27,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:05:27,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:05:27,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:05:27,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:05:27,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,409 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-08-30 14:05:27,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:05:27,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:05:27,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:05:27,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:05:27,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,453 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:05:27,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:05:27,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:05:27,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:05:27,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (1/1) ... [2023-08-30 14:05:27,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:05:27,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:05:27,498 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 14:05:27,518 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 14:05:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:05:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:05:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:05:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:05:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:05:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:05:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:05:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:05:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:05:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:05:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:05:27,552 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 14:05:27,728 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:05:27,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:05:27,958 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:05:27,964 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:05:27,964 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:05:27,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:05:27 BoogieIcfgContainer [2023-08-30 14:05:27,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:05:27,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:05:27,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:05:27,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:05:27,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:05:26" (1/3) ... [2023-08-30 14:05:27,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22865ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:05:27, skipping insertion in model container [2023-08-30 14:05:27,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:05:27" (2/3) ... [2023-08-30 14:05:27,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22865ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:05:27, skipping insertion in model container [2023-08-30 14:05:27,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:05:27" (3/3) ... [2023-08-30 14:05:27,972 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-08-30 14:05:27,980 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:05:27,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:05:27,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:05:27,988 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:05:28,055 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:05:28,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 134 transitions, 276 flow [2023-08-30 14:05:28,146 INFO L130 PetriNetUnfolder]: 23/175 cut-off events. [2023-08-30 14:05:28,147 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:05:28,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 23/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 403 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 14:05:28,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 134 transitions, 276 flow [2023-08-30 14:05:28,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 131 transitions, 270 flow [2023-08-30 14:05:28,165 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:05:28,175 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 131 transitions, 270 flow [2023-08-30 14:05:28,182 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 131 transitions, 270 flow [2023-08-30 14:05:28,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 131 transitions, 270 flow [2023-08-30 14:05:28,211 INFO L130 PetriNetUnfolder]: 22/172 cut-off events. [2023-08-30 14:05:28,212 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:05:28,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 172 events. 22/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 401 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-30 14:05:28,215 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-08-30 14:05:31,637 INFO L134 LiptonReduction]: Checked pairs total: 5957 [2023-08-30 14:05:31,638 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-30 14:05:31,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:05:31,654 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;@5685fb34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:05:31,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:05:31,658 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-30 14:05:31,658 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:05:31,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:31,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:05:31,659 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 14:05:31,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash 16002939, now seen corresponding path program 1 times [2023-08-30 14:05:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:31,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519298649] [2023-08-30 14:05:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:31,920 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 14:05:31,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:31,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519298649] [2023-08-30 14:05:31,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519298649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:31,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:31,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:31,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181394572] [2023-08-30 14:05:31,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:31,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:31,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:31,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-30 14:05:31,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:31,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:31,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-30 14:05:31,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:32,113 INFO L130 PetriNetUnfolder]: 145/320 cut-off events. [2023-08-30 14:05:32,113 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:05:32,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 320 events. 145/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1629 event pairs, 0 based on Foata normal form. 25/244 useless extension candidates. Maximal degree in co-relation 601. Up to 292 conditions per place. [2023-08-30 14:05:32,117 INFO L137 encePairwiseOnDemand]: 240/255 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 14:05:32,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 180 flow [2023-08-30 14:05:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-08-30 14:05:32,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534640522875817 [2023-08-30 14:05:32,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-08-30 14:05:32,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-08-30 14:05:32,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:32,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-08-30 14:05:32,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:32,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:32,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:32,141 INFO L175 Difference]: Start difference. First operand has 35 places, 42 transitions, 92 flow. Second operand 3 states and 409 transitions. [2023-08-30 14:05:32,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 180 flow [2023-08-30 14:05:32,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:05:32,146 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 80 flow [2023-08-30 14:05:32,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-30 14:05:32,150 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-30 14:05:32,150 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 80 flow [2023-08-30 14:05:32,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:32,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:32,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:05:32,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:05:32,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:05:32,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1801032000, now seen corresponding path program 1 times [2023-08-30 14:05:32,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364636464] [2023-08-30 14:05:32,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:32,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:32,207 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 14:05:32,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:32,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364636464] [2023-08-30 14:05:32,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364636464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:32,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:32,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:32,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900172436] [2023-08-30 14:05:32,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:32,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:32,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:32,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:32,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 14:05:32,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:32,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:32,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 14:05:32,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:32,285 INFO L130 PetriNetUnfolder]: 118/256 cut-off events. [2023-08-30 14:05:32,285 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 14:05:32,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 256 events. 118/256 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 964 event pairs, 27 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 539. Up to 195 conditions per place. [2023-08-30 14:05:32,287 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 36 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 14:05:32,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 181 flow [2023-08-30 14:05:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-30 14:05:32,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124183006535947 [2023-08-30 14:05:32,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-30 14:05:32,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-30 14:05:32,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:32,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-30 14:05:32,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:32,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:32,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:32,294 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 80 flow. Second operand 3 states and 392 transitions. [2023-08-30 14:05:32,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 181 flow [2023-08-30 14:05:32,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:05:32,310 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 80 flow [2023-08-30 14:05:32,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 14:05:32,311 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-30 14:05:32,311 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 80 flow [2023-08-30 14:05:32,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:32,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:32,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:05:32,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:05:32,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:05:32,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1801011980, now seen corresponding path program 1 times [2023-08-30 14:05:32,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:32,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026495922] [2023-08-30 14:05:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:32,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:05:32,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:05:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:05:32,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:05:32,356 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:05:32,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:05:32,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:05:32,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:05:32,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:05:32,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:05:32,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:05:32,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:05:32,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:05:32,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:05:32,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:05:32,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:05:32,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:05:32,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:05:32,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:05:32,362 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 14:05:32,364 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:05:32,364 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:05:32,386 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:05:32,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 172 transitions, 362 flow [2023-08-30 14:05:32,416 INFO L130 PetriNetUnfolder]: 40/290 cut-off events. [2023-08-30 14:05:32,417 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:05:32,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 40/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 838 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 177. Up to 9 conditions per place. [2023-08-30 14:05:32,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 172 transitions, 362 flow [2023-08-30 14:05:32,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 172 transitions, 362 flow [2023-08-30 14:05:32,421 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:05:32,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 172 transitions, 362 flow [2023-08-30 14:05:32,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 172 transitions, 362 flow [2023-08-30 14:05:32,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 172 transitions, 362 flow [2023-08-30 14:05:32,447 INFO L130 PetriNetUnfolder]: 40/290 cut-off events. [2023-08-30 14:05:32,447 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:05:32,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 40/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 838 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 177. Up to 9 conditions per place. [2023-08-30 14:05:32,456 INFO L119 LiptonReduction]: Number of co-enabled transitions 11304 [2023-08-30 14:05:35,529 INFO L134 LiptonReduction]: Checked pairs total: 27313 [2023-08-30 14:05:35,530 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-30 14:05:35,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:05:35,533 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;@5685fb34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:05:35,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:05:35,536 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 14:05:35,536 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:05:35,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:35,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:05:35,536 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 14:05:35,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash 829116993, now seen corresponding path program 1 times [2023-08-30 14:05:35,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:35,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022528582] [2023-08-30 14:05:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:35,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:35,599 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 14:05:35,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:35,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022528582] [2023-08-30 14:05:35,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022528582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:35,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:35,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:35,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823781209] [2023-08-30 14:05:35,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:35,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:35,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 311 [2023-08-30 14:05:35,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:35,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:35,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 311 [2023-08-30 14:05:35,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:36,393 INFO L130 PetriNetUnfolder]: 6206/9937 cut-off events. [2023-08-30 14:05:36,396 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 14:05:36,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19729 conditions, 9937 events. 6206/9937 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 62854 event pairs, 2814 based on Foata normal form. 681/7350 useless extension candidates. Maximal degree in co-relation 2114. Up to 9663 conditions per place. [2023-08-30 14:05:36,462 INFO L137 encePairwiseOnDemand]: 290/311 looper letters, 64 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 14:05:36,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 292 flow [2023-08-30 14:05:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-08-30 14:05:36,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669882100750268 [2023-08-30 14:05:36,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-08-30 14:05:36,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-08-30 14:05:36,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:36,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-08-30 14:05:36,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:36,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:36,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:36,476 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 158 flow. Second operand 3 states and 529 transitions. [2023-08-30 14:05:36,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 292 flow [2023-08-30 14:05:36,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:05:36,480 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 146 flow [2023-08-30 14:05:36,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 14:05:36,483 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2023-08-30 14:05:36,483 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 146 flow [2023-08-30 14:05:36,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:36,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:36,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:05:36,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:05:36,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:05:36,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2075049628, now seen corresponding path program 1 times [2023-08-30 14:05:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:36,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774799562] [2023-08-30 14:05:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:36,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:36,567 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 14:05:36,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774799562] [2023-08-30 14:05:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774799562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:36,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:36,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:36,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483928602] [2023-08-30 14:05:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:36,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:36,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:36,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 311 [2023-08-30 14:05:36,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:36,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:36,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 311 [2023-08-30 14:05:36,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:37,257 INFO L130 PetriNetUnfolder]: 5596/8840 cut-off events. [2023-08-30 14:05:37,258 INFO L131 PetriNetUnfolder]: For 526/526 co-relation queries the response was YES. [2023-08-30 14:05:37,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18766 conditions, 8840 events. 5596/8840 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53694 event pairs, 2077 based on Foata normal form. 0/6289 useless extension candidates. Maximal degree in co-relation 18673. Up to 8160 conditions per place. [2023-08-30 14:05:37,304 INFO L137 encePairwiseOnDemand]: 303/311 looper letters, 71 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-30 14:05:37,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 358 flow [2023-08-30 14:05:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-30 14:05:37,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487674169346195 [2023-08-30 14:05:37,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-30 14:05:37,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-30 14:05:37,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:37,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-30 14:05:37,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:37,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:37,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:37,311 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 146 flow. Second operand 3 states and 512 transitions. [2023-08-30 14:05:37,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 358 flow [2023-08-30 14:05:37,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:05:37,316 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 171 flow [2023-08-30 14:05:37,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-30 14:05:37,318 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-08-30 14:05:37,318 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 171 flow [2023-08-30 14:05:37,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:37,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:37,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:05:37,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:05:37,320 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 14:05:37,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:37,320 INFO L85 PathProgramCache]: Analyzing trace with hash 244786434, now seen corresponding path program 1 times [2023-08-30 14:05:37,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:37,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085892123] [2023-08-30 14:05:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:37,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:37,389 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 14:05:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:37,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085892123] [2023-08-30 14:05:37,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085892123] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:05:37,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546379504] [2023-08-30 14:05:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:37,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:05:37,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:05:37,394 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 14:05:37,407 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 14:05:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:37,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:05:37,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:05:37,499 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 14:05:37,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:05:37,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546379504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:37,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:05:37,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:05:37,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956350539] [2023-08-30 14:05:37,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:37,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:05:37,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:37,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:05:37,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:05:37,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 311 [2023-08-30 14:05:37,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:37,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:37,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 311 [2023-08-30 14:05:37,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:38,192 INFO L130 PetriNetUnfolder]: 5216/8341 cut-off events. [2023-08-30 14:05:38,193 INFO L131 PetriNetUnfolder]: For 955/955 co-relation queries the response was YES. [2023-08-30 14:05:38,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18636 conditions, 8341 events. 5216/8341 cut-off events. For 955/955 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 50614 event pairs, 2592 based on Foata normal form. 0/6508 useless extension candidates. Maximal degree in co-relation 12081. Up to 8163 conditions per place. [2023-08-30 14:05:38,237 INFO L137 encePairwiseOnDemand]: 308/311 looper letters, 63 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 14:05:38,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 70 transitions, 326 flow [2023-08-30 14:05:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:05:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:05:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 648 transitions. [2023-08-30 14:05:38,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209003215434084 [2023-08-30 14:05:38,240 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 648 transitions. [2023-08-30 14:05:38,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 648 transitions. [2023-08-30 14:05:38,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:38,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 648 transitions. [2023-08-30 14:05:38,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:38,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:38,247 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:38,247 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 171 flow. Second operand 4 states and 648 transitions. [2023-08-30 14:05:38,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 70 transitions, 326 flow [2023-08-30 14:05:38,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:05:38,253 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 168 flow [2023-08-30 14:05:38,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-30 14:05:38,256 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2023-08-30 14:05:38,257 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 168 flow [2023-08-30 14:05:38,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:38,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:38,258 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:05:38,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:05:38,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 14:05:38,479 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 14:05:38,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash 244786471, now seen corresponding path program 1 times [2023-08-30 14:05:38,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:38,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361097712] [2023-08-30 14:05:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:38,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:38,524 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 14:05:38,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:38,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361097712] [2023-08-30 14:05:38,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361097712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:38,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:38,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:05:38,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475399407] [2023-08-30 14:05:38,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:38,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:38,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:38,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:38,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 311 [2023-08-30 14:05:38,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:38,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:38,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 311 [2023-08-30 14:05:38,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:39,127 INFO L130 PetriNetUnfolder]: 4836/7645 cut-off events. [2023-08-30 14:05:39,127 INFO L131 PetriNetUnfolder]: For 808/808 co-relation queries the response was YES. [2023-08-30 14:05:39,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16977 conditions, 7645 events. 4836/7645 cut-off events. For 808/808 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 47543 event pairs, 562 based on Foata normal form. 0/6132 useless extension candidates. Maximal degree in co-relation 16352. Up to 6576 conditions per place. [2023-08-30 14:05:39,156 INFO L137 encePairwiseOnDemand]: 307/311 looper letters, 78 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-08-30 14:05:39,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 406 flow [2023-08-30 14:05:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-08-30 14:05:39,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5498392282958199 [2023-08-30 14:05:39,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-08-30 14:05:39,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-08-30 14:05:39,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:39,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-08-30 14:05:39,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:39,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:39,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:39,163 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 168 flow. Second operand 3 states and 513 transitions. [2023-08-30 14:05:39,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 406 flow [2023-08-30 14:05:39,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:05:39,167 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 177 flow [2023-08-30 14:05:39,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-30 14:05:39,169 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2023-08-30 14:05:39,169 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 177 flow [2023-08-30 14:05:39,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:39,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:39,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:05:39,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:05:39,170 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 14:05:39,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1960192266, now seen corresponding path program 1 times [2023-08-30 14:05:39,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:39,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773048254] [2023-08-30 14:05:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:39,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:39,239 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 14:05:39,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:39,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773048254] [2023-08-30 14:05:39,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773048254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:39,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:39,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:05:39,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244955292] [2023-08-30 14:05:39,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:39,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:05:39,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:39,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:05:39,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:05:39,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 311 [2023-08-30 14:05:39,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:39,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:39,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 311 [2023-08-30 14:05:39,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:40,015 INFO L130 PetriNetUnfolder]: 6019/9614 cut-off events. [2023-08-30 14:05:40,015 INFO L131 PetriNetUnfolder]: For 2967/2967 co-relation queries the response was YES. [2023-08-30 14:05:40,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21998 conditions, 9614 events. 6019/9614 cut-off events. For 2967/2967 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 60177 event pairs, 929 based on Foata normal form. 0/7909 useless extension candidates. Maximal degree in co-relation 21893. Up to 5273 conditions per place. [2023-08-30 14:05:40,065 INFO L137 encePairwiseOnDemand]: 296/311 looper letters, 170 selfloop transitions, 19 changer transitions 0/194 dead transitions. [2023-08-30 14:05:40,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 194 transitions, 969 flow [2023-08-30 14:05:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:05:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:05:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1176 transitions. [2023-08-30 14:05:40,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5401929260450161 [2023-08-30 14:05:40,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1176 transitions. [2023-08-30 14:05:40,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1176 transitions. [2023-08-30 14:05:40,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:40,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1176 transitions. [2023-08-30 14:05:40,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:40,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:40,076 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:40,076 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 177 flow. Second operand 7 states and 1176 transitions. [2023-08-30 14:05:40,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 194 transitions, 969 flow [2023-08-30 14:05:40,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 194 transitions, 951 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:05:40,081 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 332 flow [2023-08-30 14:05:40,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-30 14:05:40,083 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2023-08-30 14:05:40,083 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 332 flow [2023-08-30 14:05:40,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:40,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:40,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:05:40,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:05:40,084 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 14:05:40,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1960192332, now seen corresponding path program 1 times [2023-08-30 14:05:40,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:40,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749625875] [2023-08-30 14:05:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:40,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:40,153 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 14:05:40,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:40,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749625875] [2023-08-30 14:05:40,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749625875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:40,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:40,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:05:40,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751047125] [2023-08-30 14:05:40,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:40,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:05:40,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:40,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:05:40,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:05:40,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 311 [2023-08-30 14:05:40,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:40,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:40,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 311 [2023-08-30 14:05:40,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:41,108 INFO L130 PetriNetUnfolder]: 5690/9254 cut-off events. [2023-08-30 14:05:41,108 INFO L131 PetriNetUnfolder]: For 6454/6454 co-relation queries the response was YES. [2023-08-30 14:05:41,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25270 conditions, 9254 events. 5690/9254 cut-off events. For 6454/6454 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 59017 event pairs, 864 based on Foata normal form. 315/8888 useless extension candidates. Maximal degree in co-relation 25159. Up to 5381 conditions per place. [2023-08-30 14:05:41,171 INFO L137 encePairwiseOnDemand]: 296/311 looper letters, 173 selfloop transitions, 24 changer transitions 0/202 dead transitions. [2023-08-30 14:05:41,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 202 transitions, 1152 flow [2023-08-30 14:05:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:05:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:05:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1173 transitions. [2023-08-30 14:05:41,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388148828663298 [2023-08-30 14:05:41,175 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1173 transitions. [2023-08-30 14:05:41,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1173 transitions. [2023-08-30 14:05:41,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:41,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1173 transitions. [2023-08-30 14:05:41,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.57142857142858) internal successors, (1173), 7 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:41,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:41,182 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 311.0) internal successors, (2488), 8 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:41,182 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 332 flow. Second operand 7 states and 1173 transitions. [2023-08-30 14:05:41,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 202 transitions, 1152 flow [2023-08-30 14:05:41,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 202 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:05:41,265 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 522 flow [2023-08-30 14:05:41,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2023-08-30 14:05:41,266 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2023-08-30 14:05:41,266 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 522 flow [2023-08-30 14:05:41,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:41,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:41,267 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:05:41,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:05:41,267 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 14:05:41,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:41,267 INFO L85 PathProgramCache]: Analyzing trace with hash -983375974, now seen corresponding path program 1 times [2023-08-30 14:05:41,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:41,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002064463] [2023-08-30 14:05:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:41,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:05:41,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:05:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:05:41,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:05:41,308 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:05:41,308 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:05:41,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:05:41,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:05:41,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:05:41,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:05:41,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:05:41,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:05:41,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:05:41,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:05:41,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:05:41,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:05:41,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:05:41,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:05:41,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:05:41,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:05:41,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:05:41,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:05:41,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:05:41,311 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:05:41,312 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:05:41,312 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:05:41,338 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:05:41,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 210 transitions, 450 flow [2023-08-30 14:05:41,387 INFO L130 PetriNetUnfolder]: 62/444 cut-off events. [2023-08-30 14:05:41,387 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:05:41,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 62/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1474 event pairs, 1 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-30 14:05:41,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 210 transitions, 450 flow [2023-08-30 14:05:41,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 210 transitions, 450 flow [2023-08-30 14:05:41,393 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:05:41,394 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 210 transitions, 450 flow [2023-08-30 14:05:41,394 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 210 transitions, 450 flow [2023-08-30 14:05:41,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 210 transitions, 450 flow [2023-08-30 14:05:41,435 INFO L130 PetriNetUnfolder]: 62/444 cut-off events. [2023-08-30 14:05:41,435 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:05:41,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 62/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1474 event pairs, 1 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-30 14:05:41,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 21168 [2023-08-30 14:05:44,888 INFO L134 LiptonReduction]: Checked pairs total: 60128 [2023-08-30 14:05:44,888 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-30 14:05:44,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:05:44,890 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;@5685fb34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:05:44,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:05:44,892 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 14:05:44,892 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:05:44,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:44,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:05:44,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:05:44,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1220892352, now seen corresponding path program 1 times [2023-08-30 14:05:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:44,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400642479] [2023-08-30 14:05:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:44,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:44,916 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 14:05:44,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:44,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400642479] [2023-08-30 14:05:44,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400642479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:44,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:44,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:44,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92083158] [2023-08-30 14:05:44,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:44,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:44,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:44,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:44,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 373 [2023-08-30 14:05:44,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:44,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:44,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 373 [2023-08-30 14:05:44,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:05:53,533 INFO L130 PetriNetUnfolder]: 117789/166262 cut-off events. [2023-08-30 14:05:53,534 INFO L131 PetriNetUnfolder]: For 2593/2593 co-relation queries the response was YES. [2023-08-30 14:05:53,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330064 conditions, 166262 events. 117789/166262 cut-off events. For 2593/2593 co-relation queries the response was YES. Maximal size of possible extension queue 5236. Compared 1264962 event pairs, 74471 based on Foata normal form. 18507/131631 useless extension candidates. Maximal degree in co-relation 21768. Up to 162055 conditions per place. [2023-08-30 14:05:54,403 INFO L137 encePairwiseOnDemand]: 346/373 looper letters, 77 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 14:05:54,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 364 flow [2023-08-30 14:05:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:05:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:05:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-30 14:05:54,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701519213583557 [2023-08-30 14:05:54,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-30 14:05:54,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-30 14:05:54,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:05:54,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-30 14:05:54,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:54,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:54,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:54,410 INFO L175 Difference]: Start difference. First operand has 75 places, 93 transitions, 216 flow. Second operand 3 states and 638 transitions. [2023-08-30 14:05:54,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 364 flow [2023-08-30 14:05:54,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:05:54,413 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 192 flow [2023-08-30 14:05:54,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-30 14:05:54,414 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2023-08-30 14:05:54,414 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 192 flow [2023-08-30 14:05:54,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:54,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:05:54,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:05:54,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:05:54,415 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 14:05:54,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:05:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash 760440145, now seen corresponding path program 1 times [2023-08-30 14:05:54,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:05:54,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978103100] [2023-08-30 14:05:54,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:05:54,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:05:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:05:54,446 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 14:05:54,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:05:54,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978103100] [2023-08-30 14:05:54,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978103100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:05:54,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:05:54,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:05:54,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173974646] [2023-08-30 14:05:54,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:05:54,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:05:54,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:05:54,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:05:54,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:05:54,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 373 [2023-08-30 14:05:54,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:05:54,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:05:54,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 373 [2023-08-30 14:05:54,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:02,326 INFO L130 PetriNetUnfolder]: 112479/156676 cut-off events. [2023-08-30 14:06:02,326 INFO L131 PetriNetUnfolder]: For 8096/8096 co-relation queries the response was YES. [2023-08-30 14:06:02,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327105 conditions, 156676 events. 112479/156676 cut-off events. For 8096/8096 co-relation queries the response was YES. Maximal size of possible extension queue 5159. Compared 1149549 event pairs, 55091 based on Foata normal form. 156/109971 useless extension candidates. Maximal degree in co-relation 327011. Up to 153030 conditions per place. [2023-08-30 14:06:02,973 INFO L137 encePairwiseOnDemand]: 362/373 looper letters, 86 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-30 14:06:02,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 449 flow [2023-08-30 14:06:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2023-08-30 14:06:02,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548704200178731 [2023-08-30 14:06:02,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2023-08-30 14:06:02,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2023-08-30 14:06:02,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:02,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2023-08-30 14:06:02,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:02,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:02,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:02,987 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 192 flow. Second operand 3 states and 614 transitions. [2023-08-30 14:06:02,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 449 flow [2023-08-30 14:06:02,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 99 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:02,996 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 228 flow [2023-08-30 14:06:02,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-08-30 14:06:02,997 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-08-30 14:06:02,997 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 228 flow [2023-08-30 14:06:02,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:02,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:02,998 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:06:02,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:06:02,998 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 14:06:02,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash 700337190, now seen corresponding path program 1 times [2023-08-30 14:06:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:02,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364627835] [2023-08-30 14:06:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:02,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:03,023 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 14:06:03,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:03,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364627835] [2023-08-30 14:06:03,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364627835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:03,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:03,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:06:03,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646025230] [2023-08-30 14:06:03,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:03,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:03,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:03,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:03,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:03,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 373 [2023-08-30 14:06:03,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:03,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:03,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 373 [2023-08-30 14:06:03,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:10,312 INFO L130 PetriNetUnfolder]: 104892/145871 cut-off events. [2023-08-30 14:06:10,313 INFO L131 PetriNetUnfolder]: For 16786/16815 co-relation queries the response was YES. [2023-08-30 14:06:10,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328551 conditions, 145871 events. 104892/145871 cut-off events. For 16786/16815 co-relation queries the response was YES. Maximal size of possible extension queue 4765. Compared 1110044 event pairs, 22268 based on Foata normal form. 1/111592 useless extension candidates. Maximal degree in co-relation 120829. Up to 115989 conditions per place. [2023-08-30 14:06:10,888 INFO L137 encePairwiseOnDemand]: 369/373 looper letters, 105 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2023-08-30 14:06:10,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 118 transitions, 555 flow [2023-08-30 14:06:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-08-30 14:06:10,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612153708668454 [2023-08-30 14:06:10,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-08-30 14:06:10,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-08-30 14:06:10,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:10,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-08-30 14:06:10,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:10,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:10,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:10,895 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 228 flow. Second operand 3 states and 628 transitions. [2023-08-30 14:06:10,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 118 transitions, 555 flow [2023-08-30 14:06:10,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 118 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:10,905 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 236 flow [2023-08-30 14:06:10,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-08-30 14:06:10,906 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-08-30 14:06:10,906 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 236 flow [2023-08-30 14:06:10,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:10,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:10,906 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:06:10,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:06:10,907 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 14:06:10,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:10,907 INFO L85 PathProgramCache]: Analyzing trace with hash 700337138, now seen corresponding path program 1 times [2023-08-30 14:06:10,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:10,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515237853] [2023-08-30 14:06:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:10,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:10,935 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 14:06:10,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:10,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515237853] [2023-08-30 14:06:10,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515237853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:10,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:10,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:06:10,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101783721] [2023-08-30 14:06:10,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:10,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:10,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:10,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:10,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:10,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 373 [2023-08-30 14:06:10,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:10,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:10,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 373 [2023-08-30 14:06:10,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:17,947 INFO L130 PetriNetUnfolder]: 97305/136669 cut-off events. [2023-08-30 14:06:17,947 INFO L131 PetriNetUnfolder]: For 41179/41372 co-relation queries the response was YES. [2023-08-30 14:06:18,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312509 conditions, 136669 events. 97305/136669 cut-off events. For 41179/41372 co-relation queries the response was YES. Maximal size of possible extension queue 4339. Compared 999162 event pairs, 91487 based on Foata normal form. 2793/109533 useless extension candidates. Maximal degree in co-relation 96661. Up to 134185 conditions per place. [2023-08-30 14:06:18,519 INFO L137 encePairwiseOnDemand]: 371/373 looper letters, 65 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-08-30 14:06:18,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 364 flow [2023-08-30 14:06:18,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-08-30 14:06:18,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272564789991063 [2023-08-30 14:06:18,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-08-30 14:06:18,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-08-30 14:06:18,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:18,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-08-30 14:06:18,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:18,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:18,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:18,526 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 236 flow. Second operand 3 states and 590 transitions. [2023-08-30 14:06:18,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 364 flow [2023-08-30 14:06:18,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:18,550 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 230 flow [2023-08-30 14:06:18,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-08-30 14:06:18,551 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-08-30 14:06:18,551 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 230 flow [2023-08-30 14:06:18,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:18,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:18,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:18,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:06:18,551 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 14:06:18,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:18,552 INFO L85 PathProgramCache]: Analyzing trace with hash -583156183, now seen corresponding path program 1 times [2023-08-30 14:06:18,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:18,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299720059] [2023-08-30 14:06:18,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:18,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:18,594 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 14:06:18,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:18,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299720059] [2023-08-30 14:06:18,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299720059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:18,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:18,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:06:18,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102264929] [2023-08-30 14:06:18,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:18,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:06:18,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:18,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:06:18,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:06:18,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 373 [2023-08-30 14:06:18,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:18,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:18,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 373 [2023-08-30 14:06:18,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:28,980 INFO L130 PetriNetUnfolder]: 140460/199333 cut-off events. [2023-08-30 14:06:28,981 INFO L131 PetriNetUnfolder]: For 44028/44128 co-relation queries the response was YES. [2023-08-30 14:06:29,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450217 conditions, 199333 events. 140460/199333 cut-off events. For 44028/44128 co-relation queries the response was YES. Maximal size of possible extension queue 6723. Compared 1551610 event pairs, 31241 based on Foata normal form. 91/161545 useless extension candidates. Maximal degree in co-relation 450202. Up to 114086 conditions per place. [2023-08-30 14:06:29,898 INFO L137 encePairwiseOnDemand]: 352/373 looper letters, 219 selfloop transitions, 30 changer transitions 0/258 dead transitions. [2023-08-30 14:06:29,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 258 transitions, 1282 flow [2023-08-30 14:06:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:06:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:06:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1436 transitions. [2023-08-30 14:06:29,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5499808502489467 [2023-08-30 14:06:29,902 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1436 transitions. [2023-08-30 14:06:29,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1436 transitions. [2023-08-30 14:06:29,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:29,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1436 transitions. [2023-08-30 14:06:29,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.14285714285714) internal successors, (1436), 7 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:29,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:29,909 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:29,909 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 230 flow. Second operand 7 states and 1436 transitions. [2023-08-30 14:06:29,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 258 transitions, 1282 flow [2023-08-30 14:06:29,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 258 transitions, 1281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:29,933 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 491 flow [2023-08-30 14:06:29,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=491, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2023-08-30 14:06:29,933 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 16 predicate places. [2023-08-30 14:06:29,933 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 491 flow [2023-08-30 14:06:29,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:29,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:29,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:29,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:06:29,934 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 14:06:29,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:29,935 INFO L85 PathProgramCache]: Analyzing trace with hash -583156106, now seen corresponding path program 1 times [2023-08-30 14:06:29,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:29,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950834148] [2023-08-30 14:06:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:29,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:29,979 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 14:06:29,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:29,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950834148] [2023-08-30 14:06:29,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950834148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:29,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:29,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:06:29,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900239657] [2023-08-30 14:06:29,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:29,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:06:29,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:29,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:06:29,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:06:30,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 373 [2023-08-30 14:06:30,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:30,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:30,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 373 [2023-08-30 14:06:30,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:43,223 INFO L130 PetriNetUnfolder]: 147683/214022 cut-off events. [2023-08-30 14:06:43,223 INFO L131 PetriNetUnfolder]: For 199894/200101 co-relation queries the response was YES. [2023-08-30 14:06:43,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605576 conditions, 214022 events. 147683/214022 cut-off events. For 199894/200101 co-relation queries the response was YES. Maximal size of possible extension queue 7404. Compared 1750187 event pairs, 29463 based on Foata normal form. 8157/209322 useless extension candidates. Maximal degree in co-relation 605555. Up to 132242 conditions per place. [2023-08-30 14:06:44,450 INFO L137 encePairwiseOnDemand]: 352/373 looper letters, 239 selfloop transitions, 42 changer transitions 0/290 dead transitions. [2023-08-30 14:06:44,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 290 transitions, 1803 flow [2023-08-30 14:06:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:06:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:06:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1436 transitions. [2023-08-30 14:06:44,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5499808502489467 [2023-08-30 14:06:44,454 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1436 transitions. [2023-08-30 14:06:44,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1436 transitions. [2023-08-30 14:06:44,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:44,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1436 transitions. [2023-08-30 14:06:44,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.14285714285714) internal successors, (1436), 7 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:44,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:44,461 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:44,461 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 491 flow. Second operand 7 states and 1436 transitions. [2023-08-30 14:06:44,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 290 transitions, 1803 flow [2023-08-30 14:06:45,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 290 transitions, 1797 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:45,341 INFO L231 Difference]: Finished difference. Result has 100 places, 134 transitions, 967 flow [2023-08-30 14:06:45,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=967, PETRI_PLACES=100, PETRI_TRANSITIONS=134} [2023-08-30 14:06:45,342 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 25 predicate places. [2023-08-30 14:06:45,342 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 134 transitions, 967 flow [2023-08-30 14:06:45,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:45,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:45,343 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:06:45,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:06:45,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:06:45,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:45,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1508946914, now seen corresponding path program 1 times [2023-08-30 14:06:45,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:45,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399274972] [2023-08-30 14:06:45,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:45,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:45,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:06:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:45,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:06:45,377 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:06:45,377 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:06:45,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:06:45,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:06:45,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:06:45,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:06:45,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:06:45,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:06:45,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:06:45,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:06:45,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:06:45,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:06:45,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:06:45,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:06:45,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:06:45,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:06:45,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:06:45,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:06:45,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:06:45,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:06:45,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:06:45,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:06:45,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:06:45,381 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:45,382 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:06:45,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:06:45,404 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:06:45,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 248 transitions, 540 flow [2023-08-30 14:06:45,472 INFO L130 PetriNetUnfolder]: 96/678 cut-off events. [2023-08-30 14:06:45,473 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:06:45,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 678 events. 96/678 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2599 event pairs, 6 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2023-08-30 14:06:45,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 248 transitions, 540 flow [2023-08-30 14:06:45,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 248 transitions, 540 flow [2023-08-30 14:06:45,483 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:06:45,483 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 248 transitions, 540 flow [2023-08-30 14:06:45,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 248 transitions, 540 flow [2023-08-30 14:06:45,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 248 transitions, 540 flow [2023-08-30 14:06:45,546 INFO L130 PetriNetUnfolder]: 96/678 cut-off events. [2023-08-30 14:06:45,547 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:06:45,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 678 events. 96/678 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2599 event pairs, 6 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2023-08-30 14:06:45,571 INFO L119 LiptonReduction]: Number of co-enabled transitions 33840 [2023-08-30 14:06:49,027 INFO L134 LiptonReduction]: Checked pairs total: 101454 [2023-08-30 14:06:49,027 INFO L136 LiptonReduction]: Total number of compositions: 193 [2023-08-30 14:06:49,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:06:49,030 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;@5685fb34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:06:49,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:06:49,032 INFO L130 PetriNetUnfolder]: 4/18 cut-off events. [2023-08-30 14:06:49,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:06:49,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:49,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:06:49,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:06:49,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:49,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1677703453, now seen corresponding path program 1 times [2023-08-30 14:06:49,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:49,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597489500] [2023-08-30 14:06:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:49,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:49,057 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 14:06:49,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:49,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597489500] [2023-08-30 14:06:49,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597489500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:49,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:49,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:49,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729691855] [2023-08-30 14:06:49,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:49,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:49,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:49,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:49,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:49,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 441 [2023-08-30 14:06:49,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 116 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:49,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:49,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 441 [2023-08-30 14:06:49,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand