./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.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_07-cond_racing2.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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --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 14:05:58,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:05:58,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:05:58,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:05:58,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:05:58,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:05:58,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:05:58,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:05:58,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:05:58,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:05:58,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:05:58,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:05:58,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:05:58,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:05:58,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:05:58,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:05:58,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:05:58,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:05:58,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:05:58,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:05:58,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:05:58,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:05:58,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:05:58,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:05:58,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:05:58,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:05:58,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:05:58,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:05:58,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:05:58,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:05:58,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:05:58,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:05:58,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:05:58,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:05:58,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:05:58,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:05:58,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:05:58,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:05:58,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:05:58,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:05:58,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:05:58,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:05:58,954 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:05:58,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:05:58,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:05:58,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:05:58,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:05:58,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:05:58,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:05:58,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:05:58,957 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:05:58,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:05:58,958 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:05:58,958 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:05:58,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:05:58,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:05:58,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:05:58,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:05:58,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:05:58,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:05:58,959 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:05:58,959 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:05:58,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:05:58,959 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:05:58,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:05:58,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:05:58,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:05:58,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:05:58,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:05:58,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:05:58,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:05:58,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:05:58,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:05:58,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:05:58,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:05:58,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:05:58,961 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:05:58,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:05:58,962 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:05:58,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:05:59,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:05:59,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:05:59,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:05:59,196 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:05:59,196 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:05:59,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-30 14:06:00,122 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:06:00,303 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:06:00,304 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-30 14:06:00,314 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/052831e62/892fc3cf51b84562aaf5a92625660e8a/FLAGc0ea23fc8 [2023-08-30 14:06:00,323 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/052831e62/892fc3cf51b84562aaf5a92625660e8a [2023-08-30 14:06:00,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:06:00,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:06:00,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:06:00,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:06:00,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:06:00,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67726e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00, skipping insertion in model container [2023-08-30 14:06:00,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:06:00,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:06:00,660 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_07-cond_racing2.i[41322,41335] [2023-08-30 14:06:00,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:06:00,691 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:06:00,725 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_07-cond_racing2.i[41322,41335] [2023-08-30 14:06:00,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:06:00,788 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:06:00,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00 WrapperNode [2023-08-30 14:06:00,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:06:00,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:06:00,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:06:00,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:06:00,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,839 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-08-30 14:06:00,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:06:00,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:06:00,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:06:00,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:06:00,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,873 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:06:00,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:06:00,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:06:00,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:06:00,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (1/1) ... [2023-08-30 14:06:00,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:06:00,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:06:00,913 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 14:06:00,917 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 14:06:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:06:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:06:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:06:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:06:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:06:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:06:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:06:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:06:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:06:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:06:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:06:00,939 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 14:06:01,063 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:06:01,074 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:06:01,270 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:06:01,275 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:06:01,275 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:06:01,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:06:01 BoogieIcfgContainer [2023-08-30 14:06:01,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:06:01,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:06:01,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:06:01,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:06:01,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:06:00" (1/3) ... [2023-08-30 14:06:01,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b86ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:06:01, skipping insertion in model container [2023-08-30 14:06:01,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:06:00" (2/3) ... [2023-08-30 14:06:01,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b86ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:06:01, skipping insertion in model container [2023-08-30 14:06:01,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:06:01" (3/3) ... [2023-08-30 14:06:01,282 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-08-30 14:06:01,286 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:06:01,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:06:01,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 14:06:01,293 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:06:01,349 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:06:01,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 140 transitions, 288 flow [2023-08-30 14:06:01,411 INFO L130 PetriNetUnfolder]: 23/185 cut-off events. [2023-08-30 14:06:01,412 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:06:01,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 23/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 437 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-30 14:06:01,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 140 transitions, 288 flow [2023-08-30 14:06:01,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 137 transitions, 282 flow [2023-08-30 14:06:01,427 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:06:01,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 137 transitions, 282 flow [2023-08-30 14:06:01,440 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 137 transitions, 282 flow [2023-08-30 14:06:01,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 137 transitions, 282 flow [2023-08-30 14:06:01,474 INFO L130 PetriNetUnfolder]: 22/182 cut-off events. [2023-08-30 14:06:01,474 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:06:01,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 22/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 434 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2023-08-30 14:06:01,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 3960 [2023-08-30 14:06:04,325 INFO L134 LiptonReduction]: Checked pairs total: 6163 [2023-08-30 14:06:04,326 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-30 14:06:04,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:06:04,345 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;@48a42c3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:06:04,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-30 14:06:04,347 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 14:06:04,347 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:06:04,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:04,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:06:04,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-30 14:06:04,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash 17311, now seen corresponding path program 1 times [2023-08-30 14:06:04,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:04,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449545163] [2023-08-30 14:06:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:04,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:04,550 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 14:06:04,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:04,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449545163] [2023-08-30 14:06:04,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449545163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:04,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:04,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502082440] [2023-08-30 14:06:04,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:04,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:04,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:04,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 269 [2023-08-30 14:06:04,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:04,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:04,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 269 [2023-08-30 14:06:04,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:04,706 INFO L130 PetriNetUnfolder]: 157/334 cut-off events. [2023-08-30 14:06:04,706 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:06:04,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 334 events. 157/334 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1430 event pairs, 121 based on Foata normal form. 13/229 useless extension candidates. Maximal degree in co-relation 651. Up to 317 conditions per place. [2023-08-30 14:06:04,709 INFO L137 encePairwiseOnDemand]: 252/269 looper letters, 41 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-30 14:06:04,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 184 flow [2023-08-30 14:06:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:04,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-08-30 14:06:04,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328376703841388 [2023-08-30 14:06:04,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-08-30 14:06:04,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-08-30 14:06:04,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:04,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-08-30 14:06:04,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:04,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:04,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:04,729 INFO L175 Difference]: Start difference. First operand has 37 places, 44 transitions, 96 flow. Second operand 3 states and 430 transitions. [2023-08-30 14:06:04,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 184 flow [2023-08-30 14:06:04,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:06:04,757 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2023-08-30 14:06:04,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-08-30 14:06:04,774 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-30 14:06:04,775 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2023-08-30 14:06:04,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:04,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:04,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:06:04,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:06:04,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-30 14:06:04,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:04,776 INFO L85 PathProgramCache]: Analyzing trace with hash 514932147, now seen corresponding path program 1 times [2023-08-30 14:06:04,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:04,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120210529] [2023-08-30 14:06:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:04,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:06:04,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:04,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120210529] [2023-08-30 14:06:04,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120210529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:06:04,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733365678] [2023-08-30 14:06:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:04,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:06:04,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:06:04,859 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 14:06:04,869 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 14:06:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:04,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:06:04,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:06:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:06:04,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:06:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:06:05,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733365678] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:06:05,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:06:05,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:06:05,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848882351] [2023-08-30 14:06:05,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:06:05,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:06:05,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:06:05,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:06:05,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 269 [2023-08-30 14:06:05,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:05,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 269 [2023-08-30 14:06:05,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:05,086 INFO L130 PetriNetUnfolder]: 24/68 cut-off events. [2023-08-30 14:06:05,086 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 14:06:05,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 68 events. 24/68 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 162 event pairs, 11 based on Foata normal form. 13/69 useless extension candidates. Maximal degree in co-relation 151. Up to 50 conditions per place. [2023-08-30 14:06:05,087 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 27 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 14:06:05,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 131 flow [2023-08-30 14:06:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:06:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:06:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 517 transitions. [2023-08-30 14:06:05,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804832713754647 [2023-08-30 14:06:05,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 517 transitions. [2023-08-30 14:06:05,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 517 transitions. [2023-08-30 14:06:05,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:05,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 517 transitions. [2023-08-30 14:06:05,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,094 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,094 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 4 states and 517 transitions. [2023-08-30 14:06:05,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 131 flow [2023-08-30 14:06:05,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 125 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:06:05,095 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 45 flow [2023-08-30 14:06:05,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2023-08-30 14:06:05,096 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -13 predicate places. [2023-08-30 14:06:05,096 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 45 flow [2023-08-30 14:06:05,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:05,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:06:05,108 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 14:06:05,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:06:05,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-30 14:06:05,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1216992516, now seen corresponding path program 1 times [2023-08-30 14:06:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:05,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157612598] [2023-08-30 14:06:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:05,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:05,355 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 14:06:05,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:05,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157612598] [2023-08-30 14:06:05,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157612598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:05,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:05,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:05,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781419102] [2023-08-30 14:06:05,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:05,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:05,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:05,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:05,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:05,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 269 [2023-08-30 14:06:05,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:05,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 269 [2023-08-30 14:06:05,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:05,383 INFO L130 PetriNetUnfolder]: 20/59 cut-off events. [2023-08-30 14:06:05,384 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 14:06:05,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 59 events. 20/59 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 4 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 116. Up to 41 conditions per place. [2023-08-30 14:06:05,384 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-30 14:06:05,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 79 flow [2023-08-30 14:06:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-08-30 14:06:05,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4795539033457249 [2023-08-30 14:06:05,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-08-30 14:06:05,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-08-30 14:06:05,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:05,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-08-30 14:06:05,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,389 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 45 flow. Second operand 3 states and 387 transitions. [2023-08-30 14:06:05,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 79 flow [2023-08-30 14:06:05,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 75 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:06:05,389 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 42 flow [2023-08-30 14:06:05,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-30 14:06:05,390 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -15 predicate places. [2023-08-30 14:06:05,390 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 42 flow [2023-08-30 14:06:05,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:05,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:05,391 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:06:05,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:06:05,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-30 14:06:05,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1216973456, now seen corresponding path program 1 times [2023-08-30 14:06:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:05,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329606846] [2023-08-30 14:06:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:05,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:05,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:06:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:05,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:06:05,430 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:06:05,430 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-08-30 14:06:05,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-08-30 14:06:05,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-08-30 14:06:05,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-08-30 14:06:05,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-08-30 14:06:05,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-08-30 14:06:05,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-08-30 14:06:05,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-08-30 14:06:05,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-08-30 14:06:05,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-08-30 14:06:05,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-08-30 14:06:05,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-08-30 14:06:05,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-08-30 14:06:05,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-08-30 14:06:05,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-08-30 14:06:05,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:06:05,440 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 14:06:05,442 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:06:05,442 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:06:05,466 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:06:05,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 178 transitions, 374 flow [2023-08-30 14:06:05,493 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2023-08-30 14:06:05,494 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:06:05,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 906 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2023-08-30 14:06:05,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 178 transitions, 374 flow [2023-08-30 14:06:05,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 178 transitions, 374 flow [2023-08-30 14:06:05,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:06:05,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 178 transitions, 374 flow [2023-08-30 14:06:05,499 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 178 transitions, 374 flow [2023-08-30 14:06:05,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 178 transitions, 374 flow [2023-08-30 14:06:05,531 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2023-08-30 14:06:05,532 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:06:05,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 906 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2023-08-30 14:06:05,537 INFO L119 LiptonReduction]: Number of co-enabled transitions 11880 [2023-08-30 14:06:08,233 INFO L134 LiptonReduction]: Checked pairs total: 28015 [2023-08-30 14:06:08,234 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-30 14:06:08,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:06:08,241 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;@48a42c3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:06:08,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-30 14:06:08,242 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-30 14:06:08,243 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:06:08,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:08,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:06:08,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:06:08,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash 28927, now seen corresponding path program 1 times [2023-08-30 14:06:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:08,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391790897] [2023-08-30 14:06:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:08,268 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 14:06:08,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:08,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391790897] [2023-08-30 14:06:08,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391790897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:08,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:08,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:08,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286038536] [2023-08-30 14:06:08,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:08,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:08,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:08,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 14:06:08,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 72 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:08,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:08,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 14:06:08,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:08,872 INFO L130 PetriNetUnfolder]: 6640/10611 cut-off events. [2023-08-30 14:06:08,872 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 14:06:08,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21077 conditions, 10611 events. 6640/10611 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 67846 event pairs, 3024 based on Foata normal form. 472/7452 useless extension candidates. Maximal degree in co-relation 2262. Up to 10337 conditions per place. [2023-08-30 14:06:08,906 INFO L137 encePairwiseOnDemand]: 302/325 looper letters, 65 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 14:06:08,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 296 flow [2023-08-30 14:06:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:08,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-30 14:06:08,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2023-08-30 14:06:08,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-30 14:06:08,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-30 14:06:08,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:08,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-30 14:06:08,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:08,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:08,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:08,912 INFO L175 Difference]: Start difference. First operand has 59 places, 72 transitions, 162 flow. Second operand 3 states and 550 transitions. [2023-08-30 14:06:08,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 296 flow [2023-08-30 14:06:08,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:06:08,914 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 152 flow [2023-08-30 14:06:08,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 14:06:08,915 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2023-08-30 14:06:08,915 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 152 flow [2023-08-30 14:06:08,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:08,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:08,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:06:08,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:06:08,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:06:08,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:08,916 INFO L85 PathProgramCache]: Analyzing trace with hash 936566524, now seen corresponding path program 1 times [2023-08-30 14:06:08,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:08,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982192553] [2023-08-30 14:06:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:08,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:06:08,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982192553] [2023-08-30 14:06:08,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982192553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:06:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123086934] [2023-08-30 14:06:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:08,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:06:08,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:06:08,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:06:08,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:06:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:09,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:06:09,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:06:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:06:09,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:06:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:06:09,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123086934] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:06:09,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:06:09,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:06:09,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124353254] [2023-08-30 14:06:09,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:06:09,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:06:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:06:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:06:09,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 325 [2023-08-30 14:06:09,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:09,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 325 [2023-08-30 14:06:09,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:09,275 INFO L130 PetriNetUnfolder]: 1498/2702 cut-off events. [2023-08-30 14:06:09,275 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-08-30 14:06:09,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6131 conditions, 2702 events. 1498/2702 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 16213 event pairs, 0 based on Foata normal form. 240/2225 useless extension candidates. Maximal degree in co-relation 658. Up to 1290 conditions per place. [2023-08-30 14:06:09,286 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 103 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-08-30 14:06:09,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 111 transitions, 458 flow [2023-08-30 14:06:09,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:06:09,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:06:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1022 transitions. [2023-08-30 14:06:09,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241025641025641 [2023-08-30 14:06:09,288 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1022 transitions. [2023-08-30 14:06:09,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1022 transitions. [2023-08-30 14:06:09,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:09,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1022 transitions. [2023-08-30 14:06:09,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,294 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 152 flow. Second operand 6 states and 1022 transitions. [2023-08-30 14:06:09,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 111 transitions, 458 flow [2023-08-30 14:06:09,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 111 transitions, 454 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:09,297 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 104 flow [2023-08-30 14:06:09,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-30 14:06:09,298 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2023-08-30 14:06:09,298 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 104 flow [2023-08-30 14:06:09,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:09,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:09,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 14:06:09,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 14:06:09,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:06:09,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1023780600, now seen corresponding path program 1 times [2023-08-30 14:06:09,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:09,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255137423] [2023-08-30 14:06:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:09,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:09,528 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 14:06:09,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:09,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255137423] [2023-08-30 14:06:09,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255137423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:09,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:09,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047513383] [2023-08-30 14:06:09,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:09,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:09,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:09,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:09,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:09,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 325 [2023-08-30 14:06:09,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:09,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 325 [2023-08-30 14:06:09,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:09,668 INFO L130 PetriNetUnfolder]: 1352/2239 cut-off events. [2023-08-30 14:06:09,668 INFO L131 PetriNetUnfolder]: For 691/691 co-relation queries the response was YES. [2023-08-30 14:06:09,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5350 conditions, 2239 events. 1352/2239 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12239 event pairs, 506 based on Foata normal form. 0/1644 useless extension candidates. Maximal degree in co-relation 4441. Up to 2046 conditions per place. [2023-08-30 14:06:09,681 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 45 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-30 14:06:09,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 243 flow [2023-08-30 14:06:09,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-30 14:06:09,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158974358974359 [2023-08-30 14:06:09,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-30 14:06:09,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-30 14:06:09,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:09,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-30 14:06:09,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,686 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 104 flow. Second operand 3 states and 503 transitions. [2023-08-30 14:06:09,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 243 flow [2023-08-30 14:06:09,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 228 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 14:06:09,687 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 120 flow [2023-08-30 14:06:09,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-30 14:06:09,689 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2023-08-30 14:06:09,689 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 120 flow [2023-08-30 14:06:09,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:09,689 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:06:09,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:06:09,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:06:09,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:09,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1145494118, now seen corresponding path program 1 times [2023-08-30 14:06:09,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:09,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225635116] [2023-08-30 14:06:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:09,729 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 14:06:09,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:09,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225635116] [2023-08-30 14:06:09,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225635116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:09,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:09,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:06:09,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176262367] [2023-08-30 14:06:09,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:09,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:09,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:09,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:09,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:09,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 14:06:09,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:09,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 14:06:09,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:09,842 INFO L130 PetriNetUnfolder]: 972/1650 cut-off events. [2023-08-30 14:06:09,842 INFO L131 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2023-08-30 14:06:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 1650 events. 972/1650 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8317 event pairs, 945 based on Foata normal form. 0/1407 useless extension candidates. Maximal degree in co-relation 3082. Up to 1628 conditions per place. [2023-08-30 14:06:09,848 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 35 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 14:06:09,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 188 flow [2023-08-30 14:06:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 14:06:09,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2023-08-30 14:06:09,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 14:06:09,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 14:06:09,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:09,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 14:06:09,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,852 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 120 flow. Second operand 3 states and 490 transitions. [2023-08-30 14:06:09,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 188 flow [2023-08-30 14:06:09,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:09,854 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 115 flow [2023-08-30 14:06:09,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-30 14:06:09,854 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -10 predicate places. [2023-08-30 14:06:09,854 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 115 flow [2023-08-30 14:06:09,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:09,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:09,855 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:06:09,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:06:09,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 14:06:09,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:09,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1308286716, now seen corresponding path program 1 times [2023-08-30 14:06:09,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:09,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580501138] [2023-08-30 14:06:09,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:09,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:09,874 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:06:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:09,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:06:09,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:06:09,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-30 14:06:09,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-30 14:06:09,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-30 14:06:09,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-30 14:06:09,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-30 14:06:09,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-30 14:06:09,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-30 14:06:09,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-30 14:06:09,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-30 14:06:09,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-30 14:06:09,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-30 14:06:09,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-30 14:06:09,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-30 14:06:09,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-30 14:06:09,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-30 14:06:09,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-30 14:06:09,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-30 14:06:09,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-30 14:06:09,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-30 14:06:09,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:06:09,896 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 14:06:09,897 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:06:09,897 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:06:09,917 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:06:09,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 216 transitions, 462 flow [2023-08-30 14:06:09,954 INFO L130 PetriNetUnfolder]: 62/462 cut-off events. [2023-08-30 14:06:09,954 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:06:09,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 462 events. 62/462 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1579 event pairs, 1 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2023-08-30 14:06:09,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 216 transitions, 462 flow [2023-08-30 14:06:09,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 216 transitions, 462 flow [2023-08-30 14:06:09,958 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:06:09,958 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 216 transitions, 462 flow [2023-08-30 14:06:09,959 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 216 transitions, 462 flow [2023-08-30 14:06:09,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 216 transitions, 462 flow [2023-08-30 14:06:09,992 INFO L130 PetriNetUnfolder]: 62/462 cut-off events. [2023-08-30 14:06:09,992 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:06:09,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 462 events. 62/462 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1579 event pairs, 1 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2023-08-30 14:06:10,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 22032 [2023-08-30 14:06:12,716 INFO L134 LiptonReduction]: Checked pairs total: 54356 [2023-08-30 14:06:12,716 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-30 14:06:12,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:06:12,717 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;@48a42c3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:06:12,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 14:06:12,718 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-30 14:06:12,718 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:06:12,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:12,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:06:12,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:06:12,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash 42558, now seen corresponding path program 1 times [2023-08-30 14:06:12,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:12,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420527833] [2023-08-30 14:06:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:12,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:12,754 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 14:06:12,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420527833] [2023-08-30 14:06:12,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420527833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:12,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:12,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:12,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487558551] [2023-08-30 14:06:12,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:12,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:12,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:12,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:12,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 388 [2023-08-30 14:06:12,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:12,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:12,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 388 [2023-08-30 14:06:12,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:20,231 INFO L130 PetriNetUnfolder]: 117819/165593 cut-off events. [2023-08-30 14:06:20,231 INFO L131 PetriNetUnfolder]: For 2489/2489 co-relation queries the response was YES. [2023-08-30 14:06:20,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329371 conditions, 165593 events. 117819/165593 cut-off events. For 2489/2489 co-relation queries the response was YES. Maximal size of possible extension queue 5143. Compared 1251890 event pairs, 114637 based on Foata normal form. 15615/127957 useless extension candidates. Maximal degree in co-relation 99492. Up to 162137 conditions per place. [2023-08-30 14:06:20,915 INFO L137 encePairwiseOnDemand]: 366/388 looper letters, 62 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-30 14:06:20,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 300 flow [2023-08-30 14:06:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:20,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-30 14:06:20,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335051546391752 [2023-08-30 14:06:20,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-30 14:06:20,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-30 14:06:20,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:20,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-30 14:06:20,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:20,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:20,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:20,922 INFO L175 Difference]: Start difference. First operand has 76 places, 93 transitions, 216 flow. Second operand 3 states and 621 transitions. [2023-08-30 14:06:20,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 300 flow [2023-08-30 14:06:20,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:06:20,926 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 176 flow [2023-08-30 14:06:20,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, 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=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-30 14:06:20,928 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2023-08-30 14:06:20,928 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 176 flow [2023-08-30 14:06:20,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:20,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:20,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:06:20,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:06:20,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:06:20,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:20,929 INFO L85 PathProgramCache]: Analyzing trace with hash 42560, now seen corresponding path program 1 times [2023-08-30 14:06:20,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:20,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971692935] [2023-08-30 14:06:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:20,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:20,943 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 14:06:20,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971692935] [2023-08-30 14:06:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971692935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:20,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:20,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:20,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294692714] [2023-08-30 14:06:20,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:20,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:20,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:20,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 388 [2023-08-30 14:06:20,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:20,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:20,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 388 [2023-08-30 14:06:20,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:28,121 INFO L130 PetriNetUnfolder]: 117789/166369 cut-off events. [2023-08-30 14:06:28,121 INFO L131 PetriNetUnfolder]: For 2603/2603 co-relation queries the response was YES. [2023-08-30 14:06:28,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330173 conditions, 166369 events. 117789/166369 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 5213. Compared 1267461 event pairs, 74471 based on Foata normal form. 0/113290 useless extension candidates. Maximal degree in co-relation 330164. Up to 162055 conditions per place. [2023-08-30 14:06:28,713 INFO L137 encePairwiseOnDemand]: 381/388 looper letters, 77 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 14:06:28,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 88 transitions, 366 flow [2023-08-30 14:06:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2023-08-30 14:06:28,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412371134020618 [2023-08-30 14:06:28,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2023-08-30 14:06:28,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2023-08-30 14:06:28,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:28,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2023-08-30 14:06:28,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:28,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:28,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:28,719 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 176 flow. Second operand 3 states and 630 transitions. [2023-08-30 14:06:28,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 88 transitions, 366 flow [2023-08-30 14:06:28,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:28,722 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 195 flow [2023-08-30 14:06:28,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=195, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-08-30 14:06:28,723 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-30 14:06:28,723 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 195 flow [2023-08-30 14:06:28,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:28,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:28,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:06:28,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:06:28,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:06:28,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash 635805001, now seen corresponding path program 1 times [2023-08-30 14:06:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:28,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495541413] [2023-08-30 14:06:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:06:28,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:28,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495541413] [2023-08-30 14:06:28,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495541413] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:06:28,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899819844] [2023-08-30 14:06:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:28,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:06:28,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:06:28,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:06:28,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:06:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:28,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:06:28,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:06:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:06:28,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:06:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:06:28,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899819844] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:06:28,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:06:28,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:06:28,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138700050] [2023-08-30 14:06:28,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:06:28,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:06:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:06:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:06:28,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 388 [2023-08-30 14:06:28,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:28,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:28,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 388 [2023-08-30 14:06:28,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:30,979 INFO L130 PetriNetUnfolder]: 29173/44042 cut-off events. [2023-08-30 14:06:30,980 INFO L131 PetriNetUnfolder]: For 12255/12255 co-relation queries the response was YES. [2023-08-30 14:06:31,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99868 conditions, 44042 events. 29173/44042 cut-off events. For 12255/12255 co-relation queries the response was YES. Maximal size of possible extension queue 1711. Compared 333948 event pairs, 2475 based on Foata normal form. 2940/34969 useless extension candidates. Maximal degree in co-relation 99857. Up to 20666 conditions per place. [2023-08-30 14:06:31,130 INFO L137 encePairwiseOnDemand]: 381/388 looper letters, 164 selfloop transitions, 6 changer transitions 0/178 dead transitions. [2023-08-30 14:06:31,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 178 transitions, 732 flow [2023-08-30 14:06:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:06:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:06:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1448 transitions. [2023-08-30 14:06:31,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331369661266568 [2023-08-30 14:06:31,135 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1448 transitions. [2023-08-30 14:06:31,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1448 transitions. [2023-08-30 14:06:31,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:31,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1448 transitions. [2023-08-30 14:06:31,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.85714285714286) internal successors, (1448), 7 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:31,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 388.0) internal successors, (3104), 8 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:31,141 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 388.0) internal successors, (3104), 8 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:31,141 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 195 flow. Second operand 7 states and 1448 transitions. [2023-08-30 14:06:31,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 178 transitions, 732 flow [2023-08-30 14:06:31,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 178 transitions, 724 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:31,163 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 154 flow [2023-08-30 14:06:31,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2023-08-30 14:06:31,164 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2023-08-30 14:06:31,164 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 154 flow [2023-08-30 14:06:31,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:31,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:31,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:31,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 14:06:31,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:06:31,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:06:31,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:31,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1756102051, now seen corresponding path program 1 times [2023-08-30 14:06:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:31,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838191347] [2023-08-30 14:06:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:31,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:31,401 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 14:06:31,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:31,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838191347] [2023-08-30 14:06:31,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838191347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:31,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:31,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:31,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565292791] [2023-08-30 14:06:31,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:31,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:31,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:31,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:31,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:31,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 388 [2023-08-30 14:06:31,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:31,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:31,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 388 [2023-08-30 14:06:31,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:33,013 INFO L130 PetriNetUnfolder]: 27769/39349 cut-off events. [2023-08-30 14:06:33,014 INFO L131 PetriNetUnfolder]: For 8980/8980 co-relation queries the response was YES. [2023-08-30 14:06:33,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90123 conditions, 39349 events. 27769/39349 cut-off events. For 8980/8980 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 266264 event pairs, 13654 based on Foata normal form. 48/28168 useless extension candidates. Maximal degree in co-relation 90111. Up to 38435 conditions per place. [2023-08-30 14:06:33,150 INFO L137 encePairwiseOnDemand]: 378/388 looper letters, 63 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-08-30 14:06:33,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 354 flow [2023-08-30 14:06:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:33,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-30 14:06:33,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189003436426117 [2023-08-30 14:06:33,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-30 14:06:33,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-30 14:06:33,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:33,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-30 14:06:33,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:33,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:33,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:33,155 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 154 flow. Second operand 3 states and 604 transitions. [2023-08-30 14:06:33,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 354 flow [2023-08-30 14:06:33,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 331 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 14:06:33,163 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 177 flow [2023-08-30 14:06:33,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-30 14:06:33,164 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2023-08-30 14:06:33,164 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 177 flow [2023-08-30 14:06:33,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:33,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:33,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:06:33,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:06:33,164 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:06:33,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash 460541166, now seen corresponding path program 1 times [2023-08-30 14:06:33,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:33,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526613620] [2023-08-30 14:06:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:33,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:33,183 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 14:06:33,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:33,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526613620] [2023-08-30 14:06:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526613620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:33,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:33,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:06:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119271813] [2023-08-30 14:06:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:33,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:33,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:33,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 388 [2023-08-30 14:06:33,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:33,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:33,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 388 [2023-08-30 14:06:33,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:34,826 INFO L130 PetriNetUnfolder]: 20182/29149 cut-off events. [2023-08-30 14:06:34,826 INFO L131 PetriNetUnfolder]: For 5990/6018 co-relation queries the response was YES. [2023-08-30 14:06:34,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66083 conditions, 29149 events. 20182/29149 cut-off events. For 5990/6018 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 195155 event pairs, 19525 based on Foata normal form. 0/23838 useless extension candidates. Maximal degree in co-relation 66071. Up to 28602 conditions per place. [2023-08-30 14:06:34,909 INFO L137 encePairwiseOnDemand]: 386/388 looper letters, 49 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 14:06:34,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 269 flow [2023-08-30 14:06:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:06:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:06:34,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-30 14:06:34,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085910652920962 [2023-08-30 14:06:34,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-30 14:06:34,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-30 14:06:34,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:34,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-30 14:06:34,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:34,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:34,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 388.0) internal successors, (1552), 4 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:34,914 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 177 flow. Second operand 3 states and 592 transitions. [2023-08-30 14:06:34,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 269 flow [2023-08-30 14:06:34,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:34,918 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 167 flow [2023-08-30 14:06:34,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-08-30 14:06:34,919 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -7 predicate places. [2023-08-30 14:06:34,919 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 167 flow [2023-08-30 14:06:34,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:34,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:34,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:34,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:06:34,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:06:34,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash -318935097, now seen corresponding path program 1 times [2023-08-30 14:06:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:34,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107809970] [2023-08-30 14:06:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:34,952 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 14:06:34,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107809970] [2023-08-30 14:06:34,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107809970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:34,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:34,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:06:34,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141797010] [2023-08-30 14:06:34,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:34,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:06:34,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:34,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:06:34,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:06:34,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 388 [2023-08-30 14:06:34,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:34,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:34,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 388 [2023-08-30 14:06:34,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:36,947 INFO L130 PetriNetUnfolder]: 28862/42209 cut-off events. [2023-08-30 14:06:36,947 INFO L131 PetriNetUnfolder]: For 8677/8706 co-relation queries the response was YES. [2023-08-30 14:06:36,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95065 conditions, 42209 events. 28862/42209 cut-off events. For 8677/8706 co-relation queries the response was YES. Maximal size of possible extension queue 1823. Compared 303647 event pairs, 6628 based on Foata normal form. 27/36009 useless extension candidates. Maximal degree in co-relation 95052. Up to 23949 conditions per place. [2023-08-30 14:06:37,090 INFO L137 encePairwiseOnDemand]: 367/388 looper letters, 144 selfloop transitions, 30 changer transitions 0/182 dead transitions. [2023-08-30 14:06:37,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 182 transitions, 876 flow [2023-08-30 14:06:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:06:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:06:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1398 transitions. [2023-08-30 14:06:37,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147275405007363 [2023-08-30 14:06:37,093 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1398 transitions. [2023-08-30 14:06:37,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1398 transitions. [2023-08-30 14:06:37,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:37,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1398 transitions. [2023-08-30 14:06:37,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.71428571428572) internal successors, (1398), 7 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:37,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 388.0) internal successors, (3104), 8 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:37,099 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 388.0) internal successors, (3104), 8 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:37,099 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 167 flow. Second operand 7 states and 1398 transitions. [2023-08-30 14:06:37,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 182 transitions, 876 flow [2023-08-30 14:06:37,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 182 transitions, 875 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:37,104 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 428 flow [2023-08-30 14:06:37,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-08-30 14:06:37,105 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-30 14:06:37,105 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 428 flow [2023-08-30 14:06:37,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:37,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:37,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:37,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:06:37,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:06:37,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash -318935003, now seen corresponding path program 1 times [2023-08-30 14:06:37,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:37,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887593136] [2023-08-30 14:06:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:37,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:37,137 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 14:06:37,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:37,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887593136] [2023-08-30 14:06:37,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887593136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:37,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:37,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:06:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615303801] [2023-08-30 14:06:37,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:37,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:06:37,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:06:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:06:37,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 388 [2023-08-30 14:06:37,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:37,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:37,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 388 [2023-08-30 14:06:37,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:06:39,754 INFO L130 PetriNetUnfolder]: 29978/44918 cut-off events. [2023-08-30 14:06:39,754 INFO L131 PetriNetUnfolder]: For 43102/43163 co-relation queries the response was YES. [2023-08-30 14:06:39,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129611 conditions, 44918 events. 29978/44918 cut-off events. For 43102/43163 co-relation queries the response was YES. Maximal size of possible extension queue 1990. Compared 341286 event pairs, 6055 based on Foata normal form. 1965/46878 useless extension candidates. Maximal degree in co-relation 129592. Up to 27612 conditions per place. [2023-08-30 14:06:39,976 INFO L137 encePairwiseOnDemand]: 367/388 looper letters, 164 selfloop transitions, 42 changer transitions 0/214 dead transitions. [2023-08-30 14:06:39,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 214 transitions, 1397 flow [2023-08-30 14:06:39,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:06:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:06:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1398 transitions. [2023-08-30 14:06:39,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147275405007363 [2023-08-30 14:06:39,979 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1398 transitions. [2023-08-30 14:06:39,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1398 transitions. [2023-08-30 14:06:39,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:06:39,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1398 transitions. [2023-08-30 14:06:39,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.71428571428572) internal successors, (1398), 7 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:39,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 388.0) internal successors, (3104), 8 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:39,986 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 388.0) internal successors, (3104), 8 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:39,986 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 428 flow. Second operand 7 states and 1398 transitions. [2023-08-30 14:06:39,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 214 transitions, 1397 flow [2023-08-30 14:06:40,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 214 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:06:40,206 INFO L231 Difference]: Finished difference. Result has 88 places, 117 transitions, 904 flow [2023-08-30 14:06:40,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=904, PETRI_PLACES=88, PETRI_TRANSITIONS=117} [2023-08-30 14:06:40,207 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2023-08-30 14:06:40,207 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 117 transitions, 904 flow [2023-08-30 14:06:40,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:06:40,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:40,207 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:06:40,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:06:40,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:06:40,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1300074879, now seen corresponding path program 1 times [2023-08-30 14:06:40,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:40,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472689147] [2023-08-30 14:06:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:40,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:40,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:06:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:06:40,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:06:40,225 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:06:40,225 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-08-30 14:06:40,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-30 14:06:40,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-30 14:06:40,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-30 14:06:40,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-30 14:06:40,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-30 14:06:40,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-30 14:06:40,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-30 14:06:40,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-30 14:06:40,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-30 14:06:40,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-30 14:06:40,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-30 14:06:40,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-30 14:06:40,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-30 14:06:40,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-30 14:06:40,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-30 14:06:40,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-30 14:06:40,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-30 14:06:40,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-30 14:06:40,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-30 14:06:40,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-30 14:06:40,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-30 14:06:40,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-30 14:06:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:06:40,228 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:06:40,228 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:06:40,229 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:06:40,240 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:06:40,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 254 transitions, 552 flow [2023-08-30 14:06:40,285 INFO L130 PetriNetUnfolder]: 96/700 cut-off events. [2023-08-30 14:06:40,285 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:06:40,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 700 events. 96/700 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2743 event pairs, 6 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 482. Up to 32 conditions per place. [2023-08-30 14:06:40,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 254 transitions, 552 flow [2023-08-30 14:06:40,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 254 transitions, 552 flow [2023-08-30 14:06:40,292 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:06:40,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 254 transitions, 552 flow [2023-08-30 14:06:40,292 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 254 transitions, 552 flow [2023-08-30 14:06:40,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 254 transitions, 552 flow [2023-08-30 14:06:40,334 INFO L130 PetriNetUnfolder]: 96/700 cut-off events. [2023-08-30 14:06:40,335 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:06:40,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 700 events. 96/700 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2743 event pairs, 6 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 482. Up to 32 conditions per place. [2023-08-30 14:06:40,348 INFO L119 LiptonReduction]: Number of co-enabled transitions 34992 [2023-08-30 14:06:43,262 INFO L134 LiptonReduction]: Checked pairs total: 93415 [2023-08-30 14:06:43,263 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-08-30 14:06:43,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:06:43,264 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;@48a42c3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:06:43,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-30 14:06:43,265 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 14:06:43,265 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:06:43,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:06:43,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:06:43,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 14:06:43,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:06:43,266 INFO L85 PathProgramCache]: Analyzing trace with hash 58334, now seen corresponding path program 1 times [2023-08-30 14:06:43,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:06:43,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20560648] [2023-08-30 14:06:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:06:43,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:06:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:06:43,284 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 14:06:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:06:43,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20560648] [2023-08-30 14:06:43,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20560648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:06:43,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:06:43,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:06:43,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937515356] [2023-08-30 14:06:43,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:06:43,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:06:43,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:06:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:06:43,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:06:43,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 455 [2023-08-30 14:06:43,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 118 transitions, 280 flow. Second operand has 3 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 14:06:43,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:06:43,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 455 [2023-08-30 14:06:43,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand