./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/pthread-deagle/arithmetic_prog_ok.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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:40:46,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:40:46,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:40:46,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:40:46,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:40:46,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:40:46,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:40:46,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:40:46,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:40:46,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:40:46,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:40:46,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:40:46,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:40:46,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:40:46,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:40:46,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:40:46,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:40:46,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:40:46,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:40:46,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:40:46,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:40:46,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:40:46,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:40:46,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:40:46,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:40:46,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:40:46,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:40:46,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:40:46,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:40:46,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:40:46,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:40:46,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:40:46,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:40:46,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:40:46,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:40:46,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:40:46,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:40:46,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:40:46,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:40:46,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:40:46,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:40:46,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:40:46,962 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:40:46,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:40:46,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:40:46,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:40:46,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:40:46,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:40:46,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:40:46,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:40:46,966 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:40:46,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:40:46,967 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:40:46,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:40:46,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:40:46,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:40:46,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:40:46,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:40:46,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:40:46,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:40:46,968 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:40:46,969 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:40:46,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:40:46,969 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:40:46,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:40:46,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:40:46,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:40:46,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:40:46,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:40:46,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:40:46,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:40:46,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:40:46,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:40:46,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:40:46,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:40:46,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:40:46,972 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:40:46,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:40:46,972 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:40:46,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:40:47,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:40:47,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:40:47,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:40:47,328 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:40:47,329 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:40:47,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-09-01 08:40:48,581 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:40:48,841 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:40:48,841 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-09-01 08:40:48,853 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19349e97d/61ba8ee1f5c44a5e917d9c040955df87/FLAGe8fb74f12 [2023-09-01 08:40:48,867 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19349e97d/61ba8ee1f5c44a5e917d9c040955df87 [2023-09-01 08:40:48,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:40:48,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:40:48,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:40:48,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:40:48,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:40:48,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:40:48" (1/1) ... [2023-09-01 08:40:48,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c435508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:48, skipping insertion in model container [2023-09-01 08:40:48,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:40:48" (1/1) ... [2023-09-01 08:40:48,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:40:48,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:40:49,252 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-09-01 08:40:49,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:40:49,274 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:40:49,324 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-09-01 08:40:49,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:40:49,390 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:40:49,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49 WrapperNode [2023-09-01 08:40:49,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:40:49,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:40:49,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:40:49,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:40:49,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,470 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-09-01 08:40:49,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:40:49,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:40:49,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:40:49,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:40:49,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:40:49,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:40:49,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:40:49,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:40:49,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (1/1) ... [2023-09-01 08:40:49,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:40:49,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:40:49,532 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) [2023-09-01 08:40:49,534 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 [2023-09-01 08:40:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:40:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:40:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-09-01 08:40:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:40:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:40:49,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:40:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:40:49,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:40:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:40:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 08:40:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:40:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:40:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:40:49,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:40:49,562 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:40:49,713 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:40:49,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:40:49,965 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:40:49,972 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:40:49,972 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:40:49,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:40:49 BoogieIcfgContainer [2023-09-01 08:40:49,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:40:49,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:40:49,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:40:49,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:40:49,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:40:48" (1/3) ... [2023-09-01 08:40:49,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112314e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:40:49, skipping insertion in model container [2023-09-01 08:40:49,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:40:49" (2/3) ... [2023-09-01 08:40:49,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112314e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:40:49, skipping insertion in model container [2023-09-01 08:40:49,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:40:49" (3/3) ... [2023-09-01 08:40:49,994 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-09-01 08:40:50,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:40:50,010 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:40:50,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 08:40:50,011 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:40:50,128 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:40:50,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 146 transitions, 308 flow [2023-09-01 08:40:50,254 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2023-09-01 08:40:50,254 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:40:50,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 144 events. 10/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2023-09-01 08:40:50,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 146 transitions, 308 flow [2023-09-01 08:40:50,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 129 transitions, 267 flow [2023-09-01 08:40:50,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:40:50,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 129 transitions, 267 flow [2023-09-01 08:40:50,296 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 129 transitions, 267 flow [2023-09-01 08:40:50,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 129 transitions, 267 flow [2023-09-01 08:40:50,340 INFO L130 PetriNetUnfolder]: 8/129 cut-off events. [2023-09-01 08:40:50,341 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:40:50,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 129 events. 8/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-09-01 08:40:50,346 INFO L119 LiptonReduction]: Number of co-enabled transitions 3074 [2023-09-01 08:40:55,866 INFO L134 LiptonReduction]: Checked pairs total: 6805 [2023-09-01 08:40:55,867 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-09-01 08:40:55,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:40:55,883 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;@3544e1d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:40:55,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 08:40:55,888 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-09-01 08:40:55,888 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:40:55,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:55,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:40:55,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:55,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1191747266, now seen corresponding path program 1 times [2023-09-01 08:40:55,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:55,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066609418] [2023-09-01 08:40:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:55,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:56,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066609418] [2023-09-01 08:40:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066609418] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:56,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:56,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:56,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807030428] [2023-09-01 08:40:56,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:56,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 08:40:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:56,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 08:40:56,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 08:40:56,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 255 [2023-09-01 08:40:56,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:56,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 255 [2023-09-01 08:40:56,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:56,210 INFO L130 PetriNetUnfolder]: 345/594 cut-off events. [2023-09-01 08:40:56,210 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-09-01 08:40:56,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 594 events. 345/594 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2578 event pairs, 261 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 1074. Up to 561 conditions per place. [2023-09-01 08:40:56,218 INFO L137 encePairwiseOnDemand]: 254/255 looper letters, 28 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-09-01 08:40:56,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 135 flow [2023-09-01 08:40:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 08:40:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 08:40:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 301 transitions. [2023-09-01 08:40:56,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5901960784313726 [2023-09-01 08:40:56,237 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 301 transitions. [2023-09-01 08:40:56,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 301 transitions. [2023-09-01 08:40:56,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:56,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 301 transitions. [2023-09-01 08:40:56,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,250 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,252 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 81 flow. Second operand 2 states and 301 transitions. [2023-09-01 08:40:56,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 135 flow [2023-09-01 08:40:56,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:40:56,256 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 74 flow [2023-09-01 08:40:56,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-09-01 08:40:56,261 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-09-01 08:40:56,261 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 74 flow [2023-09-01 08:40:56,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:56,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:56,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:40:56,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:56,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1710452295, now seen corresponding path program 1 times [2023-09-01 08:40:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505822174] [2023-09-01 08:40:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:56,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:56,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505822174] [2023-09-01 08:40:56,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505822174] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:56,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:56,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162299241] [2023-09-01 08:40:56,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:40:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:40:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:40:56,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-09-01 08:40:56,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:56,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-09-01 08:40:56,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:56,681 INFO L130 PetriNetUnfolder]: 1041/1685 cut-off events. [2023-09-01 08:40:56,682 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 08:40:56,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3349 conditions, 1685 events. 1041/1685 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7432 event pairs, 260 based on Foata normal form. 0/1087 useless extension candidates. Maximal degree in co-relation 3346. Up to 643 conditions per place. [2023-09-01 08:40:56,690 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 77 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2023-09-01 08:40:56,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 99 transitions, 397 flow [2023-09-01 08:40:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:40:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:40:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 730 transitions. [2023-09-01 08:40:56,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2023-09-01 08:40:56,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 730 transitions. [2023-09-01 08:40:56,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 730 transitions. [2023-09-01 08:40:56,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:56,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 730 transitions. [2023-09-01 08:40:56,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,700 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,700 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 74 flow. Second operand 5 states and 730 transitions. [2023-09-01 08:40:56,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 99 transitions, 397 flow [2023-09-01 08:40:56,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:40:56,703 INFO L231 Difference]: Finished difference. Result has 44 places, 53 transitions, 230 flow [2023-09-01 08:40:56,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2023-09-01 08:40:56,704 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-09-01 08:40:56,704 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 230 flow [2023-09-01 08:40:56,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:56,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:56,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:40:56,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:56,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:56,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1710452403, now seen corresponding path program 1 times [2023-09-01 08:40:56,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:56,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754806472] [2023-09-01 08:40:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:56,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:56,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754806472] [2023-09-01 08:40:56,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754806472] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:56,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:56,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:56,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121430703] [2023-09-01 08:40:56,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:56,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:40:56,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:56,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:40:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:40:56,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 255 [2023-09-01 08:40:56,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:56,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:56,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 255 [2023-09-01 08:40:56,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:57,077 INFO L130 PetriNetUnfolder]: 1487/2394 cut-off events. [2023-09-01 08:40:57,078 INFO L131 PetriNetUnfolder]: For 1212/1212 co-relation queries the response was YES. [2023-09-01 08:40:57,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6666 conditions, 2394 events. 1487/2394 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11403 event pairs, 230 based on Foata normal form. 152/2045 useless extension candidates. Maximal degree in co-relation 6659. Up to 1202 conditions per place. [2023-09-01 08:40:57,094 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 103 selfloop transitions, 43 changer transitions 0/148 dead transitions. [2023-09-01 08:40:57,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 148 transitions, 925 flow [2023-09-01 08:40:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:40:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:40:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-09-01 08:40:57,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5749019607843138 [2023-09-01 08:40:57,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-09-01 08:40:57,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-09-01 08:40:57,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:57,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-09-01 08:40:57,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,102 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,102 INFO L175 Difference]: Start difference. First operand has 44 places, 53 transitions, 230 flow. Second operand 5 states and 733 transitions. [2023-09-01 08:40:57,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 148 transitions, 925 flow [2023-09-01 08:40:57,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 148 transitions, 925 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:40:57,111 INFO L231 Difference]: Finished difference. Result has 52 places, 91 transitions, 706 flow [2023-09-01 08:40:57,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=706, PETRI_PLACES=52, PETRI_TRANSITIONS=91} [2023-09-01 08:40:57,113 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-09-01 08:40:57,113 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 91 transitions, 706 flow [2023-09-01 08:40:57,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:57,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:57,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:40:57,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:57,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:57,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1484417982, now seen corresponding path program 1 times [2023-09-01 08:40:57,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:57,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401100963] [2023-09-01 08:40:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:57,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:57,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:57,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401100963] [2023-09-01 08:40:57,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401100963] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:57,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:57,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628720277] [2023-09-01 08:40:57,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:57,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:57,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:57,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:57,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:57,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-09-01 08:40:57,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 91 transitions, 706 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:57,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-09-01 08:40:57,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:57,551 INFO L130 PetriNetUnfolder]: 1778/3057 cut-off events. [2023-09-01 08:40:57,551 INFO L131 PetriNetUnfolder]: For 7271/7667 co-relation queries the response was YES. [2023-09-01 08:40:57,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11184 conditions, 3057 events. 1778/3057 cut-off events. For 7271/7667 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17436 event pairs, 553 based on Foata normal form. 92/2559 useless extension candidates. Maximal degree in co-relation 11173. Up to 1779 conditions per place. [2023-09-01 08:40:57,611 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 109 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2023-09-01 08:40:57,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 139 transitions, 1300 flow [2023-09-01 08:40:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-09-01 08:40:57,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2023-09-01 08:40:57,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-09-01 08:40:57,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-09-01 08:40:57,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:57,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-09-01 08:40:57,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,617 INFO L175 Difference]: Start difference. First operand has 52 places, 91 transitions, 706 flow. Second operand 3 states and 447 transitions. [2023-09-01 08:40:57,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 139 transitions, 1300 flow [2023-09-01 08:40:57,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 139 transitions, 1300 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:40:57,628 INFO L231 Difference]: Finished difference. Result has 55 places, 99 transitions, 861 flow [2023-09-01 08:40:57,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=861, PETRI_PLACES=55, PETRI_TRANSITIONS=99} [2023-09-01 08:40:57,629 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-09-01 08:40:57,629 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 99 transitions, 861 flow [2023-09-01 08:40:57,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:57,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:57,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:40:57,630 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:57,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1288775049, now seen corresponding path program 1 times [2023-09-01 08:40:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:57,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221616683] [2023-09-01 08:40:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221616683] [2023-09-01 08:40:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221616683] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:57,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:57,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:57,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739210664] [2023-09-01 08:40:57,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:57,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 255 [2023-09-01 08:40:57,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 99 transitions, 861 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:57,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 255 [2023-09-01 08:40:57,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:57,916 INFO L130 PetriNetUnfolder]: 1166/1959 cut-off events. [2023-09-01 08:40:57,916 INFO L131 PetriNetUnfolder]: For 5347/5717 co-relation queries the response was YES. [2023-09-01 08:40:57,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7770 conditions, 1959 events. 1166/1959 cut-off events. For 5347/5717 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9404 event pairs, 252 based on Foata normal form. 128/1676 useless extension candidates. Maximal degree in co-relation 7757. Up to 1521 conditions per place. [2023-09-01 08:40:57,931 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 88 selfloop transitions, 12 changer transitions 3/114 dead transitions. [2023-09-01 08:40:57,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 114 transitions, 1128 flow [2023-09-01 08:40:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-09-01 08:40:57,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5699346405228758 [2023-09-01 08:40:57,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-09-01 08:40:57,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-09-01 08:40:57,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:57,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-09-01 08:40:57,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,938 INFO L175 Difference]: Start difference. First operand has 55 places, 99 transitions, 861 flow. Second operand 3 states and 436 transitions. [2023-09-01 08:40:57,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 114 transitions, 1128 flow [2023-09-01 08:40:57,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 114 transitions, 1123 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:40:57,947 INFO L231 Difference]: Finished difference. Result has 58 places, 95 transitions, 860 flow [2023-09-01 08:40:57,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=860, PETRI_PLACES=58, PETRI_TRANSITIONS=95} [2023-09-01 08:40:57,948 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:40:57,948 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 95 transitions, 860 flow [2023-09-01 08:40:57,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:57,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:57,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:57,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:40:57,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:57,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:57,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1476933034, now seen corresponding path program 1 times [2023-09-01 08:40:57,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:57,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929881155] [2023-09-01 08:40:57,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:57,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:58,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:58,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929881155] [2023-09-01 08:40:58,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929881155] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:58,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:58,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:40:58,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570142286] [2023-09-01 08:40:58,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:58,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:58,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:58,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-09-01 08:40:58,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 95 transitions, 860 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:58,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-09-01 08:40:58,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:58,169 INFO L130 PetriNetUnfolder]: 407/866 cut-off events. [2023-09-01 08:40:58,169 INFO L131 PetriNetUnfolder]: For 1455/1455 co-relation queries the response was YES. [2023-09-01 08:40:58,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 866 events. 407/866 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4310 event pairs, 124 based on Foata normal form. 52/822 useless extension candidates. Maximal degree in co-relation 2985. Up to 407 conditions per place. [2023-09-01 08:40:58,176 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 29 selfloop transitions, 16 changer transitions 0/55 dead transitions. [2023-09-01 08:40:58,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 431 flow [2023-09-01 08:40:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-09-01 08:40:58,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-09-01 08:40:58,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-09-01 08:40:58,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-09-01 08:40:58,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:58,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-09-01 08:40:58,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,182 INFO L175 Difference]: Start difference. First operand has 58 places, 95 transitions, 860 flow. Second operand 3 states and 420 transitions. [2023-09-01 08:40:58,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 431 flow [2023-09-01 08:40:58,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 342 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-09-01 08:40:58,197 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 259 flow [2023-09-01 08:40:58,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-09-01 08:40:58,200 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2023-09-01 08:40:58,200 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 259 flow [2023-09-01 08:40:58,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:58,201 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 08:40:58,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:40:58,201 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:58,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash 51057020, now seen corresponding path program 1 times [2023-09-01 08:40:58,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:58,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842748611] [2023-09-01 08:40:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:58,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:58,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:58,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842748611] [2023-09-01 08:40:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842748611] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:58,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:58,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:40:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569136901] [2023-09-01 08:40:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:58,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:40:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:40:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:40:58,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 255 [2023-09-01 08:40:58,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:58,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 255 [2023-09-01 08:40:58,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:58,482 INFO L130 PetriNetUnfolder]: 380/763 cut-off events. [2023-09-01 08:40:58,483 INFO L131 PetriNetUnfolder]: For 630/630 co-relation queries the response was YES. [2023-09-01 08:40:58,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 763 events. 380/763 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3215 event pairs, 81 based on Foata normal form. 26/745 useless extension candidates. Maximal degree in co-relation 2273. Up to 304 conditions per place. [2023-09-01 08:40:58,487 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 57 selfloop transitions, 11 changer transitions 7/77 dead transitions. [2023-09-01 08:40:58,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 492 flow [2023-09-01 08:40:58,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:40:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:40:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 820 transitions. [2023-09-01 08:40:58,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-09-01 08:40:58,490 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 820 transitions. [2023-09-01 08:40:58,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 820 transitions. [2023-09-01 08:40:58,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:58,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 820 transitions. [2023-09-01 08:40:58,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,495 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,495 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 259 flow. Second operand 6 states and 820 transitions. [2023-09-01 08:40:58,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 492 flow [2023-09-01 08:40:58,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:40:58,498 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 265 flow [2023-09-01 08:40:58,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-09-01 08:40:58,499 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-09-01 08:40:58,499 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 265 flow [2023-09-01 08:40:58,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:58,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:58,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:40:58,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:58,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:58,501 INFO L85 PathProgramCache]: Analyzing trace with hash 15479413, now seen corresponding path program 1 times [2023-09-01 08:40:58,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:58,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587204483] [2023-09-01 08:40:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:58,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:58,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:58,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587204483] [2023-09-01 08:40:58,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587204483] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:58,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:58,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:40:58,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827466886] [2023-09-01 08:40:58,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:58,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:40:58,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:40:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:40:58,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 255 [2023-09-01 08:40:58,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:58,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 255 [2023-09-01 08:40:58,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:58,737 INFO L130 PetriNetUnfolder]: 465/956 cut-off events. [2023-09-01 08:40:58,737 INFO L131 PetriNetUnfolder]: For 1159/1159 co-relation queries the response was YES. [2023-09-01 08:40:58,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2839 conditions, 956 events. 465/956 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4382 event pairs, 90 based on Foata normal form. 22/934 useless extension candidates. Maximal degree in co-relation 2826. Up to 335 conditions per place. [2023-09-01 08:40:58,743 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 62 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2023-09-01 08:40:58,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 571 flow [2023-09-01 08:40:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:40:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:40:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 822 transitions. [2023-09-01 08:40:58,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2023-09-01 08:40:58,746 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 822 transitions. [2023-09-01 08:40:58,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 822 transitions. [2023-09-01 08:40:58,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:58,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 822 transitions. [2023-09-01 08:40:58,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,751 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,751 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 265 flow. Second operand 6 states and 822 transitions. [2023-09-01 08:40:58,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 571 flow [2023-09-01 08:40:58,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 545 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:40:58,755 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 341 flow [2023-09-01 08:40:58,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-09-01 08:40:58,756 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:40:58,756 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 341 flow [2023-09-01 08:40:58,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:58,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:58,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:40:58,757 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:58,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1990762071, now seen corresponding path program 1 times [2023-09-01 08:40:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:58,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663225749] [2023-09-01 08:40:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:58,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663225749] [2023-09-01 08:40:58,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663225749] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:58,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:58,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:40:58,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421454451] [2023-09-01 08:40:58,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:58,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:40:58,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:58,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:40:58,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:40:58,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-09-01 08:40:58,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:58,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-09-01 08:40:58,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:58,932 INFO L130 PetriNetUnfolder]: 414/921 cut-off events. [2023-09-01 08:40:58,933 INFO L131 PetriNetUnfolder]: For 1226/1230 co-relation queries the response was YES. [2023-09-01 08:40:58,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 921 events. 414/921 cut-off events. For 1226/1230 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4693 event pairs, 234 based on Foata normal form. 18/889 useless extension candidates. Maximal degree in co-relation 2784. Up to 630 conditions per place. [2023-09-01 08:40:58,944 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 50 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-09-01 08:40:58,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 514 flow [2023-09-01 08:40:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:40:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:40:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-09-01 08:40:58,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2023-09-01 08:40:58,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-09-01 08:40:58,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-09-01 08:40:58,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:58,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-09-01 08:40:58,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,950 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 341 flow. Second operand 3 states and 441 transitions. [2023-09-01 08:40:58,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 514 flow [2023-09-01 08:40:58,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 474 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 08:40:58,956 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 322 flow [2023-09-01 08:40:58,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-09-01 08:40:58,957 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-09-01 08:40:58,957 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 322 flow [2023-09-01 08:40:58,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:58,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:58,957 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:58,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:40:58,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:58,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:58,958 INFO L85 PathProgramCache]: Analyzing trace with hash 902276768, now seen corresponding path program 1 times [2023-09-01 08:40:58,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:58,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597038467] [2023-09-01 08:40:58,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:58,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:59,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597038467] [2023-09-01 08:40:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597038467] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:40:59,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828439746] [2023-09-01 08:40:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:59,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:40:59,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:40:59,073 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) [2023-09-01 08:40:59,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:40:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:59,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:40:59,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:40:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:59,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:40:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:59,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828439746] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:40:59,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:40:59,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-09-01 08:40:59,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888705548] [2023-09-01 08:40:59,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:40:59,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:40:59,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:40:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:40:59,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 255 [2023-09-01 08:40:59,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 322 flow. Second operand has 10 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:59,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:59,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 255 [2023-09-01 08:40:59,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:40:59,582 INFO L130 PetriNetUnfolder]: 440/943 cut-off events. [2023-09-01 08:40:59,582 INFO L131 PetriNetUnfolder]: For 1034/1034 co-relation queries the response was YES. [2023-09-01 08:40:59,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 943 events. 440/943 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4528 event pairs, 106 based on Foata normal form. 48/947 useless extension candidates. Maximal degree in co-relation 2831. Up to 395 conditions per place. [2023-09-01 08:40:59,587 INFO L137 encePairwiseOnDemand]: 237/255 looper letters, 51 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2023-09-01 08:40:59,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 542 flow [2023-09-01 08:40:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:40:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:40:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-09-01 08:40:59,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029411764705882 [2023-09-01 08:40:59,590 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-09-01 08:40:59,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-09-01 08:40:59,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:40:59,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-09-01 08:40:59,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:59,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:59,597 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:59,597 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 322 flow. Second operand 8 states and 1026 transitions. [2023-09-01 08:40:59,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 542 flow [2023-09-01 08:40:59,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:40:59,601 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 357 flow [2023-09-01 08:40:59,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-09-01 08:40:59,602 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-09-01 08:40:59,602 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 357 flow [2023-09-01 08:40:59,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:59,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:40:59,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:40:59,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 08:40:59,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 08:40:59,809 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:40:59,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:40:59,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1885524128, now seen corresponding path program 1 times [2023-09-01 08:40:59,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:40:59,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560394565] [2023-09-01 08:40:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:40:59,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:40:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:40:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:40:59,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:40:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560394565] [2023-09-01 08:40:59,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560394565] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:40:59,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:40:59,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:40:59,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820708984] [2023-09-01 08:40:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:40:59,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:40:59,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:40:59,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:40:59,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:40:59,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-09-01 08:40:59,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:40:59,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:40:59,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-09-01 08:40:59,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:00,123 INFO L130 PetriNetUnfolder]: 404/865 cut-off events. [2023-09-01 08:41:00,123 INFO L131 PetriNetUnfolder]: For 930/930 co-relation queries the response was YES. [2023-09-01 08:41:00,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 865 events. 404/865 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3988 event pairs, 107 based on Foata normal form. 20/841 useless extension candidates. Maximal degree in co-relation 2854. Up to 332 conditions per place. [2023-09-01 08:41:00,128 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 53 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2023-09-01 08:41:00,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 556 flow [2023-09-01 08:41:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:41:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:41:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-09-01 08:41:00,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2023-09-01 08:41:00,131 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-09-01 08:41:00,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-09-01 08:41:00,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:00,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-09-01 08:41:00,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,138 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,138 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 357 flow. Second operand 8 states and 1032 transitions. [2023-09-01 08:41:00,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 556 flow [2023-09-01 08:41:00,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 518 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 08:41:00,142 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 321 flow [2023-09-01 08:41:00,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=321, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-09-01 08:41:00,143 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-09-01 08:41:00,143 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 321 flow [2023-09-01 08:41:00,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:00,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:41:00,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:41:00,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:41:00,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash -471659345, now seen corresponding path program 1 times [2023-09-01 08:41:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:00,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560134616] [2023-09-01 08:41:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:41:00,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:00,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560134616] [2023-09-01 08:41:00,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560134616] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:00,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:41:00,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:41:00,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870030802] [2023-09-01 08:41:00,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:00,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:41:00,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:00,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:41:00,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:41:00,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 255 [2023-09-01 08:41:00,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:00,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 255 [2023-09-01 08:41:00,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:00,298 INFO L130 PetriNetUnfolder]: 321/734 cut-off events. [2023-09-01 08:41:00,298 INFO L131 PetriNetUnfolder]: For 776/778 co-relation queries the response was YES. [2023-09-01 08:41:00,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 734 events. 321/734 cut-off events. For 776/778 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3371 event pairs, 148 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 2361. Up to 350 conditions per place. [2023-09-01 08:41:00,302 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 47 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-09-01 08:41:00,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 506 flow [2023-09-01 08:41:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:41:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:41:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-09-01 08:41:00,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2023-09-01 08:41:00,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-09-01 08:41:00,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-09-01 08:41:00,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:00,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-09-01 08:41:00,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,309 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 321 flow. Second operand 3 states and 432 transitions. [2023-09-01 08:41:00,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 506 flow [2023-09-01 08:41:00,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 465 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 08:41:00,313 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 283 flow [2023-09-01 08:41:00,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-09-01 08:41:00,315 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:41:00,315 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 283 flow [2023-09-01 08:41:00,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:00,315 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:41:00,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:41:00,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:41:00,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2126348470, now seen corresponding path program 1 times [2023-09-01 08:41:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:00,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450372906] [2023-09-01 08:41:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:41:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450372906] [2023-09-01 08:41:00,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450372906] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:00,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:41:00,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:41:00,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743178555] [2023-09-01 08:41:00,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:00,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:41:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:41:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:41:00,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-09-01 08:41:00,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:00,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-09-01 08:41:00,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:00,462 INFO L130 PetriNetUnfolder]: 302/669 cut-off events. [2023-09-01 08:41:00,463 INFO L131 PetriNetUnfolder]: For 876/878 co-relation queries the response was YES. [2023-09-01 08:41:00,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 669 events. 302/669 cut-off events. For 876/878 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2937 event pairs, 58 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 2111. Up to 524 conditions per place. [2023-09-01 08:41:00,466 INFO L137 encePairwiseOnDemand]: 253/255 looper letters, 42 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-09-01 08:41:00,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 414 flow [2023-09-01 08:41:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:41:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:41:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-09-01 08:41:00,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607843137254902 [2023-09-01 08:41:00,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-09-01 08:41:00,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-09-01 08:41:00,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:00,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-09-01 08:41:00,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,472 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 283 flow. Second operand 3 states and 429 transitions. [2023-09-01 08:41:00,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 414 flow [2023-09-01 08:41:00,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:41:00,474 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 272 flow [2023-09-01 08:41:00,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2023-09-01 08:41:00,475 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:41:00,475 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 272 flow [2023-09-01 08:41:00,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:00,476 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:41:00,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:41:00,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:41:00,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash -495404400, now seen corresponding path program 1 times [2023-09-01 08:41:00,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:00,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270510308] [2023-09-01 08:41:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:41:00,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270510308] [2023-09-01 08:41:00,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270510308] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:00,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:41:00,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:41:00,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249109221] [2023-09-01 08:41:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:00,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:41:00,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:00,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:41:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:41:00,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 255 [2023-09-01 08:41:00,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:00,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 255 [2023-09-01 08:41:00,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:00,608 INFO L130 PetriNetUnfolder]: 283/616 cut-off events. [2023-09-01 08:41:00,608 INFO L131 PetriNetUnfolder]: For 748/750 co-relation queries the response was YES. [2023-09-01 08:41:00,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 616 events. 283/616 cut-off events. For 748/750 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2574 event pairs, 76 based on Foata normal form. 2/614 useless extension candidates. Maximal degree in co-relation 1909. Up to 371 conditions per place. [2023-09-01 08:41:00,611 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 34 selfloop transitions, 4 changer transitions 5/53 dead transitions. [2023-09-01 08:41:00,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 403 flow [2023-09-01 08:41:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:41:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:41:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-09-01 08:41:00,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581699346405229 [2023-09-01 08:41:00,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-09-01 08:41:00,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-09-01 08:41:00,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:00,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-09-01 08:41:00,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,616 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 272 flow. Second operand 3 states and 427 transitions. [2023-09-01 08:41:00,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 403 flow [2023-09-01 08:41:00,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:41:00,619 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 275 flow [2023-09-01 08:41:00,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-09-01 08:41:00,620 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-09-01 08:41:00,620 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 275 flow [2023-09-01 08:41:00,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:41:00,620 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:41:00,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:41:00,621 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:41:00,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:41:00,621 INFO L85 PathProgramCache]: Analyzing trace with hash -479499924, now seen corresponding path program 1 times [2023-09-01 08:41:00,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:41:00,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930804475] [2023-09-01 08:41:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:00,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:41:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:41:00,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:41:00,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930804475] [2023-09-01 08:41:00,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930804475] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:41:00,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467099076] [2023-09-01 08:41:00,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:41:00,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:41:00,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:41:00,678 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) [2023-09-01 08:41:00,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:41:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:41:00,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:41:00,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:41:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:41:00,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:41:00,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467099076] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:41:00,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:41:00,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:41:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689917203] [2023-09-01 08:41:00,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:41:00,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:41:00,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:41:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:41:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:41:00,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-09-01 08:41:00,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:41:00,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-09-01 08:41:00,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:41:00,945 INFO L130 PetriNetUnfolder]: 211/466 cut-off events. [2023-09-01 08:41:00,946 INFO L131 PetriNetUnfolder]: For 670/676 co-relation queries the response was YES. [2023-09-01 08:41:00,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 466 events. 211/466 cut-off events. For 670/676 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1752 event pairs, 48 based on Foata normal form. 12/476 useless extension candidates. Maximal degree in co-relation 1535. Up to 326 conditions per place. [2023-09-01 08:41:00,947 INFO L137 encePairwiseOnDemand]: 252/255 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2023-09-01 08:41:00,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 391 flow [2023-09-01 08:41:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:41:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:41:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 563 transitions. [2023-09-01 08:41:00,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5519607843137255 [2023-09-01 08:41:00,950 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 563 transitions. [2023-09-01 08:41:00,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 563 transitions. [2023-09-01 08:41:00,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:41:00,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 563 transitions. [2023-09-01 08:41:00,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,953 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,954 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 275 flow. Second operand 4 states and 563 transitions. [2023-09-01 08:41:00,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 391 flow [2023-09-01 08:41:00,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:41:00,956 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-09-01 08:41:00,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-09-01 08:41:00,957 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-09-01 08:41:00,957 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-09-01 08:41:00,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:41:00,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-09-01 08:41:00,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-09-01 08:41:00,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 08:41:00,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 08:41:00,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 08:41:00,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 08:41:00,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 08:41:00,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 08:41:00,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-09-01 08:41:00,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-09-01 08:41:00,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-09-01 08:41:00,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-09-01 08:41:00,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 08:41:00,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 08:41:00,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 08:41:00,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 08:41:00,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 08:41:00,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 08:41:00,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:41:01,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 08:41:01,168 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:41:01,173 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:41:01,174 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:41:01,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:41:01 BasicIcfg [2023-09-01 08:41:01,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:41:01,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:41:01,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:41:01,177 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:41:01,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:40:49" (3/4) ... [2023-09-01 08:41:01,179 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:41:01,185 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:41:01,185 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:41:01,189 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 08:41:01,189 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 08:41:01,190 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:41:01,190 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:41:01,222 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:41:01,222 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:41:01,223 INFO L158 Benchmark]: Toolchain (without parser) took 12351.94ms. Allocated memory was 94.4MB in the beginning and 230.7MB in the end (delta: 136.3MB). Free memory was 71.0MB in the beginning and 62.1MB in the end (delta: 8.8MB). Peak memory consumption was 146.6MB. Max. memory is 16.1GB. [2023-09-01 08:41:01,223 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 67.1MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:41:01,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.77ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 68.2MB in the end (delta: 2.5MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2023-09-01 08:41:01,223 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.06ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 65.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:41:01,224 INFO L158 Benchmark]: Boogie Preprocessor took 35.56ms. Allocated memory is still 94.4MB. Free memory was 65.8MB in the beginning and 64.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:41:01,224 INFO L158 Benchmark]: RCFGBuilder took 466.64ms. Allocated memory is still 94.4MB. Free memory was 64.1MB in the beginning and 46.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-09-01 08:41:01,224 INFO L158 Benchmark]: TraceAbstraction took 11200.28ms. Allocated memory was 94.4MB in the beginning and 230.7MB in the end (delta: 136.3MB). Free memory was 46.1MB in the beginning and 64.9MB in the end (delta: -18.8MB). Peak memory consumption was 120.1MB. Max. memory is 16.1GB. [2023-09-01 08:41:01,225 INFO L158 Benchmark]: Witness Printer took 45.46ms. Allocated memory is still 230.7MB. Free memory was 64.9MB in the beginning and 62.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:41:01,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 67.1MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 519.77ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 68.2MB in the end (delta: 2.5MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.06ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 65.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.56ms. Allocated memory is still 94.4MB. Free memory was 65.8MB in the beginning and 64.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 466.64ms. Allocated memory is still 94.4MB. Free memory was 64.1MB in the beginning and 46.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11200.28ms. Allocated memory was 94.4MB in the beginning and 230.7MB in the end (delta: 136.3MB). Free memory was 46.1MB in the beginning and 64.9MB in the end (delta: -18.8MB). Peak memory consumption was 120.1MB. Max. memory is 16.1GB. * Witness Printer took 45.46ms. Allocated memory is still 230.7MB. Free memory was 64.9MB in the beginning and 62.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 128 PlacesBefore, 38 PlacesAfterwards, 129 TransitionsBefore, 36 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 109 TotalNumberOfCompositions, 6805 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3827, independent: 3611, independent conditional: 0, independent unconditional: 3611, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1671, independent: 1627, independent conditional: 0, independent unconditional: 1627, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3827, independent: 1984, independent conditional: 0, independent unconditional: 1984, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 1671, unknown conditional: 0, unknown unconditional: 1671] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 155, Positive conditional cache size: 0, Positive unconditional cache size: 155, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 198 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.0s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 868 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 645 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 124 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1624 IncrementalHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 104 mSDtfsCounter, 1624 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=861occurred in iteration=4, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 669 SizeOfPredicates, 4 NumberOfNonLiveVariables, 508 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 28/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:41:01,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE