./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.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 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:47:21,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:47:21,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:47:21,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:47:21,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:47:21,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:47:21,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:47:21,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:47:21,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:47:21,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:47:21,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:47:21,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:47:21,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:47:21,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:47:21,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:47:21,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:47:21,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:47:21,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:47:21,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:47:21,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:47:21,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:47:21,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:47:21,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:47:21,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:47:22,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:47:22,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:47:22,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:47:22,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:47:22,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:47:22,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:47:22,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:47:22,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:47:22,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:47:22,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:47:22,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:47:22,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:47:22,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:47:22,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:47:22,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:47:22,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:47:22,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:47:22,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:47:22,058 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:47:22,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:47:22,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:47:22,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:47:22,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:47:22,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:47:22,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:47:22,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:47:22,061 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:47:22,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:47:22,062 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:47:22,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:47:22,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:47:22,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:47:22,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:47:22,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:47:22,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:47:22,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:47:22,064 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:47:22,064 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:47:22,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:47:22,064 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:47:22,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:47:22,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:47:22,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:47:22,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:47:22,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:47:22,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:47:22,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:47:22,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:47:22,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:47:22,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:47:22,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:47:22,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:47:22,067 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:47:22,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:47:22,067 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:47:22,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:47:22,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:47:22,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:47:22,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:47:22,378 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:47:22,378 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:47:22,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2023-08-30 12:47:23,467 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:47:23,674 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:47:23,675 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2023-08-30 12:47:23,687 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5a4832f/0f5b4360cd4b4706aa0e3494ee4f1f5f/FLAGa413d8cbc [2023-08-30 12:47:23,699 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5a4832f/0f5b4360cd4b4706aa0e3494ee4f1f5f [2023-08-30 12:47:23,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:47:23,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:47:23,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:47:23,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:47:23,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:47:23,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:47:23" (1/1) ... [2023-08-30 12:47:23,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcd4bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:23, skipping insertion in model container [2023-08-30 12:47:23,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:47:23" (1/1) ... [2023-08-30 12:47:23,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:47:23,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:47:24,098 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/stateful01-1.i[30826,30839] [2023-08-30 12:47:24,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:47:24,111 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:47:24,156 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/stateful01-1.i[30826,30839] [2023-08-30 12:47:24,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:47:24,195 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:47:24,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24 WrapperNode [2023-08-30 12:47:24,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:47:24,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:47:24,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:47:24,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:47:24,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,242 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2023-08-30 12:47:24,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:47:24,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:47:24,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:47:24,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:47:24,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,284 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:47:24,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:47:24,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:47:24,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:47:24,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (1/1) ... [2023-08-30 12:47:24,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:47:24,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:24,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:47:24,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:47:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:47:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:47:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:47:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:47:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:47:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:47:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 12:47:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:47:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:47:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:47:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:47:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:47:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:47:24,387 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:47:24,541 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:47:24,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:47:24,778 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:47:24,793 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:47:24,793 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 12:47:24,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:47:24 BoogieIcfgContainer [2023-08-30 12:47:24,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:47:24,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:47:24,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:47:24,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:47:24,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:47:23" (1/3) ... [2023-08-30 12:47:24,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ad4c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:47:24, skipping insertion in model container [2023-08-30 12:47:24,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:24" (2/3) ... [2023-08-30 12:47:24,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ad4c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:47:24, skipping insertion in model container [2023-08-30 12:47:24,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:47:24" (3/3) ... [2023-08-30 12:47:24,812 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2023-08-30 12:47:24,820 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:47:24,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:47:24,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:47:24,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:47:24,930 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:47:24,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 104 transitions, 224 flow [2023-08-30 12:47:25,041 INFO L130 PetriNetUnfolder]: 1/102 cut-off events. [2023-08-30 12:47:25,042 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:47:25,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 1/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-08-30 12:47:25,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 104 transitions, 224 flow [2023-08-30 12:47:25,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 89 transitions, 187 flow [2023-08-30 12:47:25,052 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:47:25,066 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 89 transitions, 187 flow [2023-08-30 12:47:25,073 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 89 transitions, 187 flow [2023-08-30 12:47:25,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 89 transitions, 187 flow [2023-08-30 12:47:25,109 INFO L130 PetriNetUnfolder]: 0/89 cut-off events. [2023-08-30 12:47:25,109 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:47:25,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 89 events. 0/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-30 12:47:25,112 INFO L119 LiptonReduction]: Number of co-enabled transitions 1516 [2023-08-30 12:47:28,111 INFO L134 LiptonReduction]: Checked pairs total: 6367 [2023-08-30 12:47:28,112 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-30 12:47:28,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:47:28,130 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;@fcbb62d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:47:28,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:47:28,133 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2023-08-30 12:47:28,134 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:47:28,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:28,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:47:28,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:28,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:28,140 INFO L85 PathProgramCache]: Analyzing trace with hash 10682487, now seen corresponding path program 1 times [2023-08-30 12:47:28,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:28,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586732412] [2023-08-30 12:47:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:28,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:28,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586732412] [2023-08-30 12:47:28,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586732412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:28,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:28,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:47:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581961857] [2023-08-30 12:47:28,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:28,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:28,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:28,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:28,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 165 [2023-08-30 12:47:28,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:28,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:28,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 165 [2023-08-30 12:47:28,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:28,650 INFO L130 PetriNetUnfolder]: 243/524 cut-off events. [2023-08-30 12:47:28,650 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 12:47:28,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 524 events. 243/524 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2636 event pairs, 83 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 948. Up to 303 conditions per place. [2023-08-30 12:47:28,658 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 38 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-30 12:47:28,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 195 flow [2023-08-30 12:47:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:28,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-08-30 12:47:28,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2023-08-30 12:47:28,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-08-30 12:47:28,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-08-30 12:47:28,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:28,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-08-30 12:47:28,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:28,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:28,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:28,697 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 75 flow. Second operand 3 states and 319 transitions. [2023-08-30 12:47:28,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 195 flow [2023-08-30 12:47:28,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 187 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:47:28,701 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 86 flow [2023-08-30 12:47:28,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-30 12:47:28,708 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-30 12:47:28,709 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 86 flow [2023-08-30 12:47:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:28,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:28,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:47:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:47:28,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:28,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash 10682535, now seen corresponding path program 1 times [2023-08-30 12:47:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:28,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418135645] [2023-08-30 12:47:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:28,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418135645] [2023-08-30 12:47:28,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418135645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:28,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:28,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:47:28,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413998195] [2023-08-30 12:47:28,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:28,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:28,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:28,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:28,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 165 [2023-08-30 12:47:28,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 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) [2023-08-30 12:47:28,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:28,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 165 [2023-08-30 12:47:28,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:28,949 INFO L130 PetriNetUnfolder]: 250/585 cut-off events. [2023-08-30 12:47:28,949 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2023-08-30 12:47:28,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 585 events. 250/585 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2986 event pairs, 96 based on Foata normal form. 6/503 useless extension candidates. Maximal degree in co-relation 964. Up to 373 conditions per place. [2023-08-30 12:47:28,957 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 39 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-30 12:47:28,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 211 flow [2023-08-30 12:47:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-30 12:47:28,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2023-08-30 12:47:28,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-30 12:47:28,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-30 12:47:28,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:28,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-30 12:47:28,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:28,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:28,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:28,966 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 86 flow. Second operand 3 states and 318 transitions. [2023-08-30 12:47:28,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 211 flow [2023-08-30 12:47:28,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 199 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:47:28,969 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 96 flow [2023-08-30 12:47:28,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-08-30 12:47:28,970 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-30 12:47:28,971 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 96 flow [2023-08-30 12:47:28,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 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) [2023-08-30 12:47:28,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:28,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:28,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:47:28,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:28,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash -29391936, now seen corresponding path program 1 times [2023-08-30 12:47:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:28,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312668707] [2023-08-30 12:47:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:29,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:29,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312668707] [2023-08-30 12:47:29,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312668707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:29,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:29,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:47:29,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804370150] [2023-08-30 12:47:29,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:29,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:29,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:29,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:29,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 165 [2023-08-30 12:47:29,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:29,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 165 [2023-08-30 12:47:29,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:29,242 INFO L130 PetriNetUnfolder]: 253/516 cut-off events. [2023-08-30 12:47:29,243 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-08-30 12:47:29,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 516 events. 253/516 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2297 event pairs, 143 based on Foata normal form. 18/494 useless extension candidates. Maximal degree in co-relation 924. Up to 264 conditions per place. [2023-08-30 12:47:29,247 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 41 selfloop transitions, 5 changer transitions 3/56 dead transitions. [2023-08-30 12:47:29,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 251 flow [2023-08-30 12:47:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:29,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-08-30 12:47:29,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6525252525252525 [2023-08-30 12:47:29,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-08-30 12:47:29,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-08-30 12:47:29,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:29,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-08-30 12:47:29,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,252 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 96 flow. Second operand 3 states and 323 transitions. [2023-08-30 12:47:29,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 251 flow [2023-08-30 12:47:29,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:47:29,255 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 124 flow [2023-08-30 12:47:29,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-30 12:47:29,257 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-30 12:47:29,257 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 124 flow [2023-08-30 12:47:29,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:29,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:29,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:47:29,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:29,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash -29391894, now seen corresponding path program 1 times [2023-08-30 12:47:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624760358] [2023-08-30 12:47:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:29,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:29,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624760358] [2023-08-30 12:47:29,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624760358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:29,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:29,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:47:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794959252] [2023-08-30 12:47:29,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:29,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:29,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:29,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 165 [2023-08-30 12:47:29,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:29,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 165 [2023-08-30 12:47:29,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:29,431 INFO L130 PetriNetUnfolder]: 167/366 cut-off events. [2023-08-30 12:47:29,432 INFO L131 PetriNetUnfolder]: For 119/131 co-relation queries the response was YES. [2023-08-30 12:47:29,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 366 events. 167/366 cut-off events. For 119/131 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1585 event pairs, 117 based on Foata normal form. 28/380 useless extension candidates. Maximal degree in co-relation 670. Up to 232 conditions per place. [2023-08-30 12:47:29,434 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 32 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-30 12:47:29,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 207 flow [2023-08-30 12:47:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-08-30 12:47:29,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2023-08-30 12:47:29,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-08-30 12:47:29,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-08-30 12:47:29,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:29,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-08-30 12:47:29,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,442 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 124 flow. Second operand 3 states and 312 transitions. [2023-08-30 12:47:29,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 207 flow [2023-08-30 12:47:29,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:47:29,447 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 108 flow [2023-08-30 12:47:29,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-08-30 12:47:29,449 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-30 12:47:29,449 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 108 flow [2023-08-30 12:47:29,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:29,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:29,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:47:29,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:29,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:29,451 INFO L85 PathProgramCache]: Analyzing trace with hash 555874361, now seen corresponding path program 1 times [2023-08-30 12:47:29,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:29,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599943619] [2023-08-30 12:47:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:29,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:29,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:29,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599943619] [2023-08-30 12:47:29,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599943619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:47:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597439541] [2023-08-30 12:47:29,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:29,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:29,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:29,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 165 [2023-08-30 12:47:29,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:29,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 165 [2023-08-30 12:47:29,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:29,637 INFO L130 PetriNetUnfolder]: 70/229 cut-off events. [2023-08-30 12:47:29,637 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 12:47:29,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 229 events. 70/229 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 952 event pairs, 15 based on Foata normal form. 40/269 useless extension candidates. Maximal degree in co-relation 315. Up to 133 conditions per place. [2023-08-30 12:47:29,638 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 21 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-08-30 12:47:29,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 179 flow [2023-08-30 12:47:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2023-08-30 12:47:29,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591919191919192 [2023-08-30 12:47:29,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2023-08-30 12:47:29,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2023-08-30 12:47:29,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:29,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2023-08-30 12:47:29,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,643 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 108 flow. Second operand 3 states and 293 transitions. [2023-08-30 12:47:29,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 179 flow [2023-08-30 12:47:29,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:47:29,646 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 121 flow [2023-08-30 12:47:29,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-08-30 12:47:29,648 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-30 12:47:29,649 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 121 flow [2023-08-30 12:47:29,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:29,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:29,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:47:29,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:29,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash 238706223, now seen corresponding path program 1 times [2023-08-30 12:47:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:29,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375032811] [2023-08-30 12:47:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:29,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:29,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375032811] [2023-08-30 12:47:29,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375032811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:29,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:29,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:47:29,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160131287] [2023-08-30 12:47:29,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:29,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:47:29,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:47:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:47:29,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 165 [2023-08-30 12:47:29,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:29,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 165 [2023-08-30 12:47:29,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:29,793 INFO L130 PetriNetUnfolder]: 66/207 cut-off events. [2023-08-30 12:47:29,794 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-30 12:47:29,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 207 events. 66/207 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 798 event pairs, 50 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 257. Up to 137 conditions per place. [2023-08-30 12:47:29,795 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 22 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-30 12:47:29,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 175 flow [2023-08-30 12:47:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:47:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:47:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2023-08-30 12:47:29,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-08-30 12:47:29,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2023-08-30 12:47:29,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2023-08-30 12:47:29,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:29,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2023-08-30 12:47:29,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,801 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,801 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 121 flow. Second operand 4 states and 374 transitions. [2023-08-30 12:47:29,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 175 flow [2023-08-30 12:47:29,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:47:29,803 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 115 flow [2023-08-30 12:47:29,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-30 12:47:29,805 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 12:47:29,806 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 115 flow [2023-08-30 12:47:29,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:29,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:29,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:47:29,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:29,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:29,807 INFO L85 PathProgramCache]: Analyzing trace with hash -47131797, now seen corresponding path program 1 times [2023-08-30 12:47:29,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:29,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489564590] [2023-08-30 12:47:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:29,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:29,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489564590] [2023-08-30 12:47:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489564590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:29,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:29,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:47:29,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307385159] [2023-08-30 12:47:29,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:29,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:47:29,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:47:29,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:47:29,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 165 [2023-08-30 12:47:29,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:29,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:29,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 165 [2023-08-30 12:47:29,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:30,005 INFO L130 PetriNetUnfolder]: 66/211 cut-off events. [2023-08-30 12:47:30,006 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 12:47:30,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 211 events. 66/211 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 785 event pairs, 9 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 254. Up to 81 conditions per place. [2023-08-30 12:47:30,007 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 39 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2023-08-30 12:47:30,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 263 flow [2023-08-30 12:47:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:47:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:47:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 568 transitions. [2023-08-30 12:47:30,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737373737373738 [2023-08-30 12:47:30,010 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 568 transitions. [2023-08-30 12:47:30,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 568 transitions. [2023-08-30 12:47:30,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:30,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 568 transitions. [2023-08-30 12:47:30,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,013 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,014 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 115 flow. Second operand 6 states and 568 transitions. [2023-08-30 12:47:30,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 263 flow [2023-08-30 12:47:30,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 12:47:30,016 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 127 flow [2023-08-30 12:47:30,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-08-30 12:47:30,016 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-08-30 12:47:30,017 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 127 flow [2023-08-30 12:47:30,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:30,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:30,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:47:30,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:30,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash -116370214, now seen corresponding path program 1 times [2023-08-30 12:47:30,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:30,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153127985] [2023-08-30 12:47:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:30,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:30,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153127985] [2023-08-30 12:47:30,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153127985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:30,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:30,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:47:30,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672746890] [2023-08-30 12:47:30,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:30,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:47:30,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:30,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:47:30,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:47:30,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 165 [2023-08-30 12:47:30,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:30,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 165 [2023-08-30 12:47:30,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:30,121 INFO L130 PetriNetUnfolder]: 64/195 cut-off events. [2023-08-30 12:47:30,121 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-08-30 12:47:30,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 195 events. 64/195 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 707 event pairs, 18 based on Foata normal form. 4/199 useless extension candidates. Maximal degree in co-relation 286. Up to 118 conditions per place. [2023-08-30 12:47:30,123 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 30 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-30 12:47:30,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 215 flow [2023-08-30 12:47:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:47:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:47:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-08-30 12:47:30,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603030303030303 [2023-08-30 12:47:30,125 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-08-30 12:47:30,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-08-30 12:47:30,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:30,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-08-30 12:47:30,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,127 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,128 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 127 flow. Second operand 4 states and 398 transitions. [2023-08-30 12:47:30,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 215 flow [2023-08-30 12:47:30,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 207 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 12:47:30,129 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 123 flow [2023-08-30 12:47:30,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-08-30 12:47:30,130 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-08-30 12:47:30,130 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 123 flow [2023-08-30 12:47:30,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:30,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:30,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:47:30,131 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:30,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash 472354978, now seen corresponding path program 1 times [2023-08-30 12:47:30,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900645302] [2023-08-30 12:47:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:30,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:30,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:30,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900645302] [2023-08-30 12:47:30,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900645302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:30,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:30,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:47:30,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035235390] [2023-08-30 12:47:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:30,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:47:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:47:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:47:30,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 165 [2023-08-30 12:47:30,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:30,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 165 [2023-08-30 12:47:30,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:30,295 INFO L130 PetriNetUnfolder]: 66/203 cut-off events. [2023-08-30 12:47:30,295 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 12:47:30,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 203 events. 66/203 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 718 event pairs, 33 based on Foata normal form. 4/207 useless extension candidates. Maximal degree in co-relation 289. Up to 72 conditions per place. [2023-08-30 12:47:30,297 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 38 selfloop transitions, 5 changer transitions 1/50 dead transitions. [2023-08-30 12:47:30,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 263 flow [2023-08-30 12:47:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:47:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:47:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-08-30 12:47:30,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2023-08-30 12:47:30,299 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-08-30 12:47:30,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-08-30 12:47:30,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:30,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-08-30 12:47:30,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,303 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,304 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 123 flow. Second operand 6 states and 564 transitions. [2023-08-30 12:47:30,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 263 flow [2023-08-30 12:47:30,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 247 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 12:47:30,306 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 115 flow [2023-08-30 12:47:30,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-08-30 12:47:30,306 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-08-30 12:47:30,307 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 115 flow [2023-08-30 12:47:30,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:30,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:30,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:47:30,308 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:30,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash 575456662, now seen corresponding path program 1 times [2023-08-30 12:47:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:30,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051510864] [2023-08-30 12:47:30,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:30,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:30,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:30,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051510864] [2023-08-30 12:47:30,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051510864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:30,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:30,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:47:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240439020] [2023-08-30 12:47:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:30,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:30,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:30,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 165 [2023-08-30 12:47:30,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:30,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 165 [2023-08-30 12:47:30,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:30,402 INFO L130 PetriNetUnfolder]: 59/184 cut-off events. [2023-08-30 12:47:30,403 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 12:47:30,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 184 events. 59/184 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 659 event pairs, 55 based on Foata normal form. 4/188 useless extension candidates. Maximal degree in co-relation 259. Up to 150 conditions per place. [2023-08-30 12:47:30,404 INFO L137 encePairwiseOnDemand]: 163/165 looper letters, 17 selfloop transitions, 1 changer transitions 5/30 dead transitions. [2023-08-30 12:47:30,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 30 transitions, 157 flow [2023-08-30 12:47:30,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:30,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-30 12:47:30,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-08-30 12:47:30,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-30 12:47:30,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-30 12:47:30,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:30,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-30 12:47:30,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,408 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 115 flow. Second operand 3 states and 297 transitions. [2023-08-30 12:47:30,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 30 transitions, 157 flow [2023-08-30 12:47:30,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 30 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 12:47:30,410 INFO L231 Difference]: Finished difference. Result has 43 places, 25 transitions, 89 flow [2023-08-30 12:47:30,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=43, PETRI_TRANSITIONS=25} [2023-08-30 12:47:30,410 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-30 12:47:30,410 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 25 transitions, 89 flow [2023-08-30 12:47:30,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:30,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:30,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:47:30,411 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:47:30,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:30,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1850142390, now seen corresponding path program 1 times [2023-08-30 12:47:30,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:30,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55450674] [2023-08-30 12:47:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:30,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:30,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:30,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55450674] [2023-08-30 12:47:30,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55450674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:30,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:30,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:47:30,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843815699] [2023-08-30 12:47:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:30,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:47:30,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:47:30,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:47:30,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 165 [2023-08-30 12:47:30,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 25 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:30,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 165 [2023-08-30 12:47:30,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:30,518 INFO L130 PetriNetUnfolder]: 37/118 cut-off events. [2023-08-30 12:47:30,519 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 12:47:30,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 118 events. 37/118 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 327 event pairs, 25 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 279. Up to 72 conditions per place. [2023-08-30 12:47:30,519 INFO L137 encePairwiseOnDemand]: 162/165 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-30 12:47:30,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 153 flow [2023-08-30 12:47:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:47:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:47:30,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2023-08-30 12:47:30,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5848484848484848 [2023-08-30 12:47:30,521 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 386 transitions. [2023-08-30 12:47:30,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 386 transitions. [2023-08-30 12:47:30,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:30,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 386 transitions. [2023-08-30 12:47:30,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,525 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,525 INFO L175 Difference]: Start difference. First operand has 43 places, 25 transitions, 89 flow. Second operand 4 states and 386 transitions. [2023-08-30 12:47:30,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 153 flow [2023-08-30 12:47:30,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 148 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:47:30,526 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-30 12:47:30,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-30 12:47:30,527 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-08-30 12:47:30,527 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-30 12:47:30,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:30,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 12:47:30,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 12:47:30,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 12:47:30,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 12:47:30,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 12:47:30,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 12:47:30,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 12:47:30,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 12:47:30,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-30 12:47:30,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-30 12:47:30,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 12:47:30,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 12:47:30,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 12:47:30,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 12:47:30,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 12:47:30,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 12:47:30,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 12:47:30,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 12:47:30,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:47:30,533 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:30,539 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:47:30,539 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:47:30,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:47:30 BasicIcfg [2023-08-30 12:47:30,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:47:30,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:47:30,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:47:30,543 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:47:30,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:47:24" (3/4) ... [2023-08-30 12:47:30,546 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:47:30,550 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:47:30,551 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:47:30,555 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 12:47:30,555 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:47:30,555 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:47:30,555 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:47:30,583 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:47:30,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:47:30,584 INFO L158 Benchmark]: Toolchain (without parser) took 6881.91ms. Allocated memory was 79.7MB in the beginning and 163.6MB in the end (delta: 83.9MB). Free memory was 30.6MB in the beginning and 78.2MB in the end (delta: -47.6MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-08-30 12:47:30,584 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:47:30,585 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.73ms. Allocated memory is still 79.7MB. Free memory was 30.5MB in the beginning and 46.0MB in the end (delta: -15.4MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2023-08-30 12:47:30,585 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.47ms. Allocated memory is still 79.7MB. Free memory was 46.0MB in the beginning and 43.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:47:30,585 INFO L158 Benchmark]: Boogie Preprocessor took 50.07ms. Allocated memory is still 79.7MB. Free memory was 43.9MB in the beginning and 42.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:47:30,585 INFO L158 Benchmark]: RCFGBuilder took 501.26ms. Allocated memory was 79.7MB in the beginning and 113.2MB in the end (delta: 33.6MB). Free memory was 42.5MB in the beginning and 92.2MB in the end (delta: -49.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 12:47:30,586 INFO L158 Benchmark]: TraceAbstraction took 5745.67ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 91.6MB in the beginning and 81.4MB in the end (delta: 10.2MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2023-08-30 12:47:30,586 INFO L158 Benchmark]: Witness Printer took 40.62ms. Allocated memory is still 163.6MB. Free memory was 81.4MB in the beginning and 78.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:47:30,587 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 79.7MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.73ms. Allocated memory is still 79.7MB. Free memory was 30.5MB in the beginning and 46.0MB in the end (delta: -15.4MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.47ms. Allocated memory is still 79.7MB. Free memory was 46.0MB in the beginning and 43.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.07ms. Allocated memory is still 79.7MB. Free memory was 43.9MB in the beginning and 42.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 501.26ms. Allocated memory was 79.7MB in the beginning and 113.2MB in the end (delta: 33.6MB). Free memory was 42.5MB in the beginning and 92.2MB in the end (delta: -49.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5745.67ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 91.6MB in the beginning and 81.4MB in the end (delta: 10.2MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. * Witness Printer took 40.62ms. Allocated memory is still 163.6MB. Free memory was 81.4MB in the beginning and 78.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 96 PlacesBefore, 40 PlacesAfterwards, 89 TransitionsBefore, 33 TransitionsAfterwards, 1516 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 61 TotalNumberOfCompositions, 6367 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3454, independent: 3146, independent conditional: 0, independent unconditional: 3146, dependent: 308, dependent conditional: 0, dependent unconditional: 308, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 852, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3454, independent: 2332, independent conditional: 0, independent unconditional: 2332, dependent: 270, dependent conditional: 0, dependent unconditional: 270, unknown: 852, unknown conditional: 0, unknown unconditional: 852] , Statistics on independence cache: Total cache size (in pairs): 199, Positive cache size: 178, Positive conditional cache size: 0, Positive unconditional cache size: 178, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: 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, 150 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: 5.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 461 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 281 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 754 IncrementalHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 53 mSDtfsCounter, 754 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=7, InterpolantAutomatonStates: 42, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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! [2023-08-30 12:47:30,605 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