./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.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-deagle/arithmetic_prog_bad.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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --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 15:59:38,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:59:38,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:59:38,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:59:38,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:59:38,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:59:38,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:59:38,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:59:38,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:59:38,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:59:38,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:59:38,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:59:38,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:59:38,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:59:38,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:59:38,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:59:38,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:59:38,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:59:38,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:59:38,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:59:38,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:59:38,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:59:38,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:59:38,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:59:38,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:59:38,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:59:38,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:59:38,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:59:38,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:59:38,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:59:38,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:59:38,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:59:38,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:59:38,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:59:38,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:59:38,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:59:38,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:59:38,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:59:38,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:59:38,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:59:38,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:59:38,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:59:39,020 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:59:39,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:59:39,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:59:39,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:59:39,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:59:39,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:59:39,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:59:39,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:59:39,023 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:59:39,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:59:39,024 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:59:39,025 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:59:39,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:59:39,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:59:39,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:59:39,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:59:39,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:59:39,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:59:39,026 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:59:39,026 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:59:39,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:59:39,026 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:59:39,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:59:39,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:59:39,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:59:39,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:59:39,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:59:39,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:59:39,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:59:39,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:59:39,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:59:39,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:59:39,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:59:39,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:59:39,029 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:59:39,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:59:39,029 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:59:39,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:59:39,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:59:39,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:59:39,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:59:39,312 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:59:39,313 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:59:39,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-30 15:59:40,561 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:59:40,842 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:59:40,843 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-08-30 15:59:40,871 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1384c28/1e68e337eea24cf48e6afbb47c50abff/FLAGade356435 [2023-08-30 15:59:40,882 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1384c28/1e68e337eea24cf48e6afbb47c50abff [2023-08-30 15:59:40,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:59:40,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:59:40,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:59:40,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:59:40,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:59:40,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:59:40" (1/1) ... [2023-08-30 15:59:40,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412d0479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:40, skipping insertion in model container [2023-08-30 15:59:40,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:59:40" (1/1) ... [2023-08-30 15:59:40,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:59:40,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:59:41,272 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-08-30 15:59:41,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:59:41,316 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:59:41,393 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-08-30 15:59:41,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:59:41,459 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:59:41,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41 WrapperNode [2023-08-30 15:59:41,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:59:41,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:59:41,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:59:41,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:59:41,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,525 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-08-30 15:59:41,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:59:41,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:59:41,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:59:41,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:59:41,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:59:41,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:59:41,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:59:41,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:59:41,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (1/1) ... [2023-08-30 15:59:41,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:59:41,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:59:41,622 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 15:59:41,654 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 15:59:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:59:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:59:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 15:59:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:59:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:59:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:59:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:59:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:59:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:59:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 15:59:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:59:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:59:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:59:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:59:41,673 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 15:59:41,836 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:59:41,838 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:59:42,094 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:59:42,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:59:42,101 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:59:42,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:59:42 BoogieIcfgContainer [2023-08-30 15:59:42,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:59:42,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:59:42,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:59:42,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:59:42,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:59:40" (1/3) ... [2023-08-30 15:59:42,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498e5414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:59:42, skipping insertion in model container [2023-08-30 15:59:42,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:41" (2/3) ... [2023-08-30 15:59:42,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498e5414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:59:42, skipping insertion in model container [2023-08-30 15:59:42,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:59:42" (3/3) ... [2023-08-30 15:59:42,110 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-08-30 15:59:42,117 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:59:42,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:59:42,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 15:59:42,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:59:42,192 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 15:59:42,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 146 transitions, 308 flow [2023-08-30 15:59:42,265 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2023-08-30 15:59:42,266 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:59:42,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 144 events. 10/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2023-08-30 15:59:42,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 146 transitions, 308 flow [2023-08-30 15:59:42,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 129 transitions, 267 flow [2023-08-30 15:59:42,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:59:42,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 129 transitions, 267 flow [2023-08-30 15:59:42,288 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 129 transitions, 267 flow [2023-08-30 15:59:42,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 129 transitions, 267 flow [2023-08-30 15:59:42,324 INFO L130 PetriNetUnfolder]: 8/129 cut-off events. [2023-08-30 15:59:42,325 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:59:42,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 129 events. 8/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-08-30 15:59:42,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 3074 [2023-08-30 15:59:47,727 INFO L134 LiptonReduction]: Checked pairs total: 6805 [2023-08-30 15:59:47,727 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-30 15:59:47,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:59:47,744 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;@28407172, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:59:47,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 15:59:47,751 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 15:59:47,751 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:59:47,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:47,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:59:47,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:47,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1191747266, now seen corresponding path program 1 times [2023-08-30 15:59:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906765946] [2023-08-30 15:59:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:47,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:47,934 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 15:59:47,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:47,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906765946] [2023-08-30 15:59:47,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906765946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:47,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:47,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:59:47,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407649714] [2023-08-30 15:59:47,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 15:59:47,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:47,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 15:59:47,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 15:59:47,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 255 [2023-08-30 15:59:47,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:47,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:47,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 255 [2023-08-30 15:59:47,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:48,128 INFO L130 PetriNetUnfolder]: 345/594 cut-off events. [2023-08-30 15:59:48,129 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-30 15:59:48,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 594 events. 345/594 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2578 event pairs, 261 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 1074. Up to 561 conditions per place. [2023-08-30 15:59:48,136 INFO L137 encePairwiseOnDemand]: 254/255 looper letters, 28 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-08-30 15:59:48,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 135 flow [2023-08-30 15:59:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 15:59:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 15:59:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 301 transitions. [2023-08-30 15:59:48,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5901960784313726 [2023-08-30 15:59:48,152 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 301 transitions. [2023-08-30 15:59:48,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 301 transitions. [2023-08-30 15:59:48,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:48,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 301 transitions. [2023-08-30 15:59:48,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,164 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,165 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 81 flow. Second operand 2 states and 301 transitions. [2023-08-30 15:59:48,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 135 flow [2023-08-30 15:59:48,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:59:48,169 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 74 flow [2023-08-30 15:59:48,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-08-30 15:59:48,174 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-08-30 15:59:48,174 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 74 flow [2023-08-30 15:59:48,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:48,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:48,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:59:48,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:48,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:48,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1710452295, now seen corresponding path program 1 times [2023-08-30 15:59:48,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:48,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228306174] [2023-08-30 15:59:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:48,314 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 15:59:48,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:48,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228306174] [2023-08-30 15:59:48,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228306174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:48,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:48,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:59:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144072175] [2023-08-30 15:59:48,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:48,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:59:48,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:48,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:59:48,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:59:48,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-08-30 15:59:48,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:48,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-08-30 15:59:48,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:48,615 INFO L130 PetriNetUnfolder]: 1041/1685 cut-off events. [2023-08-30 15:59:48,615 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 15:59:48,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3349 conditions, 1685 events. 1041/1685 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7432 event pairs, 260 based on Foata normal form. 0/1087 useless extension candidates. Maximal degree in co-relation 3346. Up to 643 conditions per place. [2023-08-30 15:59:48,624 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 77 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2023-08-30 15:59:48,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 99 transitions, 397 flow [2023-08-30 15:59:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:59:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:59:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 730 transitions. [2023-08-30 15:59:48,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2023-08-30 15:59:48,635 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 730 transitions. [2023-08-30 15:59:48,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 730 transitions. [2023-08-30 15:59:48,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:48,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 730 transitions. [2023-08-30 15:59:48,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,643 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,643 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 74 flow. Second operand 5 states and 730 transitions. [2023-08-30 15:59:48,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 99 transitions, 397 flow [2023-08-30 15:59:48,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:59:48,646 INFO L231 Difference]: Finished difference. Result has 44 places, 53 transitions, 230 flow [2023-08-30 15:59:48,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2023-08-30 15:59:48,647 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-08-30 15:59:48,647 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 230 flow [2023-08-30 15:59:48,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:48,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:48,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:59:48,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:48,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1710452403, now seen corresponding path program 1 times [2023-08-30 15:59:48,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:48,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480828461] [2023-08-30 15:59:48,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:48,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:59:48,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:48,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480828461] [2023-08-30 15:59:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480828461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:48,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:48,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:59:48,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77085510] [2023-08-30 15:59:48,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:48,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:59:48,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:48,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:59:48,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:59:48,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 255 [2023-08-30 15:59:48,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:48,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:48,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 255 [2023-08-30 15:59:48,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:49,068 INFO L130 PetriNetUnfolder]: 1487/2394 cut-off events. [2023-08-30 15:59:49,068 INFO L131 PetriNetUnfolder]: For 1212/1212 co-relation queries the response was YES. [2023-08-30 15:59:49,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6666 conditions, 2394 events. 1487/2394 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11403 event pairs, 230 based on Foata normal form. 152/2045 useless extension candidates. Maximal degree in co-relation 6659. Up to 1202 conditions per place. [2023-08-30 15:59:49,083 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 103 selfloop transitions, 43 changer transitions 0/148 dead transitions. [2023-08-30 15:59:49,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 148 transitions, 925 flow [2023-08-30 15:59:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:59:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:59:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-08-30 15:59:49,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5749019607843138 [2023-08-30 15:59:49,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-08-30 15:59:49,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-08-30 15:59:49,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:49,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-08-30 15:59:49,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,091 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,091 INFO L175 Difference]: Start difference. First operand has 44 places, 53 transitions, 230 flow. Second operand 5 states and 733 transitions. [2023-08-30 15:59:49,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 148 transitions, 925 flow [2023-08-30 15:59:49,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 148 transitions, 925 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:59:49,100 INFO L231 Difference]: Finished difference. Result has 52 places, 91 transitions, 706 flow [2023-08-30 15:59:49,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=706, PETRI_PLACES=52, PETRI_TRANSITIONS=91} [2023-08-30 15:59:49,101 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-08-30 15:59:49,101 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 91 transitions, 706 flow [2023-08-30 15:59:49,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:49,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:49,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:59:49,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:49,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:49,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1484417982, now seen corresponding path program 1 times [2023-08-30 15:59:49,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:49,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856345035] [2023-08-30 15:59:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:49,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:49,156 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 15:59:49,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:49,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856345035] [2023-08-30 15:59:49,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856345035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:49,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:49,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:59:49,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888871933] [2023-08-30 15:59:49,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:49,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:59:49,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:59:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:59:49,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-08-30 15:59:49,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 91 transitions, 706 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:49,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-08-30 15:59:49,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:49,491 INFO L130 PetriNetUnfolder]: 1778/3057 cut-off events. [2023-08-30 15:59:49,492 INFO L131 PetriNetUnfolder]: For 7271/7667 co-relation queries the response was YES. [2023-08-30 15:59:49,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11184 conditions, 3057 events. 1778/3057 cut-off events. For 7271/7667 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17436 event pairs, 553 based on Foata normal form. 92/2559 useless extension candidates. Maximal degree in co-relation 11173. Up to 1779 conditions per place. [2023-08-30 15:59:49,517 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 109 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2023-08-30 15:59:49,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 139 transitions, 1300 flow [2023-08-30 15:59:49,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:59:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:59:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-08-30 15:59:49,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2023-08-30 15:59:49,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-08-30 15:59:49,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-08-30 15:59:49,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:49,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-08-30 15:59:49,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,523 INFO L175 Difference]: Start difference. First operand has 52 places, 91 transitions, 706 flow. Second operand 3 states and 447 transitions. [2023-08-30 15:59:49,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 139 transitions, 1300 flow [2023-08-30 15:59:49,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 139 transitions, 1300 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:59:49,535 INFO L231 Difference]: Finished difference. Result has 55 places, 99 transitions, 861 flow [2023-08-30 15:59:49,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=861, PETRI_PLACES=55, PETRI_TRANSITIONS=99} [2023-08-30 15:59:49,536 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-08-30 15:59:49,536 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 99 transitions, 861 flow [2023-08-30 15:59:49,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:49,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:49,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:59:49,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:49,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:49,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1288775049, now seen corresponding path program 1 times [2023-08-30 15:59:49,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:49,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333692602] [2023-08-30 15:59:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:49,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:49,569 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 15:59:49,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:49,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333692602] [2023-08-30 15:59:49,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333692602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:49,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:49,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:59:49,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957175840] [2023-08-30 15:59:49,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:49,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:59:49,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:49,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:59:49,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:59:49,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 255 [2023-08-30 15:59:49,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 99 transitions, 861 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:49,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 255 [2023-08-30 15:59:49,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:49,855 INFO L130 PetriNetUnfolder]: 1166/1959 cut-off events. [2023-08-30 15:59:49,855 INFO L131 PetriNetUnfolder]: For 5347/5717 co-relation queries the response was YES. [2023-08-30 15:59:49,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7770 conditions, 1959 events. 1166/1959 cut-off events. For 5347/5717 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9404 event pairs, 252 based on Foata normal form. 128/1676 useless extension candidates. Maximal degree in co-relation 7757. Up to 1521 conditions per place. [2023-08-30 15:59:49,869 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 88 selfloop transitions, 12 changer transitions 3/114 dead transitions. [2023-08-30 15:59:49,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 114 transitions, 1128 flow [2023-08-30 15:59:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:59:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:59:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-08-30 15:59:49,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5699346405228758 [2023-08-30 15:59:49,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-08-30 15:59:49,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-08-30 15:59:49,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:49,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-08-30 15:59:49,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,876 INFO L175 Difference]: Start difference. First operand has 55 places, 99 transitions, 861 flow. Second operand 3 states and 436 transitions. [2023-08-30 15:59:49,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 114 transitions, 1128 flow [2023-08-30 15:59:49,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 114 transitions, 1123 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:59:49,885 INFO L231 Difference]: Finished difference. Result has 58 places, 95 transitions, 860 flow [2023-08-30 15:59:49,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=860, PETRI_PLACES=58, PETRI_TRANSITIONS=95} [2023-08-30 15:59:49,885 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 15:59:49,886 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 95 transitions, 860 flow [2023-08-30 15:59:49,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:49,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:49,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:59:49,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:49,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1476933034, now seen corresponding path program 1 times [2023-08-30 15:59:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:49,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606299759] [2023-08-30 15:59:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:49,956 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 15:59:49,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:49,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606299759] [2023-08-30 15:59:49,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606299759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:49,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:49,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:59:49,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712777718] [2023-08-30 15:59:49,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:49,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:59:49,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:49,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:59:49,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:59:49,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-08-30 15:59:49,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 95 transitions, 860 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:49,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:49,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-08-30 15:59:49,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:50,114 INFO L130 PetriNetUnfolder]: 407/866 cut-off events. [2023-08-30 15:59:50,114 INFO L131 PetriNetUnfolder]: For 1455/1455 co-relation queries the response was YES. [2023-08-30 15:59:50,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 866 events. 407/866 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4310 event pairs, 124 based on Foata normal form. 52/822 useless extension candidates. Maximal degree in co-relation 2985. Up to 407 conditions per place. [2023-08-30 15:59:50,120 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 29 selfloop transitions, 16 changer transitions 0/55 dead transitions. [2023-08-30 15:59:50,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 431 flow [2023-08-30 15:59:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:59:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:59:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-30 15:59:50,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-08-30 15:59:50,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-30 15:59:50,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-30 15:59:50,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:50,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-30 15:59:50,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,126 INFO L175 Difference]: Start difference. First operand has 58 places, 95 transitions, 860 flow. Second operand 3 states and 420 transitions. [2023-08-30 15:59:50,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 431 flow [2023-08-30 15:59:50,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 342 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-30 15:59:50,135 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 259 flow [2023-08-30 15:59:50,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-30 15:59:50,136 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2023-08-30 15:59:50,136 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 259 flow [2023-08-30 15:59:50,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:50,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 15:59:50,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:59:50,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:50,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash 51057020, now seen corresponding path program 1 times [2023-08-30 15:59:50,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:50,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019966826] [2023-08-30 15:59:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:50,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:59:50,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:50,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019966826] [2023-08-30 15:59:50,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019966826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:50,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:59:50,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008106473] [2023-08-30 15:59:50,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:50,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:59:50,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:50,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:59:50,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:59:50,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 255 [2023-08-30 15:59:50,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:50,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 255 [2023-08-30 15:59:50,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:50,391 INFO L130 PetriNetUnfolder]: 380/763 cut-off events. [2023-08-30 15:59:50,391 INFO L131 PetriNetUnfolder]: For 630/630 co-relation queries the response was YES. [2023-08-30 15:59:50,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 763 events. 380/763 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3215 event pairs, 81 based on Foata normal form. 26/745 useless extension candidates. Maximal degree in co-relation 2273. Up to 304 conditions per place. [2023-08-30 15:59:50,396 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 57 selfloop transitions, 11 changer transitions 7/77 dead transitions. [2023-08-30 15:59:50,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 492 flow [2023-08-30 15:59:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:59:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:59:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 820 transitions. [2023-08-30 15:59:50,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-08-30 15:59:50,399 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 820 transitions. [2023-08-30 15:59:50,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 820 transitions. [2023-08-30 15:59:50,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:50,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 820 transitions. [2023-08-30 15:59:50,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,404 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,404 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 259 flow. Second operand 6 states and 820 transitions. [2023-08-30 15:59:50,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 492 flow [2023-08-30 15:59:50,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:59:50,407 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 265 flow [2023-08-30 15:59:50,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-08-30 15:59:50,408 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-08-30 15:59:50,408 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 265 flow [2023-08-30 15:59:50,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:50,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:50,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:59:50,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:50,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:50,410 INFO L85 PathProgramCache]: Analyzing trace with hash 15479413, now seen corresponding path program 1 times [2023-08-30 15:59:50,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:50,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347560302] [2023-08-30 15:59:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:50,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:50,470 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 15:59:50,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347560302] [2023-08-30 15:59:50,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347560302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:50,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:50,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:59:50,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424723937] [2023-08-30 15:59:50,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:50,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:59:50,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:50,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:59:50,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:59:50,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 255 [2023-08-30 15:59:50,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:50,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 255 [2023-08-30 15:59:50,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:50,656 INFO L130 PetriNetUnfolder]: 465/956 cut-off events. [2023-08-30 15:59:50,656 INFO L131 PetriNetUnfolder]: For 1159/1159 co-relation queries the response was YES. [2023-08-30 15:59:50,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2839 conditions, 956 events. 465/956 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4382 event pairs, 90 based on Foata normal form. 22/934 useless extension candidates. Maximal degree in co-relation 2826. Up to 335 conditions per place. [2023-08-30 15:59:50,661 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 62 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2023-08-30 15:59:50,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 571 flow [2023-08-30 15:59:50,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:59:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:59:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 822 transitions. [2023-08-30 15:59:50,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2023-08-30 15:59:50,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 822 transitions. [2023-08-30 15:59:50,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 822 transitions. [2023-08-30 15:59:50,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:50,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 822 transitions. [2023-08-30 15:59:50,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,670 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,670 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 265 flow. Second operand 6 states and 822 transitions. [2023-08-30 15:59:50,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 571 flow [2023-08-30 15:59:50,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 545 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:59:50,675 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 341 flow [2023-08-30 15:59:50,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-08-30 15:59:50,675 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 15:59:50,676 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 341 flow [2023-08-30 15:59:50,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:50,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:50,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:59:50,677 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:50,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1990762071, now seen corresponding path program 1 times [2023-08-30 15:59:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:50,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304581972] [2023-08-30 15:59:50,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:50,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:50,724 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 15:59:50,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304581972] [2023-08-30 15:59:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304581972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:50,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:50,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:59:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329601011] [2023-08-30 15:59:50,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:50,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:59:50,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:50,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:59:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:59:50,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-08-30 15:59:50,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:50,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-08-30 15:59:50,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:50,865 INFO L130 PetriNetUnfolder]: 414/921 cut-off events. [2023-08-30 15:59:50,866 INFO L131 PetriNetUnfolder]: For 1226/1230 co-relation queries the response was YES. [2023-08-30 15:59:50,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 921 events. 414/921 cut-off events. For 1226/1230 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4693 event pairs, 234 based on Foata normal form. 18/889 useless extension candidates. Maximal degree in co-relation 2784. Up to 630 conditions per place. [2023-08-30 15:59:50,872 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 50 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-30 15:59:50,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 514 flow [2023-08-30 15:59:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:59:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:59:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-30 15:59:50,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2023-08-30 15:59:50,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-30 15:59:50,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-30 15:59:50,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:50,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-30 15:59:50,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,878 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 341 flow. Second operand 3 states and 441 transitions. [2023-08-30 15:59:50,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 514 flow [2023-08-30 15:59:50,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 474 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 15:59:50,883 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 322 flow [2023-08-30 15:59:50,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-30 15:59:50,883 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-08-30 15:59:50,884 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 322 flow [2023-08-30 15:59:50,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:50,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:50,884 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:50,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 15:59:50,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:50,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:50,885 INFO L85 PathProgramCache]: Analyzing trace with hash 902276768, now seen corresponding path program 1 times [2023-08-30 15:59:50,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:50,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520803275] [2023-08-30 15:59:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:50,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:59:50,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:50,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520803275] [2023-08-30 15:59:50,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520803275] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:59:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391844554] [2023-08-30 15:59:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:50,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:59:50,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:59:50,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:59:50,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:59:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:51,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:59:51,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:59:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:59:51,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:59:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:59:51,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391844554] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:59:51,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:59:51,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-30 15:59:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133238796] [2023-08-30 15:59:51,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:59:51,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 15:59:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 15:59:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 15:59:51,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 255 [2023-08-30 15:59:51,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 322 flow. Second operand has 10 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:51,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:51,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 255 [2023-08-30 15:59:51,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:51,518 INFO L130 PetriNetUnfolder]: 440/943 cut-off events. [2023-08-30 15:59:51,518 INFO L131 PetriNetUnfolder]: For 1034/1034 co-relation queries the response was YES. [2023-08-30 15:59:51,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 943 events. 440/943 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4528 event pairs, 106 based on Foata normal form. 48/947 useless extension candidates. Maximal degree in co-relation 2831. Up to 395 conditions per place. [2023-08-30 15:59:51,529 INFO L137 encePairwiseOnDemand]: 237/255 looper letters, 51 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2023-08-30 15:59:51,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 542 flow [2023-08-30 15:59:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:59:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:59:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-08-30 15:59:51,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029411764705882 [2023-08-30 15:59:51,532 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-08-30 15:59:51,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-08-30 15:59:51,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:51,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-08-30 15:59:51,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:51,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:51,539 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:51,539 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 322 flow. Second operand 8 states and 1026 transitions. [2023-08-30 15:59:51,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 542 flow [2023-08-30 15:59:51,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:59:51,543 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 357 flow [2023-08-30 15:59:51,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-08-30 15:59:51,545 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-08-30 15:59:51,545 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 357 flow [2023-08-30 15:59:51,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:51,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:51,546 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:51,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:59:51,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 15:59:51,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:51,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1885524128, now seen corresponding path program 1 times [2023-08-30 15:59:51,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:51,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868175977] [2023-08-30 15:59:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:51,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:59:51,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:51,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868175977] [2023-08-30 15:59:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868175977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:51,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:59:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829801382] [2023-08-30 15:59:51,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:51,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:59:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:59:51,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:59:51,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-08-30 15:59:51,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:51,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:51,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-08-30 15:59:51,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:52,074 INFO L130 PetriNetUnfolder]: 404/865 cut-off events. [2023-08-30 15:59:52,074 INFO L131 PetriNetUnfolder]: For 930/930 co-relation queries the response was YES. [2023-08-30 15:59:52,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 865 events. 404/865 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3988 event pairs, 107 based on Foata normal form. 20/841 useless extension candidates. Maximal degree in co-relation 2854. Up to 332 conditions per place. [2023-08-30 15:59:52,081 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 53 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2023-08-30 15:59:52,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 556 flow [2023-08-30 15:59:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:59:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:59:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-08-30 15:59:52,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2023-08-30 15:59:52,085 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-08-30 15:59:52,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-08-30 15:59:52,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:52,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-08-30 15:59:52,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,093 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,093 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 357 flow. Second operand 8 states and 1032 transitions. [2023-08-30 15:59:52,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 556 flow [2023-08-30 15:59:52,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 518 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 15:59:52,097 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 321 flow [2023-08-30 15:59:52,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=321, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-08-30 15:59:52,098 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-08-30 15:59:52,098 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 321 flow [2023-08-30 15:59:52,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:52,099 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:52,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 15:59:52,099 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:52,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:52,100 INFO L85 PathProgramCache]: Analyzing trace with hash -471659345, now seen corresponding path program 1 times [2023-08-30 15:59:52,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:52,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335922379] [2023-08-30 15:59:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:52,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:59:52,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:52,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335922379] [2023-08-30 15:59:52,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335922379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:52,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:52,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:59:52,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515776005] [2023-08-30 15:59:52,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:52,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:59:52,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:52,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:59:52,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:59:52,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 255 [2023-08-30 15:59:52,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:52,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 255 [2023-08-30 15:59:52,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:52,256 INFO L130 PetriNetUnfolder]: 321/734 cut-off events. [2023-08-30 15:59:52,256 INFO L131 PetriNetUnfolder]: For 776/778 co-relation queries the response was YES. [2023-08-30 15:59:52,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 734 events. 321/734 cut-off events. For 776/778 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3371 event pairs, 148 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 2361. Up to 350 conditions per place. [2023-08-30 15:59:52,260 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 47 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-08-30 15:59:52,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 506 flow [2023-08-30 15:59:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:59:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:59:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-08-30 15:59:52,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2023-08-30 15:59:52,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-08-30 15:59:52,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-08-30 15:59:52,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:52,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-08-30 15:59:52,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,266 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 321 flow. Second operand 3 states and 432 transitions. [2023-08-30 15:59:52,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 506 flow [2023-08-30 15:59:52,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 465 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 15:59:52,269 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 283 flow [2023-08-30 15:59:52,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-08-30 15:59:52,271 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 15:59:52,271 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 283 flow [2023-08-30 15:59:52,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:52,272 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:52,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:59:52,272 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:52,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2126348470, now seen corresponding path program 1 times [2023-08-30 15:59:52,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:52,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727620902] [2023-08-30 15:59:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:52,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:59:52,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:52,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727620902] [2023-08-30 15:59:52,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727620902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:52,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:52,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:59:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583767703] [2023-08-30 15:59:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:52,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:59:52,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:52,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:59:52,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:59:52,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-08-30 15:59:52,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:52,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-08-30 15:59:52,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:52,426 INFO L130 PetriNetUnfolder]: 302/669 cut-off events. [2023-08-30 15:59:52,427 INFO L131 PetriNetUnfolder]: For 876/878 co-relation queries the response was YES. [2023-08-30 15:59:52,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 669 events. 302/669 cut-off events. For 876/878 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2937 event pairs, 58 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 2111. Up to 524 conditions per place. [2023-08-30 15:59:52,430 INFO L137 encePairwiseOnDemand]: 253/255 looper letters, 42 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 15:59:52,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 414 flow [2023-08-30 15:59:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:59:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:59:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-30 15:59:52,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607843137254902 [2023-08-30 15:59:52,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-30 15:59:52,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-30 15:59:52,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:52,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-30 15:59:52,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,435 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 283 flow. Second operand 3 states and 429 transitions. [2023-08-30 15:59:52,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 414 flow [2023-08-30 15:59:52,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:59:52,438 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 272 flow [2023-08-30 15:59:52,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2023-08-30 15:59:52,438 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 15:59:52,438 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 272 flow [2023-08-30 15:59:52,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:52,439 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:52,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:59:52,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:52,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:52,439 INFO L85 PathProgramCache]: Analyzing trace with hash -495404400, now seen corresponding path program 1 times [2023-08-30 15:59:52,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:52,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887881020] [2023-08-30 15:59:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:52,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:59:52,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:52,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887881020] [2023-08-30 15:59:52,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887881020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:52,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:59:52,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:59:52,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059838557] [2023-08-30 15:59:52,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:52,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:59:52,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:59:52,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:59:52,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 255 [2023-08-30 15:59:52,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:52,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 255 [2023-08-30 15:59:52,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:52,570 INFO L130 PetriNetUnfolder]: 283/616 cut-off events. [2023-08-30 15:59:52,571 INFO L131 PetriNetUnfolder]: For 748/750 co-relation queries the response was YES. [2023-08-30 15:59:52,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 616 events. 283/616 cut-off events. For 748/750 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2574 event pairs, 76 based on Foata normal form. 2/614 useless extension candidates. Maximal degree in co-relation 1909. Up to 371 conditions per place. [2023-08-30 15:59:52,573 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 34 selfloop transitions, 4 changer transitions 5/53 dead transitions. [2023-08-30 15:59:52,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 403 flow [2023-08-30 15:59:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:59:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:59:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-08-30 15:59:52,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581699346405229 [2023-08-30 15:59:52,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-08-30 15:59:52,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-08-30 15:59:52,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:52,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-08-30 15:59:52,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,578 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 272 flow. Second operand 3 states and 427 transitions. [2023-08-30 15:59:52,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 403 flow [2023-08-30 15:59:52,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:59:52,581 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 275 flow [2023-08-30 15:59:52,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-08-30 15:59:52,581 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-08-30 15:59:52,582 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 275 flow [2023-08-30 15:59:52,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:59:52,582 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:52,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:59:52,582 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:59:52,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:59:52,583 INFO L85 PathProgramCache]: Analyzing trace with hash -479499924, now seen corresponding path program 1 times [2023-08-30 15:59:52,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:59:52,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399615278] [2023-08-30 15:59:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:52,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:59:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:59:52,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:59:52,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399615278] [2023-08-30 15:59:52,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399615278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:59:52,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132816496] [2023-08-30 15:59:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:59:52,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:59:52,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:59:52,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:59:52,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:59:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:59:52,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:59:52,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:59:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:59:52,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:59:52,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132816496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:59:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:59:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:59:52,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490319515] [2023-08-30 15:59:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:59:52,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:59:52,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:59:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:59:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:59:52,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-08-30 15:59:52,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:59:52,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-08-30 15:59:52,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:59:52,902 INFO L130 PetriNetUnfolder]: 211/466 cut-off events. [2023-08-30 15:59:52,902 INFO L131 PetriNetUnfolder]: For 670/676 co-relation queries the response was YES. [2023-08-30 15:59:52,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 466 events. 211/466 cut-off events. For 670/676 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1752 event pairs, 48 based on Foata normal form. 12/476 useless extension candidates. Maximal degree in co-relation 1535. Up to 326 conditions per place. [2023-08-30 15:59:52,904 INFO L137 encePairwiseOnDemand]: 252/255 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2023-08-30 15:59:52,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 391 flow [2023-08-30 15:59:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:59:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:59:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 563 transitions. [2023-08-30 15:59:52,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5519607843137255 [2023-08-30 15:59:52,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 563 transitions. [2023-08-30 15:59:52,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 563 transitions. [2023-08-30 15:59:52,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:59:52,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 563 transitions. [2023-08-30 15:59:52,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,909 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,909 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 275 flow. Second operand 4 states and 563 transitions. [2023-08-30 15:59:52,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 391 flow [2023-08-30 15:59:52,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:59:52,912 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-30 15:59:52,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-30 15:59:52,913 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 15:59:52,913 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-30 15:59:52,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:59:52,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 15:59:52,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 15:59:52,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 15:59:52,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 15:59:52,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 15:59:52,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 15:59:52,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 15:59:52,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 15:59:52,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-30 15:59:52,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-30 15:59:52,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 15:59:52,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 15:59:52,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 15:59:52,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 15:59:52,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 15:59:52,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 15:59:52,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 15:59:52,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 15:59:52,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:59:53,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:59:53,122 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:59:53,126 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:59:53,126 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:59:53,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:59:53 BasicIcfg [2023-08-30 15:59:53,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:59:53,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:59:53,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:59:53,129 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:59:53,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:59:42" (3/4) ... [2023-08-30 15:59:53,131 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:59:53,136 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:59:53,136 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:59:53,139 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 15:59:53,139 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 15:59:53,139 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:59:53,139 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:59:53,171 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:59:53,171 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:59:53,172 INFO L158 Benchmark]: Toolchain (without parser) took 12286.91ms. Allocated memory was 69.2MB in the beginning and 304.1MB in the end (delta: 234.9MB). Free memory was 45.8MB in the beginning and 101.6MB in the end (delta: -55.7MB). Peak memory consumption was 181.5MB. Max. memory is 16.1GB. [2023-08-30 15:59:53,172 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 54.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:59:53,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.16ms. Allocated memory is still 69.2MB. Free memory was 45.5MB in the beginning and 36.0MB in the end (delta: 9.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 15:59:53,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.18ms. Allocated memory is still 69.2MB. Free memory was 36.0MB in the beginning and 33.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:59:53,173 INFO L158 Benchmark]: Boogie Preprocessor took 57.47ms. Allocated memory is still 69.2MB. Free memory was 33.6MB in the beginning and 31.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:59:53,173 INFO L158 Benchmark]: RCFGBuilder took 518.27ms. Allocated memory is still 69.2MB. Free memory was 31.7MB in the beginning and 33.3MB in the end (delta: -1.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2023-08-30 15:59:53,173 INFO L158 Benchmark]: TraceAbstraction took 11023.57ms. Allocated memory was 69.2MB in the beginning and 304.1MB in the end (delta: 234.9MB). Free memory was 32.7MB in the beginning and 103.7MB in the end (delta: -70.9MB). Peak memory consumption was 164.4MB. Max. memory is 16.1GB. [2023-08-30 15:59:53,174 INFO L158 Benchmark]: Witness Printer took 42.30ms. Allocated memory is still 304.1MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:59:53,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 54.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.16ms. Allocated memory is still 69.2MB. Free memory was 45.5MB in the beginning and 36.0MB in the end (delta: 9.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.18ms. Allocated memory is still 69.2MB. Free memory was 36.0MB in the beginning and 33.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.47ms. Allocated memory is still 69.2MB. Free memory was 33.6MB in the beginning and 31.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 518.27ms. Allocated memory is still 69.2MB. Free memory was 31.7MB in the beginning and 33.3MB in the end (delta: -1.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11023.57ms. Allocated memory was 69.2MB in the beginning and 304.1MB in the end (delta: 234.9MB). Free memory was 32.7MB in the beginning and 103.7MB in the end (delta: -70.9MB). Peak memory consumption was 164.4MB. Max. memory is 16.1GB. * Witness Printer took 42.30ms. Allocated memory is still 304.1MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 128 PlacesBefore, 38 PlacesAfterwards, 129 TransitionsBefore, 36 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 109 TotalNumberOfCompositions, 6805 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3827, independent: 3611, independent conditional: 0, independent unconditional: 3611, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1671, independent: 1627, independent conditional: 0, independent unconditional: 1627, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3827, independent: 1984, independent conditional: 0, independent unconditional: 1984, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 1671, unknown conditional: 0, unknown unconditional: 1671] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 155, Positive conditional cache size: 0, Positive unconditional cache size: 155, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 198 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.9s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 868 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 645 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 124 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1624 IncrementalHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 104 mSDtfsCounter, 1624 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=861occurred in iteration=4, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 669 SizeOfPredicates, 4 NumberOfNonLiveVariables, 508 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 28/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:59:53,207 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