./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.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-atomic/read_write_lock-2.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 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:48:41,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:48:41,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:48:41,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:48:41,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:48:41,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:48:41,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:48:41,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:48:41,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:48:41,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:48:41,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:48:41,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:48:41,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:48:41,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:48:41,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:48:41,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:48:41,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:48:41,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:48:41,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:48:41,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:48:41,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:48:41,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:48:41,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:48:41,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:48:41,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:48:41,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:48:41,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:48:41,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:48:41,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:48:41,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:48:41,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:48:41,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:48:41,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:48:41,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:48:41,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:48:41,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:48:41,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:48:41,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:48:41,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:48:41,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:48:41,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:48:41,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:48:41,734 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:48:41,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:48:41,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:48:41,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:48:41,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:48:41,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:48:41,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:48:41,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:48:41,738 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:48:41,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:48:41,739 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:48:41,740 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:48:41,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:48:41,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:48:41,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:48:41,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:48:41,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:48:41,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:48:41,741 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:48:41,741 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:48:41,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:48:41,741 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:48:41,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:48:41,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:48:41,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:48:41,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:48:41,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:48:41,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:48:41,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:48:41,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:48:41,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:48:41,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:48:41,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:48:41,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:48:41,744 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:48:41,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:48:41,745 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:48:41,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:48:42,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:48:42,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:48:42,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:48:42,059 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:48:42,060 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:48:42,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2023-08-30 12:48:43,217 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:48:43,462 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:48:43,463 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2023-08-30 12:48:43,473 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423206e09/5f710a1560c74759bd3cad65e1722194/FLAG54080c43e [2023-08-30 12:48:43,488 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423206e09/5f710a1560c74759bd3cad65e1722194 [2023-08-30 12:48:43,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:48:43,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:48:43,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:48:43,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:48:43,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:48:43,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:48:43" (1/1) ... [2023-08-30 12:48:43,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb99046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:43, skipping insertion in model container [2023-08-30 12:48:43,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:48:43" (1/1) ... [2023-08-30 12:48:43,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:48:43,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:48:43,754 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 12:48:43,904 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-atomic/read_write_lock-2.i[31244,31257] [2023-08-30 12:48:43,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:48:43,929 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:48:43,952 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 12:48:43,971 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-atomic/read_write_lock-2.i[31244,31257] [2023-08-30 12:48:43,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:48:44,016 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:48:44,016 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:48:44,017 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:48:44,022 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:48:44,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44 WrapperNode [2023-08-30 12:48:44,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:48:44,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:48:44,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:48:44,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:48:44,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,085 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2023-08-30 12:48:44,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:48:44,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:48:44,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:48:44,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:48:44,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,117 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:48:44,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:48:44,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:48:44,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:48:44,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (1/1) ... [2023-08-30 12:48:44,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:48:44,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:44,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:48:44,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:48:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-08-30 12:48:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-08-30 12:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:48:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:48:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:48:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:48:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:48:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:48:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-08-30 12:48:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-08-30 12:48:44,223 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:48:44,392 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:48:44,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:48:44,605 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:48:44,649 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:48:44,654 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 12:48:44,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:48:44 BoogieIcfgContainer [2023-08-30 12:48:44,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:48:44,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:48:44,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:48:44,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:48:44,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:48:43" (1/3) ... [2023-08-30 12:48:44,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf0dff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:48:44, skipping insertion in model container [2023-08-30 12:48:44,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:48:44" (2/3) ... [2023-08-30 12:48:44,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf0dff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:48:44, skipping insertion in model container [2023-08-30 12:48:44,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:48:44" (3/3) ... [2023-08-30 12:48:44,665 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2023-08-30 12:48:44,672 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:48:44,682 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:48:44,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 12:48:44,682 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:48:44,794 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 12:48:44,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 116 transitions, 264 flow [2023-08-30 12:48:44,919 INFO L130 PetriNetUnfolder]: 2/112 cut-off events. [2023-08-30 12:48:44,919 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 12:48:44,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 112 events. 2/112 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-08-30 12:48:44,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 116 transitions, 264 flow [2023-08-30 12:48:44,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 99 transitions, 219 flow [2023-08-30 12:48:44,932 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:48:44,948 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 99 transitions, 219 flow [2023-08-30 12:48:44,951 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 99 transitions, 219 flow [2023-08-30 12:48:44,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 99 transitions, 219 flow [2023-08-30 12:48:44,980 INFO L130 PetriNetUnfolder]: 2/99 cut-off events. [2023-08-30 12:48:44,980 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 12:48:44,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 99 events. 2/99 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-08-30 12:48:44,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 3096 [2023-08-30 12:48:47,743 INFO L134 LiptonReduction]: Checked pairs total: 10586 [2023-08-30 12:48:47,743 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-08-30 12:48:47,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:48:47,760 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;@5ec6c1d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:48:47,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 12:48:47,765 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 12:48:47,765 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:48:47,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:47,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:48:47,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:47,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash 368176882, now seen corresponding path program 1 times [2023-08-30 12:48:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:47,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189507897] [2023-08-30 12:48:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:48,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:48,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189507897] [2023-08-30 12:48:48,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189507897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:48,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:48,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:48:48,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014551328] [2023-08-30 12:48:48,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:48,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:48:48,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:48:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:48:48,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 180 [2023-08-30 12:48:48,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:48,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:48,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 180 [2023-08-30 12:48:48,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:49,215 INFO L130 PetriNetUnfolder]: 7768/12228 cut-off events. [2023-08-30 12:48:49,215 INFO L131 PetriNetUnfolder]: For 1125/1125 co-relation queries the response was YES. [2023-08-30 12:48:49,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24580 conditions, 12228 events. 7768/12228 cut-off events. For 1125/1125 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 87809 event pairs, 3532 based on Foata normal form. 0/10375 useless extension candidates. Maximal degree in co-relation 18131. Up to 6383 conditions per place. [2023-08-30 12:48:49,296 INFO L137 encePairwiseOnDemand]: 165/180 looper letters, 51 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2023-08-30 12:48:49,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 284 flow [2023-08-30 12:48:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:48:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:48:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-08-30 12:48:49,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2023-08-30 12:48:49,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-08-30 12:48:49,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-08-30 12:48:49,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:49,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-08-30 12:48:49,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:49,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:49,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:49,329 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 107 flow. Second operand 3 states and 333 transitions. [2023-08-30 12:48:49,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 284 flow [2023-08-30 12:48:49,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 12:48:49,359 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 162 flow [2023-08-30 12:48:49,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-30 12:48:49,365 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-08-30 12:48:49,383 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 162 flow [2023-08-30 12:48:49,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:49,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:49,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:49,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:48:49,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:49,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash -204948667, now seen corresponding path program 1 times [2023-08-30 12:48:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:49,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525957510] [2023-08-30 12:48:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:49,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:49,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:49,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525957510] [2023-08-30 12:48:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525957510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:49,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:49,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:48:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125547839] [2023-08-30 12:48:49,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:49,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:48:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:48:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:48:49,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 180 [2023-08-30 12:48:49,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:49,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:49,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 180 [2023-08-30 12:48:49,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:50,579 INFO L130 PetriNetUnfolder]: 7772/12425 cut-off events. [2023-08-30 12:48:50,579 INFO L131 PetriNetUnfolder]: For 4840/4840 co-relation queries the response was YES. [2023-08-30 12:48:50,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30796 conditions, 12425 events. 7772/12425 cut-off events. For 4840/4840 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 90998 event pairs, 2432 based on Foata normal form. 0/11551 useless extension candidates. Maximal degree in co-relation 6432. Up to 4617 conditions per place. [2023-08-30 12:48:50,650 INFO L137 encePairwiseOnDemand]: 165/180 looper letters, 68 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2023-08-30 12:48:50,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 456 flow [2023-08-30 12:48:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:48:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:48:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2023-08-30 12:48:50,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2023-08-30 12:48:50,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2023-08-30 12:48:50,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2023-08-30 12:48:50,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:50,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2023-08-30 12:48:50,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:50,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:50,657 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:50,657 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 162 flow. Second operand 4 states and 445 transitions. [2023-08-30 12:48:50,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 456 flow [2023-08-30 12:48:50,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 93 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:48:50,676 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 271 flow [2023-08-30 12:48:50,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-30 12:48:50,677 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-08-30 12:48:50,678 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 271 flow [2023-08-30 12:48:50,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:50,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:50,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:50,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:48:50,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:50,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:50,679 INFO L85 PathProgramCache]: Analyzing trace with hash -204948668, now seen corresponding path program 1 times [2023-08-30 12:48:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:50,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103543662] [2023-08-30 12:48:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:50,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103543662] [2023-08-30 12:48:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103543662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:50,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:50,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:48:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684795379] [2023-08-30 12:48:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:50,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:48:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:48:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:48:50,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 180 [2023-08-30 12:48:50,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:50,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:50,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 180 [2023-08-30 12:48:50,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:51,274 INFO L130 PetriNetUnfolder]: 2921/5187 cut-off events. [2023-08-30 12:48:51,275 INFO L131 PetriNetUnfolder]: For 5195/5195 co-relation queries the response was YES. [2023-08-30 12:48:51,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13660 conditions, 5187 events. 2921/5187 cut-off events. For 5195/5195 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 36901 event pairs, 916 based on Foata normal form. 936/5951 useless extension candidates. Maximal degree in co-relation 2911. Up to 2290 conditions per place. [2023-08-30 12:48:51,304 INFO L137 encePairwiseOnDemand]: 165/180 looper letters, 60 selfloop transitions, 15 changer transitions 10/93 dead transitions. [2023-08-30 12:48:51,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 521 flow [2023-08-30 12:48:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:48:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:48:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2023-08-30 12:48:51,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6152777777777778 [2023-08-30 12:48:51,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2023-08-30 12:48:51,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2023-08-30 12:48:51,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:51,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2023-08-30 12:48:51,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:51,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:51,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:51,311 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 271 flow. Second operand 4 states and 443 transitions. [2023-08-30 12:48:51,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 521 flow [2023-08-30 12:48:51,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 93 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 12:48:51,320 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 280 flow [2023-08-30 12:48:51,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-08-30 12:48:51,321 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 12:48:51,321 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 280 flow [2023-08-30 12:48:51,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:51,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:51,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:51,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:48:51,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:51,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash 302529949, now seen corresponding path program 1 times [2023-08-30 12:48:51,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:51,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200028177] [2023-08-30 12:48:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:51,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:51,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200028177] [2023-08-30 12:48:51,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200028177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:51,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:51,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:48:51,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578770077] [2023-08-30 12:48:51,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:51,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:48:51,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:51,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:48:51,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:48:51,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 180 [2023-08-30 12:48:51,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:51,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:51,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 180 [2023-08-30 12:48:51,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:51,831 INFO L130 PetriNetUnfolder]: 2643/4947 cut-off events. [2023-08-30 12:48:51,831 INFO L131 PetriNetUnfolder]: For 5502/5502 co-relation queries the response was YES. [2023-08-30 12:48:51,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13248 conditions, 4947 events. 2643/4947 cut-off events. For 5502/5502 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 36809 event pairs, 1661 based on Foata normal form. 200/5047 useless extension candidates. Maximal degree in co-relation 3451. Up to 3330 conditions per place. [2023-08-30 12:48:51,862 INFO L137 encePairwiseOnDemand]: 167/180 looper letters, 49 selfloop transitions, 11 changer transitions 6/74 dead transitions. [2023-08-30 12:48:51,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 470 flow [2023-08-30 12:48:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:48:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:48:51,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-08-30 12:48:51,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2023-08-30 12:48:51,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-08-30 12:48:51,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-08-30 12:48:51,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:51,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-08-30 12:48:51,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:51,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:51,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:51,868 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 280 flow. Second operand 3 states and 327 transitions. [2023-08-30 12:48:51,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 470 flow [2023-08-30 12:48:51,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 442 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 12:48:51,878 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 298 flow [2023-08-30 12:48:51,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-08-30 12:48:51,879 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-30 12:48:51,880 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 298 flow [2023-08-30 12:48:51,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:51,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:51,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:51,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:48:51,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:51,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:51,881 INFO L85 PathProgramCache]: Analyzing trace with hash 625413283, now seen corresponding path program 1 times [2023-08-30 12:48:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106021063] [2023-08-30 12:48:51,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:51,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:51,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106021063] [2023-08-30 12:48:51,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106021063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:51,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:51,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:48:51,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750318495] [2023-08-30 12:48:51,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:51,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:48:51,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:48:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:48:52,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 180 [2023-08-30 12:48:52,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:52,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 180 [2023-08-30 12:48:52,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:52,424 INFO L130 PetriNetUnfolder]: 2002/3792 cut-off events. [2023-08-30 12:48:52,424 INFO L131 PetriNetUnfolder]: For 3728/3728 co-relation queries the response was YES. [2023-08-30 12:48:52,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10093 conditions, 3792 events. 2002/3792 cut-off events. For 3728/3728 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 27100 event pairs, 368 based on Foata normal form. 96/3860 useless extension candidates. Maximal degree in co-relation 4328. Up to 1303 conditions per place. [2023-08-30 12:48:52,444 INFO L137 encePairwiseOnDemand]: 166/180 looper letters, 69 selfloop transitions, 14 changer transitions 10/100 dead transitions. [2023-08-30 12:48:52,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 100 transitions, 577 flow [2023-08-30 12:48:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:48:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:48:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 702 transitions. [2023-08-30 12:48:52,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2023-08-30 12:48:52,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 702 transitions. [2023-08-30 12:48:52,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 702 transitions. [2023-08-30 12:48:52,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:52,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 702 transitions. [2023-08-30 12:48:52,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,453 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,453 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 298 flow. Second operand 7 states and 702 transitions. [2023-08-30 12:48:52,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 100 transitions, 577 flow [2023-08-30 12:48:52,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 549 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 12:48:52,466 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 257 flow [2023-08-30 12:48:52,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2023-08-30 12:48:52,467 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-08-30 12:48:52,467 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 257 flow [2023-08-30 12:48:52,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:52,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:52,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:48:52,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:52,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:52,468 INFO L85 PathProgramCache]: Analyzing trace with hash 788402940, now seen corresponding path program 1 times [2023-08-30 12:48:52,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:52,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674000206] [2023-08-30 12:48:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:52,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:52,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:52,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674000206] [2023-08-30 12:48:52,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674000206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:52,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:52,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:48:52,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918969853] [2023-08-30 12:48:52,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:52,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:48:52,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:52,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:48:52,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:48:52,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 180 [2023-08-30 12:48:52,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:52,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 180 [2023-08-30 12:48:52,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:52,862 INFO L130 PetriNetUnfolder]: 1979/3713 cut-off events. [2023-08-30 12:48:52,862 INFO L131 PetriNetUnfolder]: For 3514/3514 co-relation queries the response was YES. [2023-08-30 12:48:52,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10099 conditions, 3713 events. 1979/3713 cut-off events. For 3514/3514 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26290 event pairs, 256 based on Foata normal form. 64/3714 useless extension candidates. Maximal degree in co-relation 4862. Up to 1750 conditions per place. [2023-08-30 12:48:52,881 INFO L137 encePairwiseOnDemand]: 168/180 looper letters, 52 selfloop transitions, 11 changer transitions 35/105 dead transitions. [2023-08-30 12:48:52,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 587 flow [2023-08-30 12:48:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:48:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:48:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 795 transitions. [2023-08-30 12:48:52,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2023-08-30 12:48:52,884 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 795 transitions. [2023-08-30 12:48:52,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 795 transitions. [2023-08-30 12:48:52,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:52,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 795 transitions. [2023-08-30 12:48:52,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.375) internal successors, (795), 8 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,889 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,889 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 257 flow. Second operand 8 states and 795 transitions. [2023-08-30 12:48:52,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 587 flow [2023-08-30 12:48:52,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 551 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 12:48:52,905 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 238 flow [2023-08-30 12:48:52,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=238, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-08-30 12:48:52,906 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-08-30 12:48:52,906 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 238 flow [2023-08-30 12:48:52,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:52,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:52,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:48:52,907 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:52,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:52,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1130746852, now seen corresponding path program 1 times [2023-08-30 12:48:52,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:52,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435913617] [2023-08-30 12:48:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:52,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435913617] [2023-08-30 12:48:52,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435913617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:52,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:52,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:48:52,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415675086] [2023-08-30 12:48:52,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:52,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:48:52,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:52,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:48:52,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:48:52,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 180 [2023-08-30 12:48:52,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:52,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:52,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 180 [2023-08-30 12:48:52,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:53,339 INFO L130 PetriNetUnfolder]: 1748/3340 cut-off events. [2023-08-30 12:48:53,339 INFO L131 PetriNetUnfolder]: For 3269/3269 co-relation queries the response was YES. [2023-08-30 12:48:53,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9181 conditions, 3340 events. 1748/3340 cut-off events. For 3269/3269 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 23585 event pairs, 248 based on Foata normal form. 48/3336 useless extension candidates. Maximal degree in co-relation 8995. Up to 1479 conditions per place. [2023-08-30 12:48:53,360 INFO L137 encePairwiseOnDemand]: 170/180 looper letters, 76 selfloop transitions, 16 changer transitions 6/105 dead transitions. [2023-08-30 12:48:53,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 606 flow [2023-08-30 12:48:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 12:48:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 12:48:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 883 transitions. [2023-08-30 12:48:53,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450617283950617 [2023-08-30 12:48:53,364 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 883 transitions. [2023-08-30 12:48:53,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 883 transitions. [2023-08-30 12:48:53,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:53,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 883 transitions. [2023-08-30 12:48:53,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.11111111111111) internal successors, (883), 9 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,369 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,369 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 238 flow. Second operand 9 states and 883 transitions. [2023-08-30 12:48:53,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 606 flow [2023-08-30 12:48:53,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 105 transitions, 551 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-30 12:48:53,392 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 283 flow [2023-08-30 12:48:53,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-08-30 12:48:53,393 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-08-30 12:48:53,394 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 283 flow [2023-08-30 12:48:53,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:53,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:53,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:48:53,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:53,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:53,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1130746851, now seen corresponding path program 1 times [2023-08-30 12:48:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:53,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974882712] [2023-08-30 12:48:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:53,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:53,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974882712] [2023-08-30 12:48:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974882712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:53,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:53,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:48:53,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23756512] [2023-08-30 12:48:53,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:53,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:48:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:48:53,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:48:53,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 180 [2023-08-30 12:48:53,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:53,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 180 [2023-08-30 12:48:53,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:53,855 INFO L130 PetriNetUnfolder]: 1554/2974 cut-off events. [2023-08-30 12:48:53,855 INFO L131 PetriNetUnfolder]: For 4007/4007 co-relation queries the response was YES. [2023-08-30 12:48:53,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8048 conditions, 2974 events. 1554/2974 cut-off events. For 4007/4007 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 20773 event pairs, 292 based on Foata normal form. 96/2996 useless extension candidates. Maximal degree in co-relation 6680. Up to 1129 conditions per place. [2023-08-30 12:48:53,865 INFO L137 encePairwiseOnDemand]: 170/180 looper letters, 56 selfloop transitions, 8 changer transitions 17/88 dead transitions. [2023-08-30 12:48:53,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 478 flow [2023-08-30 12:48:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:48:53,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:48:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 690 transitions. [2023-08-30 12:48:53,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2023-08-30 12:48:53,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 690 transitions. [2023-08-30 12:48:53,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 690 transitions. [2023-08-30 12:48:53,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:53,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 690 transitions. [2023-08-30 12:48:53,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.57142857142857) internal successors, (690), 7 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,873 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,873 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 283 flow. Second operand 7 states and 690 transitions. [2023-08-30 12:48:53,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 478 flow [2023-08-30 12:48:53,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 453 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 12:48:53,892 INFO L231 Difference]: Finished difference. Result has 65 places, 39 transitions, 157 flow [2023-08-30 12:48:53,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=157, PETRI_PLACES=65, PETRI_TRANSITIONS=39} [2023-08-30 12:48:53,893 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2023-08-30 12:48:53,893 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 39 transitions, 157 flow [2023-08-30 12:48:53,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:53,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:53,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:48:53,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:53,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1824480489, now seen corresponding path program 1 times [2023-08-30 12:48:53,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:53,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708689943] [2023-08-30 12:48:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:53,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:53,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:53,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708689943] [2023-08-30 12:48:53,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708689943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:53,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:53,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:48:53,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314669312] [2023-08-30 12:48:53,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:53,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:48:53,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:48:53,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:48:53,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 180 [2023-08-30 12:48:53,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 39 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:53,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:53,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 180 [2023-08-30 12:48:53,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:54,177 INFO L130 PetriNetUnfolder]: 1157/2243 cut-off events. [2023-08-30 12:48:54,177 INFO L131 PetriNetUnfolder]: For 2139/2139 co-relation queries the response was YES. [2023-08-30 12:48:54,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5738 conditions, 2243 events. 1157/2243 cut-off events. For 2139/2139 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15170 event pairs, 52 based on Foata normal form. 32/2271 useless extension candidates. Maximal degree in co-relation 5526. Up to 669 conditions per place. [2023-08-30 12:48:54,187 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 43 selfloop transitions, 6 changer transitions 19/75 dead transitions. [2023-08-30 12:48:54,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 374 flow [2023-08-30 12:48:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:48:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:48:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 678 transitions. [2023-08-30 12:48:54,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2023-08-30 12:48:54,189 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 678 transitions. [2023-08-30 12:48:54,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 678 transitions. [2023-08-30 12:48:54,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:54,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 678 transitions. [2023-08-30 12:48:54,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,194 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,194 INFO L175 Difference]: Start difference. First operand has 65 places, 39 transitions, 157 flow. Second operand 7 states and 678 transitions. [2023-08-30 12:48:54,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 374 flow [2023-08-30 12:48:54,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 340 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-08-30 12:48:54,203 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 112 flow [2023-08-30 12:48:54,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=112, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2023-08-30 12:48:54,204 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-08-30 12:48:54,204 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 112 flow [2023-08-30 12:48:54,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:54,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:54,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:48:54,205 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 12:48:54,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1824463240, now seen corresponding path program 1 times [2023-08-30 12:48:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:54,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736874298] [2023-08-30 12:48:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:54,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:48:54,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:54,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736874298] [2023-08-30 12:48:54,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736874298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:48:54,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:48:54,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:48:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290466829] [2023-08-30 12:48:54,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:48:54,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:48:54,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:48:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:48:54,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 180 [2023-08-30 12:48:54,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:54,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 180 [2023-08-30 12:48:54,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:54,419 INFO L130 PetriNetUnfolder]: 755/1471 cut-off events. [2023-08-30 12:48:54,419 INFO L131 PetriNetUnfolder]: For 1077/1077 co-relation queries the response was YES. [2023-08-30 12:48:54,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1471 events. 755/1471 cut-off events. For 1077/1077 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9599 event pairs, 82 based on Foata normal form. 24/1461 useless extension candidates. Maximal degree in co-relation 927. Up to 462 conditions per place. [2023-08-30 12:48:54,423 INFO L137 encePairwiseOnDemand]: 174/180 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-08-30 12:48:54,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 279 flow [2023-08-30 12:48:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:48:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:48:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2023-08-30 12:48:54,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261904761904762 [2023-08-30 12:48:54,426 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 663 transitions. [2023-08-30 12:48:54,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 663 transitions. [2023-08-30 12:48:54,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:54,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 663 transitions. [2023-08-30 12:48:54,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,430 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,430 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 112 flow. Second operand 7 states and 663 transitions. [2023-08-30 12:48:54,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 279 flow [2023-08-30 12:48:54,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 257 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 12:48:54,433 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-30 12:48:54,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-30 12:48:54,434 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-08-30 12:48:54,434 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-30 12:48:54,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 12:48:54,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 12:48:54,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 12:48:54,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 12:48:54,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2023-08-30 12:48:54,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2023-08-30 12:48:54,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2023-08-30 12:48:54,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-30 12:48:54,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 12:48:54,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 12:48:54,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 12:48:54,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 12:48:54,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 12:48:54,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 12:48:54,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 12:48:54,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 12:48:54,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:48:54,440 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:54,444 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:48:54,444 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:48:54,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:48:54 BasicIcfg [2023-08-30 12:48:54,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:48:54,448 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:48:54,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:48:54,448 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:48:54,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:48:44" (3/4) ... [2023-08-30 12:48:54,450 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:48:54,454 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2023-08-30 12:48:54,455 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2023-08-30 12:48:54,458 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-08-30 12:48:54,458 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:48:54,458 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:48:54,458 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:48:54,483 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:48:54,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:48:54,483 INFO L158 Benchmark]: Toolchain (without parser) took 10991.41ms. Allocated memory was 94.4MB in the beginning and 996.1MB in the end (delta: 901.8MB). Free memory was 71.4MB in the beginning and 570.7MB in the end (delta: -499.3MB). Peak memory consumption was 405.2MB. Max. memory is 16.1GB. [2023-08-30 12:48:54,484 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 69.2MB. Free memory was 48.1MB in the beginning and 48.0MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:48:54,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.50ms. Allocated memory is still 94.4MB. Free memory was 71.2MB in the beginning and 51.4MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-30 12:48:54,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.80ms. Allocated memory is still 94.4MB. Free memory was 51.4MB in the beginning and 49.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:48:54,485 INFO L158 Benchmark]: Boogie Preprocessor took 52.23ms. Allocated memory is still 94.4MB. Free memory was 49.2MB in the beginning and 75.0MB in the end (delta: -25.8MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-08-30 12:48:54,485 INFO L158 Benchmark]: RCFGBuilder took 517.00ms. Allocated memory is still 94.4MB. Free memory was 75.0MB in the beginning and 57.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 12:48:54,485 INFO L158 Benchmark]: TraceAbstraction took 9788.51ms. Allocated memory was 94.4MB in the beginning and 996.1MB in the end (delta: 901.8MB). Free memory was 56.8MB in the beginning and 573.9MB in the end (delta: -517.1MB). Peak memory consumption was 384.4MB. Max. memory is 16.1GB. [2023-08-30 12:48:54,485 INFO L158 Benchmark]: Witness Printer took 35.29ms. Allocated memory is still 996.1MB. Free memory was 573.9MB in the beginning and 570.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:48:54,487 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 69.2MB. Free memory was 48.1MB in the beginning and 48.0MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 529.50ms. Allocated memory is still 94.4MB. Free memory was 71.2MB in the beginning and 51.4MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.80ms. Allocated memory is still 94.4MB. Free memory was 51.4MB in the beginning and 49.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.23ms. Allocated memory is still 94.4MB. Free memory was 49.2MB in the beginning and 75.0MB in the end (delta: -25.8MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * RCFGBuilder took 517.00ms. Allocated memory is still 94.4MB. Free memory was 75.0MB in the beginning and 57.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9788.51ms. Allocated memory was 94.4MB in the beginning and 996.1MB in the end (delta: 901.8MB). Free memory was 56.8MB in the beginning and 573.9MB in the end (delta: -517.1MB). Peak memory consumption was 384.4MB. Max. memory is 16.1GB. * Witness Printer took 35.29ms. Allocated memory is still 996.1MB. Free memory was 573.9MB in the beginning and 570.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 110 PlacesBefore, 56 PlacesAfterwards, 99 TransitionsBefore, 43 TransitionsAfterwards, 3096 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 10586 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5046, independent: 4772, independent conditional: 0, independent unconditional: 4772, dependent: 274, dependent conditional: 0, dependent unconditional: 274, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1496, independent: 1457, independent conditional: 0, independent unconditional: 1457, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5046, independent: 3315, independent conditional: 0, independent unconditional: 3315, dependent: 235, dependent conditional: 0, dependent unconditional: 235, unknown: 1496, unknown conditional: 0, unknown unconditional: 1496] , Statistics on independence cache: Total cache size (in pairs): 314, Positive cache size: 293, Positive conditional cache size: 0, Positive unconditional cache size: 293, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: 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 7 procedures, 144 locations, 16 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: 9.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 611 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 566 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1417 IncrementalHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 12 mSDtfsCounter, 1417 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=4, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:48:54,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE