./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.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-wmm/rfi000_power.opt_pso.opt_rmo.opt.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 ed015c7abb1e633204d95cacfb8444fc40c913627602030095cae55094cd4434 --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 13:01:27,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:01:27,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:01:27,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:01:27,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:01:27,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:01:27,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:01:27,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:01:27,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:01:27,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:01:27,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:01:27,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:01:27,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:01:27,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:01:27,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:01:27,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:01:27,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:01:27,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:01:27,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:01:27,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:01:27,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:01:27,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:01:27,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:01:27,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:01:27,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:01:27,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:01:27,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:01:27,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:01:27,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:01:27,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:01:27,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:01:27,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:01:27,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:01:27,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:01:27,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:01:27,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:01:27,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:01:27,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:01:27,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:01:27,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:01:27,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:01:27,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:01:27,613 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:01:27,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:01:27,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:01:27,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:01:27,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:01:27,616 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:01:27,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:01:27,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:01:27,617 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:01:27,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:01:27,617 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:01:27,618 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:01:27,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:01:27,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:01:27,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:01:27,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:01:27,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:01:27,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:01:27,619 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:01:27,619 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:01:27,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:01:27,620 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:01:27,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:01:27,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:01:27,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:01:27,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:01:27,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:01:27,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:01:27,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:01:27,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:01:27,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:01:27,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:01:27,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:01:27,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:01:27,622 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:01:27,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:01:27,623 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:01:27,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed015c7abb1e633204d95cacfb8444fc40c913627602030095cae55094cd4434 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:01:27,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:01:27,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:01:27,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:01:27,981 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:01:27,981 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:01:27,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2023-08-30 13:01:29,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:01:29,463 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:01:29,463 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2023-08-30 13:01:29,489 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9a06756e/30e5ffd60ce547f588a5aab454c3c815/FLAGe0c388ba8 [2023-08-30 13:01:29,503 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9a06756e/30e5ffd60ce547f588a5aab454c3c815 [2023-08-30 13:01:29,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:01:29,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:01:29,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:01:29,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:01:29,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:01:29,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:01:29" (1/1) ... [2023-08-30 13:01:29,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dfb0810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:29, skipping insertion in model container [2023-08-30 13:01:29,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:01:29" (1/1) ... [2023-08-30 13:01:29,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:01:29,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:01:29,692 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-wmm/rfi000_power.opt_pso.opt_rmo.opt.i[966,979] [2023-08-30 13:01:29,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:01:29,918 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:01:29,929 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-wmm/rfi000_power.opt_pso.opt_rmo.opt.i[966,979] [2023-08-30 13:01:29,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:01:30,021 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:01:30,021 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:01:30,027 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:01:30,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30 WrapperNode [2023-08-30 13:01:30,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:01:30,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:01:30,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:01:30,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:01:30,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,086 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2023-08-30 13:01:30,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:01:30,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:01:30,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:01:30,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:01:30,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:01:30,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:01:30,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:01:30,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:01:30,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (1/1) ... [2023-08-30 13:01:30,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:01:30,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:01:30,172 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 13:01:30,185 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 13:01:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:01:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 13:01:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:01:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:01:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:01:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 13:01:30,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 13:01:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 13:01:30,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 13:01:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 13:01:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 13:01:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:01:30,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:01:30,217 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 13:01:30,323 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:01:30,325 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:01:30,646 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:01:30,855 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:01:30,856 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 13:01:30,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:01:30 BoogieIcfgContainer [2023-08-30 13:01:30,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:01:30,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:01:30,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:01:30,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:01:30,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:01:29" (1/3) ... [2023-08-30 13:01:30,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da458d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:01:30, skipping insertion in model container [2023-08-30 13:01:30,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:01:30" (2/3) ... [2023-08-30 13:01:30,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da458d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:01:30, skipping insertion in model container [2023-08-30 13:01:30,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:01:30" (3/3) ... [2023-08-30 13:01:30,866 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.opt_pso.opt_rmo.opt.i [2023-08-30 13:01:30,875 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:01:30,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:01:30,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 13:01:30,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:01:30,959 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 13:01:31,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 194 flow [2023-08-30 13:01:31,067 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-08-30 13:01:31,067 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:01:31,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-30 13:01:31,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 194 flow [2023-08-30 13:01:31,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 90 transitions, 186 flow [2023-08-30 13:01:31,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:01:31,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 90 transitions, 186 flow [2023-08-30 13:01:31,117 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 90 transitions, 186 flow [2023-08-30 13:01:31,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 186 flow [2023-08-30 13:01:31,151 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-08-30 13:01:31,152 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:01:31,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-30 13:01:31,155 INFO L119 LiptonReduction]: Number of co-enabled transitions 1364 [2023-08-30 13:01:34,952 INFO L134 LiptonReduction]: Checked pairs total: 4450 [2023-08-30 13:01:34,952 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-30 13:01:34,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:01:34,978 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;@7d46185, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:01:34,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-30 13:01:34,982 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 13:01:34,983 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:01:34,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:01:34,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:01:34,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:01:34,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:01:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash -471234465, now seen corresponding path program 1 times [2023-08-30 13:01:35,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:01:35,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132481803] [2023-08-30 13:01:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:01:35,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:01:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:01:35,308 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 13:01:35,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:01:35,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132481803] [2023-08-30 13:01:35,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132481803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:01:35,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:01:35,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:01:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952761744] [2023-08-30 13:01:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:01:35,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:01:35,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:01:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:01:35,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:01:35,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-08-30 13:01:35,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 13:01:35,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:01:35,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-08-30 13:01:35,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:01:35,482 INFO L130 PetriNetUnfolder]: 99/199 cut-off events. [2023-08-30 13:01:35,483 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 13:01:35,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 199 events. 99/199 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 721 event pairs, 44 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 391. Up to 102 conditions per place. [2023-08-30 13:01:35,487 INFO L137 encePairwiseOnDemand]: 160/167 looper letters, 23 selfloop transitions, 3 changer transitions 2/32 dead transitions. [2023-08-30 13:01:35,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 129 flow [2023-08-30 13:01:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:01:35,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:01:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-08-30 13:01:35,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129740518962076 [2023-08-30 13:01:35,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-08-30 13:01:35,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-08-30 13:01:35,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:01:35,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-08-30 13:01:35,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 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 13:01:35,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 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 13:01:35,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 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 13:01:35,522 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 257 transitions. [2023-08-30 13:01:35,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 129 flow [2023-08-30 13:01:35,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:01:35,526 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 63 flow [2023-08-30 13:01:35,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-30 13:01:35,531 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-30 13:01:35,532 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 63 flow [2023-08-30 13:01:35,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 13:01:35,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:01:35,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:01:35,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:01:35,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:01:35,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:01:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash 978405274, now seen corresponding path program 1 times [2023-08-30 13:01:35,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:01:35,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312757207] [2023-08-30 13:01:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:01:35,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:01:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:01:35,682 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 13:01:35,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:01:35,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312757207] [2023-08-30 13:01:35,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312757207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:01:35,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:01:35,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:01:35,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059911053] [2023-08-30 13:01:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:01:35,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:01:35,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:01:35,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:01:35,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 13:01:35,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-08-30 13:01:35,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 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 13:01:35,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:01:35,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-08-30 13:01:35,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:01:35,798 INFO L130 PetriNetUnfolder]: 86/174 cut-off events. [2023-08-30 13:01:35,799 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 13:01:35,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 174 events. 86/174 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 622 event pairs, 44 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 401. Up to 87 conditions per place. [2023-08-30 13:01:35,804 INFO L137 encePairwiseOnDemand]: 162/167 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-08-30 13:01:35,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 123 flow [2023-08-30 13:01:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:01:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:01:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2023-08-30 13:01:35,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880239520958084 [2023-08-30 13:01:35,807 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 326 transitions. [2023-08-30 13:01:35,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 326 transitions. [2023-08-30 13:01:35,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:01:35,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 326 transitions. [2023-08-30 13:01:35,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 13:01:35,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 13:01:35,813 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 13:01:35,813 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 63 flow. Second operand 4 states and 326 transitions. [2023-08-30 13:01:35,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 123 flow [2023-08-30 13:01:35,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:01:35,816 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 58 flow [2023-08-30 13:01:35,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-08-30 13:01:35,817 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-30 13:01:35,817 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 58 flow [2023-08-30 13:01:35,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 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 13:01:35,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:01:35,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:01:35,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 13:01:35,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 13:01:35,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:01:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash 978405275, now seen corresponding path program 1 times [2023-08-30 13:01:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:01:35,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610053919] [2023-08-30 13:01:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:01:35,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:01:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:01:35,969 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 13:01:35,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:01:35,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610053919] [2023-08-30 13:01:35,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610053919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:01:35,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:01:35,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:01:35,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213420275] [2023-08-30 13:01:35,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:01:35,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:01:35,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:01:35,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:01:35,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 13:01:35,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-08-30 13:01:35,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 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 13:01:35,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:01:35,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-08-30 13:01:35,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:01:36,056 INFO L130 PetriNetUnfolder]: 80/160 cut-off events. [2023-08-30 13:01:36,056 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2023-08-30 13:01:36,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 160 events. 80/160 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 576 event pairs, 44 based on Foata normal form. 8/156 useless extension candidates. Maximal degree in co-relation 365. Up to 87 conditions per place. [2023-08-30 13:01:36,057 INFO L137 encePairwiseOnDemand]: 162/167 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-30 13:01:36,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 114 flow [2023-08-30 13:01:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:01:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:01:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-08-30 13:01:36,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48502994011976047 [2023-08-30 13:01:36,059 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-08-30 13:01:36,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-08-30 13:01:36,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:01:36,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-08-30 13:01:36,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 13:01:36,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 13:01:36,074 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 13:01:36,074 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 58 flow. Second operand 4 states and 324 transitions. [2023-08-30 13:01:36,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 114 flow [2023-08-30 13:01:36,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 13:01:36,076 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-30 13:01:36,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-30 13:01:36,077 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-30 13:01:36,077 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-30 13:01:36,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 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 13:01:36,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-08-30 13:01:36,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-08-30 13:01:36,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-08-30 13:01:36,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-08-30 13:01:36,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2023-08-30 13:01:36,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2023-08-30 13:01:36,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-08-30 13:01:36,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-08-30 13:01:36,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-08-30 13:01:36,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-08-30 13:01:36,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 13:01:36,082 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 13:01:36,087 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 13:01:36,087 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 13:01:36,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:01:36 BasicIcfg [2023-08-30 13:01:36,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 13:01:36,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 13:01:36,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 13:01:36,091 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 13:01:36,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:01:30" (3/4) ... [2023-08-30 13:01:36,094 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 13:01:36,098 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 13:01:36,098 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 13:01:36,102 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-08-30 13:01:36,103 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-08-30 13:01:36,103 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 13:01:36,103 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 13:01:36,135 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 13:01:36,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 13:01:36,136 INFO L158 Benchmark]: Toolchain (without parser) took 6629.43ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 41.8MB in the beginning and 73.3MB in the end (delta: -31.6MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2023-08-30 13:01:36,136 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 13:01:36,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.31ms. Allocated memory is still 71.3MB. Free memory was 41.6MB in the beginning and 36.6MB in the end (delta: 5.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2023-08-30 13:01:36,136 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.26ms. Allocated memory is still 71.3MB. Free memory was 36.6MB in the beginning and 34.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 13:01:36,137 INFO L158 Benchmark]: Boogie Preprocessor took 50.07ms. Allocated memory is still 71.3MB. Free memory was 34.0MB in the beginning and 32.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 13:01:36,137 INFO L158 Benchmark]: RCFGBuilder took 720.43ms. Allocated memory is still 71.3MB. Free memory was 32.1MB in the beginning and 43.2MB in the end (delta: -11.0MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-08-30 13:01:36,137 INFO L158 Benchmark]: TraceAbstraction took 5230.85ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 42.5MB in the beginning and 76.7MB in the end (delta: -34.3MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2023-08-30 13:01:36,138 INFO L158 Benchmark]: Witness Printer took 44.03ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 73.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 13:01:36,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.31ms. Allocated memory is still 71.3MB. Free memory was 41.6MB in the beginning and 36.6MB in the end (delta: 5.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.26ms. Allocated memory is still 71.3MB. Free memory was 36.6MB in the beginning and 34.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.07ms. Allocated memory is still 71.3MB. Free memory was 34.0MB in the beginning and 32.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 720.43ms. Allocated memory is still 71.3MB. Free memory was 32.1MB in the beginning and 43.2MB in the end (delta: -11.0MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5230.85ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 42.5MB in the beginning and 76.7MB in the end (delta: -34.3MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * Witness Printer took 44.03ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 73.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 95 PlacesBefore, 28 PlacesAfterwards, 90 TransitionsBefore, 21 TransitionsAfterwards, 1364 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 4450 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2061, independent: 1848, independent conditional: 0, independent unconditional: 1848, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 768, independent: 720, independent conditional: 0, independent unconditional: 720, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2061, independent: 1128, independent conditional: 0, independent unconditional: 1128, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 768, unknown conditional: 0, unknown unconditional: 768] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 751]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 751]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 785]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 785]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 115 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 118 IncrementalHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 5 mSDtfsCounter, 118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=1, InterpolantAutomatonStates: 11, 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, 0.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 93 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 13:01:36,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE