./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe015_power.oepc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/safe015_power.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1568f4b0615eb98ed6bee584aeda19485d9df0ed08c84a8233a5817e939c5388 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:56:32,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:56:32,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:56:32,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:56:32,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:56:32,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:56:32,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:56:32,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:56:32,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:56:32,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:56:32,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:56:32,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:56:32,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:56:32,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:56:32,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:56:32,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:56:32,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:56:32,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:56:32,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:56:32,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:56:32,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:56:32,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:56:32,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:56:32,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:56:32,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:56:32,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:56:32,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:56:32,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:56:32,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:56:32,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:56:32,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:56:32,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:56:32,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:56:32,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:56:32,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:56:32,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:56:32,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:56:32,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:56:32,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:56:32,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:56:32,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:56:32,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:56:32,158 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:56:32,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:56:32,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:56:32,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:56:32,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:56:32,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:56:32,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:56:32,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:56:32,162 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:56:32,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:56:32,162 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:56:32,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:56:32,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:56:32,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:56:32,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:56:32,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:56:32,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:56:32,163 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:56:32,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:56:32,165 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:56:32,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:56:32,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:56:32,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:56:32,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:56:32,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:56:32,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:56:32,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:56:32,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:56:32,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:56:32,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:56:32,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:56:32,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:56:32,171 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:56:32,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:56:32,171 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:56:32,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1568f4b0615eb98ed6bee584aeda19485d9df0ed08c84a8233a5817e939c5388 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:56:32,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:56:32,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:56:32,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:56:32,437 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:56:32,437 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:56:32,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_power.oepc.i [2023-08-30 16:56:33,458 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:56:33,631 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:56:33,631 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_power.oepc.i [2023-08-30 16:56:33,661 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47f8c6f5/f26ca436ac744aa99a427664cec36837/FLAGc2c860b3e [2023-08-30 16:56:33,676 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47f8c6f5/f26ca436ac744aa99a427664cec36837 [2023-08-30 16:56:33,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:56:33,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:56:33,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:56:33,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:56:33,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:56:33,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:56:33" (1/1) ... [2023-08-30 16:56:33,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d58a9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:33, skipping insertion in model container [2023-08-30 16:56:33,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:56:33" (1/1) ... [2023-08-30 16:56:33,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:56:33,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:56:33,886 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/safe015_power.oepc.i[995,1008] [2023-08-30 16:56:34,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:56:34,058 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:56:34,067 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/safe015_power.oepc.i[995,1008] [2023-08-30 16:56:34,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:56:34,178 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:56:34,179 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:56:34,183 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:56:34,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34 WrapperNode [2023-08-30 16:56:34,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:56:34,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:56:34,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:56:34,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:56:34,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,248 INFO L138 Inliner]: procedures = 176, calls = 86, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 228 [2023-08-30 16:56:34,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:56:34,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:56:34,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:56:34,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:56:34,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:56:34,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:56:34,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:56:34,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:56:34,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (1/1) ... [2023-08-30 16:56:34,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:56:34,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:56:34,301 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 16:56:34,335 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 16:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:56:34,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:56:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:56:34,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:56:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:56:34,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:56:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:56:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:56:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:56:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:56:34,344 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 16:56:34,478 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:56:34,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:56:34,937 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:56:35,175 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:56:35,175 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:56:35,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:56:35 BoogieIcfgContainer [2023-08-30 16:56:35,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:56:35,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:56:35,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:56:35,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:56:35,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:56:33" (1/3) ... [2023-08-30 16:56:35,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ab8829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:56:35, skipping insertion in model container [2023-08-30 16:56:35,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:34" (2/3) ... [2023-08-30 16:56:35,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ab8829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:56:35, skipping insertion in model container [2023-08-30 16:56:35,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:56:35" (3/3) ... [2023-08-30 16:56:35,183 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_power.oepc.i [2023-08-30 16:56:35,188 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:56:35,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:56:35,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 16:56:35,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:56:35,259 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:56:35,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 126 transitions, 267 flow [2023-08-30 16:56:35,323 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2023-08-30 16:56:35,323 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:56:35,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-30 16:56:35,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 126 transitions, 267 flow [2023-08-30 16:56:35,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 123 transitions, 255 flow [2023-08-30 16:56:35,332 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:56:35,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 123 transitions, 255 flow [2023-08-30 16:56:35,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 123 transitions, 255 flow [2023-08-30 16:56:35,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 123 transitions, 255 flow [2023-08-30 16:56:35,355 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2023-08-30 16:56:35,355 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:56:35,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-30 16:56:35,356 INFO L119 LiptonReduction]: Number of co-enabled transitions 1888 [2023-08-30 16:56:42,073 INFO L134 LiptonReduction]: Checked pairs total: 5236 [2023-08-30 16:56:42,073 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-30 16:56:42,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:56:42,086 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;@1cfc7f06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:56:42,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 16:56:42,089 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 16:56:42,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:56:42,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:42,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 16:56:42,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-30 16:56:42,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:42,093 INFO L85 PathProgramCache]: Analyzing trace with hash 934748511, now seen corresponding path program 1 times [2023-08-30 16:56:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534274565] [2023-08-30 16:56:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:42,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:42,412 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 16:56:42,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:42,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534274565] [2023-08-30 16:56:42,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534274565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:42,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:42,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:56:42,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242275548] [2023-08-30 16:56:42,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:42,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:56:42,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:42,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:56:42,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:56:42,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-08-30 16:56:42,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 16:56:42,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:42,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-08-30 16:56:42,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:42,813 INFO L130 PetriNetUnfolder]: 1331/1972 cut-off events. [2023-08-30 16:56:42,813 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 16:56:42,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1972 events. 1331/1972 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9403 event pairs, 141 based on Foata normal form. 0/1768 useless extension candidates. Maximal degree in co-relation 3988. Up to 1711 conditions per place. [2023-08-30 16:56:42,822 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 33 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-30 16:56:42,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 154 flow [2023-08-30 16:56:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:56:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:56:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-08-30 16:56:42,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2023-08-30 16:56:42,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-08-30 16:56:42,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-08-30 16:56:42,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:42,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-08-30 16:56:42,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 16:56:42,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 16:56:42,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 16:56:42,840 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 3 states and 365 transitions. [2023-08-30 16:56:42,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 154 flow [2023-08-30 16:56:42,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:56:42,843 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 56 flow [2023-08-30 16:56:42,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-30 16:56:42,846 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-30 16:56:42,846 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 56 flow [2023-08-30 16:56:42,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 16:56:42,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:42,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 16:56:42,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:56:42,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-30 16:56:42,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1087566374, now seen corresponding path program 1 times [2023-08-30 16:56:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433223574] [2023-08-30 16:56:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:56:42,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 16:56:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:56:42,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 16:56:42,887 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 16:56:42,888 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-30 16:56:42,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-30 16:56:42,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-30 16:56:42,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-30 16:56:42,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2023-08-30 16:56:42,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2023-08-30 16:56:42,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-30 16:56:42,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-08-30 16:56:42,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:56:42,891 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 16:56:42,894 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:56:42,895 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:56:42,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:56:42 BasicIcfg [2023-08-30 16:56:42,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:56:42,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:56:42,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:56:42,917 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:56:42,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:56:35" (3/4) ... [2023-08-30 16:56:42,918 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 16:56:42,967 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:56:42,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:56:42,968 INFO L158 Benchmark]: Toolchain (without parser) took 9289.38ms. Allocated memory was 58.7MB in the beginning and 180.4MB in the end (delta: 121.6MB). Free memory was 34.6MB in the beginning and 51.3MB in the end (delta: -16.7MB). Peak memory consumption was 105.1MB. Max. memory is 16.1GB. [2023-08-30 16:56:42,968 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 46.1MB. Free memory was 24.3MB in the beginning and 24.3MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:56:42,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.95ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.4MB in the beginning and 45.5MB in the end (delta: -11.1MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-08-30 16:56:42,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.76ms. Allocated memory is still 71.3MB. Free memory was 45.5MB in the beginning and 42.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:56:42,969 INFO L158 Benchmark]: Boogie Preprocessor took 25.27ms. Allocated memory is still 71.3MB. Free memory was 42.4MB in the beginning and 39.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:56:42,969 INFO L158 Benchmark]: RCFGBuilder took 897.55ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 39.5MB in the beginning and 36.8MB in the end (delta: 2.7MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2023-08-30 16:56:42,970 INFO L158 Benchmark]: TraceAbstraction took 7737.56ms. Allocated memory was 92.3MB in the beginning and 180.4MB in the end (delta: 88.1MB). Free memory was 36.1MB in the beginning and 57.6MB in the end (delta: -21.5MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. [2023-08-30 16:56:42,971 INFO L158 Benchmark]: Witness Printer took 50.74ms. Allocated memory is still 180.4MB. Free memory was 57.6MB in the beginning and 51.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 16:56:42,975 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 46.1MB. Free memory was 24.3MB in the beginning and 24.3MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 504.95ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.4MB in the beginning and 45.5MB in the end (delta: -11.1MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.76ms. Allocated memory is still 71.3MB. Free memory was 45.5MB in the beginning and 42.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.27ms. Allocated memory is still 71.3MB. Free memory was 42.4MB in the beginning and 39.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 897.55ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 39.5MB in the beginning and 36.8MB in the end (delta: 2.7MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7737.56ms. Allocated memory was 92.3MB in the beginning and 180.4MB in the end (delta: 88.1MB). Free memory was 36.1MB in the beginning and 57.6MB in the end (delta: -21.5MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. * Witness Printer took 50.74ms. Allocated memory is still 180.4MB. Free memory was 57.6MB in the beginning and 51.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7s, 131 PlacesBefore, 34 PlacesAfterwards, 123 TransitionsBefore, 25 TransitionsAfterwards, 1888 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 109 TotalNumberOfCompositions, 5236 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1781, independent: 1589, independent conditional: 0, independent unconditional: 1589, dependent: 192, dependent conditional: 0, dependent unconditional: 192, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1027, independent: 976, independent conditional: 0, independent unconditional: 976, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1781, independent: 613, independent conditional: 0, independent unconditional: 613, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 1027, unknown conditional: 0, unknown unconditional: 1027] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L714] 0 int __unbuffered_p2_EAX = 0; [L715] 0 _Bool __unbuffered_p2_EAX$flush_delayed; [L716] 0 int __unbuffered_p2_EAX$mem_tmp; [L717] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd0; [L718] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd1; [L719] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd2; [L720] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd3; [L721] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd0; [L722] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd1; [L723] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd2; [L724] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd3; [L725] 0 _Bool __unbuffered_p2_EAX$read_delayed; [L726] 0 int *__unbuffered_p2_EAX$read_delayed_var; [L727] 0 int __unbuffered_p2_EAX$w_buff0; [L728] 0 _Bool __unbuffered_p2_EAX$w_buff0_used; [L729] 0 int __unbuffered_p2_EAX$w_buff1; [L730] 0 _Bool __unbuffered_p2_EAX$w_buff1_used; [L731] 0 _Bool main$tmp_guard0; [L732] 0 _Bool main$tmp_guard1; [L734] 0 int x = 0; [L735] 0 _Bool x$flush_delayed; [L736] 0 int x$mem_tmp; [L737] 0 _Bool x$r_buff0_thd0; [L738] 0 _Bool x$r_buff0_thd1; [L739] 0 _Bool x$r_buff0_thd2; [L740] 0 _Bool x$r_buff0_thd3; [L741] 0 _Bool x$r_buff1_thd0; [L742] 0 _Bool x$r_buff1_thd1; [L743] 0 _Bool x$r_buff1_thd2; [L744] 0 _Bool x$r_buff1_thd3; [L745] 0 _Bool x$read_delayed; [L746] 0 int *x$read_delayed_var; [L747] 0 int x$w_buff0; [L748] 0 _Bool x$w_buff0_used; [L749] 0 int x$w_buff1; [L750] 0 _Bool x$w_buff1_used; [L752] 0 int y = 0; [L753] 0 _Bool weak$$choice0; [L754] 0 _Bool weak$$choice1; [L755] 0 _Bool weak$$choice2; [L871] 0 pthread_t t2121; [L872] FCALL, FORK 0 pthread_create(&t2121, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2121, ((void *)0), P0, ((void *)0))=-1, t2121={6:0}, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x={3:0}, y=0] [L873] 0 pthread_t t2122; [L874] FCALL, FORK 0 pthread_create(&t2122, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2122, ((void *)0), P1, ((void *)0))=0, t2121={6:0}, t2122={5:0}, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x={3:0}, y=0] [L789] 2 x$w_buff1 = x$w_buff0 [L790] 2 x$w_buff0 = 1 [L791] 2 x$w_buff1_used = x$w_buff0_used [L792] 2 x$w_buff0_used = (_Bool)1 [L793] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L793] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L794] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L795] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L796] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L797] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L798] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x={3:0}, y=0] [L801] 2 x$w_buff1 = x$w_buff0 [L802] 2 x$w_buff0 = 2 [L803] 2 x$w_buff1_used = x$w_buff0_used [L804] 2 x$w_buff0_used = (_Bool)1 [L805] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND TRUE 2 !expression [L19] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=1, x$w_buff1_used=1, x={3:0}, y=0] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 874]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 876]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 872]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 153 locations, 8 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: 7.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 1 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-30 16:56:43,025 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE