./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sum.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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 ../sv-benchmarks/c/reducercommutativity/sum.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 c788c1819bdb49f70cf486a187bd014d3d2cd0616eddb169336e33d9a4226f9c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 08:37:55,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 08:37:55,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 08:37:55,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 08:37:55,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 08:37:55,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 08:37:55,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 08:37:55,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 08:37:55,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 08:37:55,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 08:37:55,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 08:37:55,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 08:37:55,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 08:37:55,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 08:37:55,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 08:37:55,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 08:37:55,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 08:37:55,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 08:37:55,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 08:37:55,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 08:37:55,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 08:37:55,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 08:37:55,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 08:37:55,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 08:37:55,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 08:37:55,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 08:37:55,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 08:37:55,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 08:37:55,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 08:37:55,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 08:37:55,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 08:37:55,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 08:37:55,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 08:37:55,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 08:37:55,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 08:37:55,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 08:37:55,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 08:37:55,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 08:37:55,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 08:37:55,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 08:37:55,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 08:37:55,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 08:37:55,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 08:37:55,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 08:37:55,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 08:37:55,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 08:37:55,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 08:37:55,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 08:37:55,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 08:37:55,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 08:37:55,213 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 08:37:55,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 08:37:55,214 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 08:37:55,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 08:37:55,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 08:37:55,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 08:37:55,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 08:37:55,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 08:37:55,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 08:37:55,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 08:37:55,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 08:37:55,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 08:37:55,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 08:37:55,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 08:37:55,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 08:37:55,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 08:37:55,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:37:55,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 08:37:55,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 08:37:55,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 08:37:55,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 08:37:55,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 08:37:55,217 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 08:37:55,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 08:37:55,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 08:37:55,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 08:37:55,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c788c1819bdb49f70cf486a187bd014d3d2cd0616eddb169336e33d9a4226f9c [2021-12-15 08:37:55,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 08:37:55,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 08:37:55,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 08:37:55,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 08:37:55,445 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 08:37:55,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sum.i [2021-12-15 08:37:55,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfa46742/9be294323f754c238647987dae398f87/FLAG23c2459a1 [2021-12-15 08:37:55,892 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 08:37:55,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum.i [2021-12-15 08:37:55,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfa46742/9be294323f754c238647987dae398f87/FLAG23c2459a1 [2021-12-15 08:37:55,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfa46742/9be294323f754c238647987dae398f87 [2021-12-15 08:37:55,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 08:37:55,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 08:37:55,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 08:37:55,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 08:37:55,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 08:37:55,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:37:55" (1/1) ... [2021-12-15 08:37:55,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eacd74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:55, skipping insertion in model container [2021-12-15 08:37:55,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:37:55" (1/1) ... [2021-12-15 08:37:55,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 08:37:55,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 08:37:56,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum.i[1282,1295] [2021-12-15 08:37:56,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:37:56,065 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 08:37:56,091 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum.i[1282,1295] [2021-12-15 08:37:56,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:37:56,101 INFO L208 MainTranslator]: Completed translation [2021-12-15 08:37:56,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56 WrapperNode [2021-12-15 08:37:56,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 08:37:56,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 08:37:56,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 08:37:56,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 08:37:56,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,140 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2021-12-15 08:37:56,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 08:37:56,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 08:37:56,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 08:37:56,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 08:37:56,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 08:37:56,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 08:37:56,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 08:37:56,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 08:37:56,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (1/1) ... [2021-12-15 08:37:56,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:37:56,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:37:56,237 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) [2021-12-15 08:37:56,242 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 [2021-12-15 08:37:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 08:37:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-12-15 08:37:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-12-15 08:37:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 08:37:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 08:37:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 08:37:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 08:37:56,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 08:37:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 08:37:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 08:37:56,312 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 08:37:56,313 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 08:37:56,402 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 08:37:56,406 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 08:37:56,407 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 08:37:56,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:37:56 BoogieIcfgContainer [2021-12-15 08:37:56,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 08:37:56,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 08:37:56,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 08:37:56,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 08:37:56,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:37:55" (1/3) ... [2021-12-15 08:37:56,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3675e2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:37:56, skipping insertion in model container [2021-12-15 08:37:56,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:56" (2/3) ... [2021-12-15 08:37:56,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3675e2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:37:56, skipping insertion in model container [2021-12-15 08:37:56,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:37:56" (3/3) ... [2021-12-15 08:37:56,413 INFO L111 eAbstractionObserver]: Analyzing ICFG sum.i [2021-12-15 08:37:56,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 08:37:56,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 08:37:56,446 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 08:37:56,452 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 08:37:56,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 08:37:56,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 08:37:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 08:37:56,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:37:56,482 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:37:56,482 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:37:56,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:37:56,486 INFO L85 PathProgramCache]: Analyzing trace with hash 672214042, now seen corresponding path program 1 times [2021-12-15 08:37:56,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:37:56,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286514400] [2021-12-15 08:37:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:37:56,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:37:56,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 08:37:56,531 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 08:37:56,534 INFO L158 Benchmark]: Toolchain (without parser) took 622.46ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 64.9MB in the end (delta: 18.3MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2021-12-15 08:37:56,535 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:37:56,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.80ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 87.6MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 08:37:56,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.96ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:37:56,536 INFO L158 Benchmark]: Boogie Preprocessor took 41.48ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 84.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 08:37:56,537 INFO L158 Benchmark]: RCFGBuilder took 224.34ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 74.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 08:37:56,537 INFO L158 Benchmark]: TraceAbstraction took 124.25ms. Allocated memory is still 113.2MB. Free memory was 74.0MB in the beginning and 64.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 08:37:56,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.80ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 87.6MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.96ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.48ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 84.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 224.34ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 74.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 124.25ms. Allocated memory is still 113.2MB. Free memory was 74.0MB in the beginning and 64.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 08:37:56,563 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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 ../sv-benchmarks/c/reducercommutativity/sum.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 c788c1819bdb49f70cf486a187bd014d3d2cd0616eddb169336e33d9a4226f9c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 08:37:58,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 08:37:58,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 08:37:58,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 08:37:58,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 08:37:58,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 08:37:58,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 08:37:58,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 08:37:58,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 08:37:58,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 08:37:58,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 08:37:58,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 08:37:58,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 08:37:58,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 08:37:58,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 08:37:58,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 08:37:58,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 08:37:58,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 08:37:58,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 08:37:58,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 08:37:58,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 08:37:58,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 08:37:58,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 08:37:58,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 08:37:58,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 08:37:58,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 08:37:58,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 08:37:58,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 08:37:58,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 08:37:58,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 08:37:58,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 08:37:58,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 08:37:58,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 08:37:58,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 08:37:58,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 08:37:58,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 08:37:58,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 08:37:58,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 08:37:58,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 08:37:58,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 08:37:58,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 08:37:58,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 08:37:58,354 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 08:37:58,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 08:37:58,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 08:37:58,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 08:37:58,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 08:37:58,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 08:37:58,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 08:37:58,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 08:37:58,358 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 08:37:58,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 08:37:58,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 08:37:58,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 08:37:58,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 08:37:58,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 08:37:58,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 08:37:58,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 08:37:58,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 08:37:58,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 08:37:58,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 08:37:58,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 08:37:58,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 08:37:58,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 08:37:58,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 08:37:58,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 08:37:58,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 08:37:58,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 08:37:58,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:37:58,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 08:37:58,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 08:37:58,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 08:37:58,362 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 08:37:58,362 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 08:37:58,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 08:37:58,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 08:37:58,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 08:37:58,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 08:37:58,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 08:37:58,363 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c788c1819bdb49f70cf486a187bd014d3d2cd0616eddb169336e33d9a4226f9c [2021-12-15 08:37:58,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 08:37:58,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 08:37:58,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 08:37:58,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 08:37:58,664 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 08:37:58,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sum.i [2021-12-15 08:37:58,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f741dde4/4f89123814084cb78c29cb723731cbeb/FLAGea343aace [2021-12-15 08:37:59,114 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 08:37:59,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum.i [2021-12-15 08:37:59,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f741dde4/4f89123814084cb78c29cb723731cbeb/FLAGea343aace [2021-12-15 08:37:59,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f741dde4/4f89123814084cb78c29cb723731cbeb [2021-12-15 08:37:59,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 08:37:59,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 08:37:59,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 08:37:59,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 08:37:59,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 08:37:59,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38395cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59, skipping insertion in model container [2021-12-15 08:37:59,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 08:37:59,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 08:37:59,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum.i[1282,1295] [2021-12-15 08:37:59,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:37:59,304 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 08:37:59,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum.i[1282,1295] [2021-12-15 08:37:59,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:37:59,346 INFO L208 MainTranslator]: Completed translation [2021-12-15 08:37:59,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59 WrapperNode [2021-12-15 08:37:59,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 08:37:59,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 08:37:59,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 08:37:59,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 08:37:59,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,376 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2021-12-15 08:37:59,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 08:37:59,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 08:37:59,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 08:37:59,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 08:37:59,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 08:37:59,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 08:37:59,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 08:37:59,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 08:37:59,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (1/1) ... [2021-12-15 08:37:59,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:37:59,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:37:59,416 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) [2021-12-15 08:37:59,418 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 [2021-12-15 08:37:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 08:37:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 08:37:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-12-15 08:37:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-12-15 08:37:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 08:37:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 08:37:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 08:37:59,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 08:37:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 08:37:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 08:37:59,526 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 08:37:59,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 08:37:59,714 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 08:37:59,718 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 08:37:59,720 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 08:37:59,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:37:59 BoogieIcfgContainer [2021-12-15 08:37:59,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 08:37:59,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 08:37:59,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 08:37:59,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 08:37:59,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:37:59" (1/3) ... [2021-12-15 08:37:59,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db00bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:37:59, skipping insertion in model container [2021-12-15 08:37:59,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:37:59" (2/3) ... [2021-12-15 08:37:59,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db00bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:37:59, skipping insertion in model container [2021-12-15 08:37:59,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:37:59" (3/3) ... [2021-12-15 08:37:59,728 INFO L111 eAbstractionObserver]: Analyzing ICFG sum.i [2021-12-15 08:37:59,732 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 08:37:59,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 08:37:59,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 08:37:59,799 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 08:37:59,799 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 08:37:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 08:37:59,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 08:37:59,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:37:59,826 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:37:59,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:37:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:37:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash 672214042, now seen corresponding path program 1 times [2021-12-15 08:37:59,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 08:37:59,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976623805] [2021-12-15 08:37:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:37:59,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 08:37:59,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 08:37:59,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 08:37:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 08:37:59,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 08:38:00,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 08:38:00,094 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 08:38:00,096 INFO L158 Benchmark]: Toolchain (without parser) took 958.24ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 29.9MB in the beginning and 51.6MB in the end (delta: -21.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:38:00,097 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory was 34.0MB in the beginning and 34.0MB in the end (delta: 38.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:38:00,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.55ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 29.7MB in the beginning and 56.7MB in the end (delta: -27.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-12-15 08:38:00,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.99ms. Allocated memory is still 73.4MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:38:00,098 INFO L158 Benchmark]: Boogie Preprocessor took 16.93ms. Allocated memory is still 73.4MB. Free memory was 54.9MB in the beginning and 53.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 08:38:00,098 INFO L158 Benchmark]: RCFGBuilder took 327.57ms. Allocated memory is still 73.4MB. Free memory was 53.6MB in the beginning and 43.3MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 08:38:00,099 INFO L158 Benchmark]: TraceAbstraction took 371.49ms. Allocated memory is still 73.4MB. Free memory was 42.7MB in the beginning and 51.6MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:38:00,101 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 52.4MB. Free memory was 34.0MB in the beginning and 34.0MB in the end (delta: 38.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.55ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 29.7MB in the beginning and 56.7MB in the end (delta: -27.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.99ms. Allocated memory is still 73.4MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.93ms. Allocated memory is still 73.4MB. Free memory was 54.9MB in the beginning and 53.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.57ms. Allocated memory is still 73.4MB. Free memory was 53.6MB in the beginning and 43.3MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 371.49ms. Allocated memory is still 73.4MB. Free memory was 42.7MB in the beginning and 51.6MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 08:38:00,124 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: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable