./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/tree-2.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/heap-manipulation/tree-2.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 ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:42:51,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:42:51,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:42:51,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:42:51,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:42:51,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:42:51,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:42:51,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:42:51,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:42:51,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:42:51,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:42:51,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:42:51,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:42:51,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:42:51,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:42:51,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:42:51,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:42:51,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:42:51,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:42:51,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:42:51,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:42:51,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:42:51,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:42:52,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:42:52,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:42:52,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:42:52,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:42:52,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:42:52,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:42:52,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:42:52,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:42:52,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:42:52,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:42:52,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:42:52,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:42:52,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:42:52,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:42:52,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:42:52,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:42:52,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:42:52,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:42:52,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:42:52,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:42:52,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:42:52,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:42:52,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:42:52,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:42:52,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:42:52,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:42:52,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:42:52,038 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:42:52,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:42:52,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:42:52,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:42:52,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:42:52,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:42:52,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:42:52,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:42:52,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:42:52,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:42:52,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:42:52,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:42:52,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:42:52,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:42:52,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:42:52,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:42:52,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:42:52,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:42:52,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:42:52,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:42:52,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:42:52,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:42:52,043 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:42:52,043 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:42:52,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:42:52,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:42:52,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a [2021-12-15 10:42:52,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:42:52,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:42:52,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:42:52,254 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:42:52,254 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:42:52,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-2.i [2021-12-15 10:42:52,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a122a051d/f75982ad6e7b4414a0709b04ce0206ee/FLAGc56a959c5 [2021-12-15 10:42:52,708 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:42:52,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-2.i [2021-12-15 10:42:52,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a122a051d/f75982ad6e7b4414a0709b04ce0206ee/FLAGc56a959c5 [2021-12-15 10:42:52,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a122a051d/f75982ad6e7b4414a0709b04ce0206ee [2021-12-15 10:42:52,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:42:52,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:42:52,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:42:52,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:42:52,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:42:52,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:42:52" (1/1) ... [2021-12-15 10:42:52,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5670811d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:52, skipping insertion in model container [2021-12-15 10:42:52,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:42:52" (1/1) ... [2021-12-15 10:42:52,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:42:52,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:42:52,963 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/heap-manipulation/tree-2.i[22626,22639] [2021-12-15 10:42:52,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:42:52,999 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:42:53,034 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/heap-manipulation/tree-2.i[22626,22639] [2021-12-15 10:42:53,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:42:53,057 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:42:53,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53 WrapperNode [2021-12-15 10:42:53,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:42:53,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:42:53,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:42:53,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:42:53,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,098 INFO L137 Inliner]: procedures = 122, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2021-12-15 10:42:53,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:42:53,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:42:53,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:42:53,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:42:53,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:42:53,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:42:53,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:42:53,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:42:53,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (1/1) ... [2021-12-15 10:42:53,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:42:53,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:42:53,170 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 10:42:53,179 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 10:42:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 10:42:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-15 10:42:53,196 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-15 10:42:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 10:42:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 10:42:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:42:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 10:42:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 10:42:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:42:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:42:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:42:53,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:42:53,290 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:42:53,291 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:42:53,502 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:42:53,507 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:42:53,507 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-15 10:42:53,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:42:53 BoogieIcfgContainer [2021-12-15 10:42:53,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:42:53,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:42:53,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:42:53,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:42:53,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:42:52" (1/3) ... [2021-12-15 10:42:53,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43641821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:42:53, skipping insertion in model container [2021-12-15 10:42:53,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:53" (2/3) ... [2021-12-15 10:42:53,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43641821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:42:53, skipping insertion in model container [2021-12-15 10:42:53,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:42:53" (3/3) ... [2021-12-15 10:42:53,539 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-2.i [2021-12-15 10:42:53,543 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:42:53,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:42:53,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:42:53,580 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 10:42:53,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:42:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 43 states have internal predecessors, (67), 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 10:42:53,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 10:42:53,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:42:53,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:42:53,597 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:42:53,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:42:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1702518859, now seen corresponding path program 1 times [2021-12-15 10:42:53,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:42:53,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432133128] [2021-12-15 10:42:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:42:53,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:42:53,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:42:53,653 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 10:42:53,658 INFO L158 Benchmark]: Toolchain (without parser) took 925.59ms. Allocated memory was 83.9MB in the beginning and 111.1MB in the end (delta: 27.3MB). Free memory was 51.0MB in the beginning and 79.1MB in the end (delta: -28.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:42:53,659 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:42:53,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.24ms. Allocated memory is still 83.9MB. Free memory was 50.8MB in the beginning and 53.6MB in the end (delta: -2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:42:53,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.48ms. Allocated memory is still 83.9MB. Free memory was 53.3MB in the beginning and 51.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:42:53,661 INFO L158 Benchmark]: Boogie Preprocessor took 39.90ms. Allocated memory is still 83.9MB. Free memory was 51.2MB in the beginning and 49.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:42:53,662 INFO L158 Benchmark]: RCFGBuilder took 368.79ms. Allocated memory is still 83.9MB. Free memory was 49.5MB in the beginning and 32.9MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-15 10:42:53,665 INFO L158 Benchmark]: TraceAbstraction took 146.15ms. Allocated memory was 83.9MB in the beginning and 111.1MB in the end (delta: 27.3MB). Free memory was 32.6MB in the beginning and 79.1MB in the end (delta: -46.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:42:53,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.24ms. Allocated memory is still 83.9MB. Free memory was 50.8MB in the beginning and 53.6MB in the end (delta: -2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.48ms. Allocated memory is still 83.9MB. Free memory was 53.3MB in the beginning and 51.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.90ms. Allocated memory is still 83.9MB. Free memory was 51.2MB in the beginning and 49.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 368.79ms. Allocated memory is still 83.9MB. Free memory was 49.5MB in the beginning and 32.9MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 146.15ms. Allocated memory was 83.9MB in the beginning and 111.1MB in the end (delta: 27.3MB). Free memory was 32.6MB in the beginning and 79.1MB in the end (delta: -46.5MB). 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 10:42:53,719 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 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/heap-manipulation/tree-2.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 ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:42:55,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:42:55,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:42:55,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:42:55,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:42:55,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:42:55,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:42:55,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:42:55,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:42:55,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:42:55,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:42:55,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:42:55,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:42:55,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:42:55,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:42:55,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:42:55,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:42:55,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:42:55,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:42:55,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:42:55,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:42:55,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:42:55,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:42:55,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:42:55,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:42:55,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:42:55,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:42:55,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:42:55,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:42:55,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:42:55,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:42:55,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:42:55,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:42:55,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:42:55,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:42:55,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:42:55,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:42:55,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:42:55,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:42:55,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:42:55,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:42:55,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:42:55,602 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:42:55,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:42:55,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:42:55,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:42:55,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:42:55,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:42:55,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:42:55,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:42:55,604 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:42:55,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:42:55,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:42:55,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:42:55,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:42:55,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:42:55,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:42:55,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:42:55,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:42:55,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:42:55,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:42:55,606 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:42:55,606 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:42:55,606 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:42:55,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:42:55,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:42:55,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:42:55,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:42:55,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a [2021-12-15 10:42:55,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:42:55,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:42:55,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:42:55,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:42:55,910 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:42:55,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-2.i [2021-12-15 10:42:55,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a64b8932/30a0d572d4144cca9d66b6eee7f73205/FLAG6a2fe3876 [2021-12-15 10:42:56,396 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:42:56,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-2.i [2021-12-15 10:42:56,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a64b8932/30a0d572d4144cca9d66b6eee7f73205/FLAG6a2fe3876 [2021-12-15 10:42:56,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a64b8932/30a0d572d4144cca9d66b6eee7f73205 [2021-12-15 10:42:56,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:42:56,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:42:56,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:42:56,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:42:56,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:42:56,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:42:56" (1/1) ... [2021-12-15 10:42:56,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331b58fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:56, skipping insertion in model container [2021-12-15 10:42:56,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:42:56" (1/1) ... [2021-12-15 10:42:56,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:42:56,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:42:57,038 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/heap-manipulation/tree-2.i[22626,22639] [2021-12-15 10:42:57,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:42:57,064 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:42:57,095 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/heap-manipulation/tree-2.i[22626,22639] [2021-12-15 10:42:57,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:42:57,121 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:42:57,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57 WrapperNode [2021-12-15 10:42:57,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:42:57,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:42:57,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:42:57,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:42:57,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,170 INFO L137 Inliner]: procedures = 125, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2021-12-15 10:42:57,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:42:57,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:42:57,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:42:57,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:42:57,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:42:57,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:42:57,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:42:57,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:42:57,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (1/1) ... [2021-12-15 10:42:57,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:42:57,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:42:57,286 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 10:42:57,307 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 10:42:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 10:42:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-15 10:42:57,320 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-15 10:42:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 10:42:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:42:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 10:42:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 10:42:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:42:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 10:42:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:42:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:42:57,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:42:57,451 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:42:57,452 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:42:58,000 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:42:58,004 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:42:58,005 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-15 10:42:58,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:42:58 BoogieIcfgContainer [2021-12-15 10:42:58,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:42:58,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:42:58,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:42:58,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:42:58,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:42:56" (1/3) ... [2021-12-15 10:42:58,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ac9a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:42:58, skipping insertion in model container [2021-12-15 10:42:58,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:42:57" (2/3) ... [2021-12-15 10:42:58,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ac9a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:42:58, skipping insertion in model container [2021-12-15 10:42:58,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:42:58" (3/3) ... [2021-12-15 10:42:58,012 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-2.i [2021-12-15 10:42:58,016 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:42:58,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:42:58,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:42:58,073 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 10:42:58,073 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:42:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 38 states have (on average 1.736842105263158) internal successors, (66), 42 states have internal predecessors, (66), 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 10:42:58,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 10:42:58,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:42:58,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:42:58,092 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:42:58,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:42:58,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2031773726, now seen corresponding path program 1 times [2021-12-15 10:42:58,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:42:58,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764471648] [2021-12-15 10:42:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:42:58,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:42:58,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:42:58,125 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 10:42:58,126 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 10:42:58,168 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 10:42:58,365 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 10:42:58,366 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 10:42:58,369 INFO L158 Benchmark]: Toolchain (without parser) took 1576.93ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 34.2MB in the beginning and 48.0MB in the end (delta: -13.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 10:42:58,370 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:42:58,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.38ms. Allocated memory is still 56.6MB. Free memory was 34.1MB in the beginning and 31.5MB in the end (delta: 2.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 10:42:58,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.26ms. Allocated memory is still 56.6MB. Free memory was 31.5MB in the beginning and 29.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:42:58,371 INFO L158 Benchmark]: Boogie Preprocessor took 59.71ms. Allocated memory is still 56.6MB. Free memory was 29.3MB in the beginning and 27.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:42:58,371 INFO L158 Benchmark]: RCFGBuilder took 774.64ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 27.2MB in the beginning and 40.0MB in the end (delta: -12.8MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-15 10:42:58,371 INFO L158 Benchmark]: TraceAbstraction took 360.16ms. Allocated memory is still 73.4MB. Free memory was 39.5MB in the beginning and 48.0MB in the end (delta: -8.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:42:58,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.38ms. Allocated memory is still 56.6MB. Free memory was 34.1MB in the beginning and 31.5MB in the end (delta: 2.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.26ms. Allocated memory is still 56.6MB. Free memory was 31.5MB in the beginning and 29.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.71ms. Allocated memory is still 56.6MB. Free memory was 29.3MB in the beginning and 27.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 774.64ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 27.2MB in the beginning and 40.0MB in the end (delta: -12.8MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * TraceAbstraction took 360.16ms. Allocated memory is still 73.4MB. Free memory was 39.5MB in the beginning and 48.0MB in the end (delta: -8.5MB). 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 10:42:58,404 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