./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/fermat2-ll.c --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/nla-digbench/fermat2-ll.c -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 43c7c57321afe9055366ca260a89f0e4de96718cc528ce2ea2543b13c4af6ed7 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:58:52,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:58:52,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:58:52,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:58:52,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:58:52,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:58:52,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:58:52,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:58:52,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:58:52,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:58:52,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:58:52,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:58:52,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:58:52,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:58:52,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:58:52,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:58:52,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:58:52,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:58:52,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:58:52,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:58:52,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:58:52,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:58:52,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:58:52,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:58:52,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:58:52,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:58:52,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:58:52,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:58:52,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:58:52,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:58:52,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:58:52,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:58:52,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:58:52,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:58:52,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:58:52,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:58:52,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:58:52,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:58:52,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:58:52,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:58:52,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:58:52,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:58:52,525 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:58:52,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:58:52,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:58:52,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:58:52,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:58:52,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:58:52,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:58:52,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:58:52,528 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:58:52,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:58:52,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:58:52,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:58:52,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:58:52,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:58:52,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:58:52,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:58:52,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:58:52,530 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:58:52,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:58:52,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:58:52,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:58:52,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:58:52,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:58:52,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:58:52,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:58:52,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:58:52,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:58:52,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:58:52,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:58:52,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:58:52,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:58:52,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:58:52,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:58:52,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:58:52,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c7c57321afe9055366ca260a89f0e4de96718cc528ce2ea2543b13c4af6ed7 [2021-12-15 10:58:52,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:58:52,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:58:52,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:58:52,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:58:52,787 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:58:52,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/fermat2-ll.c [2021-12-15 10:58:52,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b21a8d3f/334974c695a74ae2b57e3de2933c6994/FLAG9476d6e41 [2021-12-15 10:58:53,167 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:58:53,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat2-ll.c [2021-12-15 10:58:53,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b21a8d3f/334974c695a74ae2b57e3de2933c6994/FLAG9476d6e41 [2021-12-15 10:58:53,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b21a8d3f/334974c695a74ae2b57e3de2933c6994 [2021-12-15 10:58:53,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:58:53,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:58:53,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:58:53,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:58:53,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:58:53,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52623d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53, skipping insertion in model container [2021-12-15 10:58:53,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:58:53,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:58:53,339 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/nla-digbench/fermat2-ll.c[524,537] [2021-12-15 10:58:53,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:58:53,359 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:58:53,369 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/nla-digbench/fermat2-ll.c[524,537] [2021-12-15 10:58:53,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:58:53,392 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:58:53,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53 WrapperNode [2021-12-15 10:58:53,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:58:53,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:58:53,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:58:53,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:58:53,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,419 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2021-12-15 10:58:53,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:58:53,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:58:53,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:58:53,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:58:53,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:58:53,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:58:53,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:58:53,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:58:53,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (1/1) ... [2021-12-15 10:58:53,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:58:53,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:58:53,478 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 10:58:53,512 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 10:58:53,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:58:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 10:58:53,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 10:58:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:58:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:58:53,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:58:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:58:53,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:58:53,564 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:58:53,565 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:58:53,646 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:58:53,663 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:58:53,663 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 10:58:53,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:53 BoogieIcfgContainer [2021-12-15 10:58:53,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:58:53,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:58:53,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:58:53,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:58:53,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:58:53" (1/3) ... [2021-12-15 10:58:53,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428be9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:53, skipping insertion in model container [2021-12-15 10:58:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:53" (2/3) ... [2021-12-15 10:58:53,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428be9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:53, skipping insertion in model container [2021-12-15 10:58:53,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:53" (3/3) ... [2021-12-15 10:58:53,675 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll.c [2021-12-15 10:58:53,679 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:58:53,679 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:58:53,709 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:58:53,714 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 10:58:53,714 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:58:53,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 10:58:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 10:58:53,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:58:53,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:58:53,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:58:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:58:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1928678447, now seen corresponding path program 1 times [2021-12-15 10:58:53,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:58:53,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918485145] [2021-12-15 10:58:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:58:53,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:58:53,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:58:53,809 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 10:58:53,817 INFO L158 Benchmark]: Toolchain (without parser) took 625.32ms. Allocated memory is still 104.9MB. Free memory was 77.7MB in the beginning and 59.9MB in the end (delta: 17.8MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-12-15 10:58:53,818 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:58:53,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.38ms. Allocated memory is still 104.9MB. Free memory was 77.7MB in the beginning and 81.3MB in the end (delta: -3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:58:53,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.76ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 79.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:58:53,820 INFO L158 Benchmark]: Boogie Preprocessor took 32.21ms. Allocated memory is still 104.9MB. Free memory was 79.7MB in the beginning and 78.8MB in the end (delta: 916.4kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 10:58:53,821 INFO L158 Benchmark]: RCFGBuilder took 211.71ms. Allocated memory is still 104.9MB. Free memory was 78.8MB in the beginning and 69.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:58:53,822 INFO L158 Benchmark]: TraceAbstraction took 148.69ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 59.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:58:53,828 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 104.9MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.38ms. Allocated memory is still 104.9MB. Free memory was 77.7MB in the beginning and 81.3MB in the end (delta: -3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.76ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 79.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.21ms. Allocated memory is still 104.9MB. Free memory was 79.7MB in the beginning and 78.8MB in the end (delta: 916.4kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 211.71ms. Allocated memory is still 104.9MB. Free memory was 78.8MB in the beginning and 69.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 148.69ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 59.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. 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 10:58:53,874 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/nla-digbench/fermat2-ll.c -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 43c7c57321afe9055366ca260a89f0e4de96718cc528ce2ea2543b13c4af6ed7 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:58:55,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:58:55,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:58:55,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:58:55,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:58:55,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:58:55,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:58:55,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:58:55,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:58:55,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:58:55,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:58:55,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:58:55,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:58:55,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:58:55,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:58:55,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:58:55,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:58:55,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:58:55,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:58:55,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:58:55,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:58:55,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:58:55,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:58:55,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:58:55,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:58:55,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:58:55,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:58:55,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:58:55,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:58:55,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:58:55,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:58:55,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:58:55,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:58:55,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:58:55,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:58:55,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:58:55,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:58:55,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:58:55,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:58:55,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:58:55,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:58:55,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:58:55,725 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:58:55,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:58:55,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:58:55,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:58:55,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:58:55,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:58:55,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:58:55,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:58:55,729 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:58:55,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:58:55,729 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:58:55,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:58:55,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:58:55,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:58:55,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:58:55,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:58:55,730 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:58:55,730 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:58:55,730 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:58:55,731 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:58:55,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:58:55,731 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:58:55,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:58:55,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:58:55,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:58:55,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:58:55,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:58:55,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:58:55,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:58:55,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:58:55,732 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:58:55,732 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:58:55,733 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:58:55,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:58:55,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:58:55,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:58:55,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:58:55,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c7c57321afe9055366ca260a89f0e4de96718cc528ce2ea2543b13c4af6ed7 [2021-12-15 10:58:55,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:58:56,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:58:56,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:58:56,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:58:56,024 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:58:56,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/fermat2-ll.c [2021-12-15 10:58:56,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f687ecaa8/b0aef789193d4e05be6eb1a0f7055156/FLAGe526fe620 [2021-12-15 10:58:56,473 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:58:56,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat2-ll.c [2021-12-15 10:58:56,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f687ecaa8/b0aef789193d4e05be6eb1a0f7055156/FLAGe526fe620 [2021-12-15 10:58:56,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f687ecaa8/b0aef789193d4e05be6eb1a0f7055156 [2021-12-15 10:58:56,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:58:56,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:58:56,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:58:56,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:58:56,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:58:56,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:56" (1/1) ... [2021-12-15 10:58:56,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e49da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:56, skipping insertion in model container [2021-12-15 10:58:56,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:56" (1/1) ... [2021-12-15 10:58:56,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:58:56,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:58:57,032 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/nla-digbench/fermat2-ll.c[524,537] [2021-12-15 10:58:57,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:58:57,086 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:58:57,095 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/nla-digbench/fermat2-ll.c[524,537] [2021-12-15 10:58:57,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:58:57,111 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:58:57,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57 WrapperNode [2021-12-15 10:58:57,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:58:57,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:58:57,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:58:57,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:58:57,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,135 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2021-12-15 10:58:57,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:58:57,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:58:57,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:58:57,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:58:57,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:58:57,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:58:57,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:58:57,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:58:57,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (1/1) ... [2021-12-15 10:58:57,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:58:57,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:58:57,193 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 10:58:57,206 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 10:58:57,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:58:57,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:58:57,228 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 10:58:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 10:58:57,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:58:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:58:57,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:58:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:58:57,284 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:58:57,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:58:57,465 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:58:57,473 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:58:57,474 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 10:58:57,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:57 BoogieIcfgContainer [2021-12-15 10:58:57,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:58:57,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:58:57,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:58:57,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:58:57,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:58:56" (1/3) ... [2021-12-15 10:58:57,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51263786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:57, skipping insertion in model container [2021-12-15 10:58:57,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:57" (2/3) ... [2021-12-15 10:58:57,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51263786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:57, skipping insertion in model container [2021-12-15 10:58:57,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:57" (3/3) ... [2021-12-15 10:58:57,483 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll.c [2021-12-15 10:58:57,487 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:58:57,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:58:57,545 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:58:57,553 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 10:58:57,553 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:58:57,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 10:58:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 10:58:57,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:58:57,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:58:57,580 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:58:57,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:58:57,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1928678447, now seen corresponding path program 1 times [2021-12-15 10:58:57,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:58:57,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745868435] [2021-12-15 10:58:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:58:57,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:58:57,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:58:57,597 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 10:58:57,598 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 10:58:57,631 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 10:58:57,829 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 10:58:57,829 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 10:58:57,835 INFO L158 Benchmark]: Toolchain (without parser) took 933.81ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 38.0MB in the beginning and 51.2MB in the end (delta: -13.2MB). Peak memory consumption was 131.0kB. Max. memory is 16.1GB. [2021-12-15 10:58:57,836 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:58:57,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.08ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 41.4MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 10:58:57,837 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.28ms. Allocated memory is still 58.7MB. Free memory was 41.4MB in the beginning and 39.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:58:57,837 INFO L158 Benchmark]: Boogie Preprocessor took 16.58ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 38.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:58:57,842 INFO L158 Benchmark]: RCFGBuilder took 322.58ms. Allocated memory is still 58.7MB. Free memory was 38.7MB in the beginning and 29.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:58:57,842 INFO L158 Benchmark]: TraceAbstraction took 356.56ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 29.0MB in the beginning and 51.2MB in the end (delta: -22.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:58:57,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.08ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 41.4MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.28ms. Allocated memory is still 58.7MB. Free memory was 41.4MB in the beginning and 39.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.58ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 38.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.58ms. Allocated memory is still 58.7MB. Free memory was 38.7MB in the beginning and 29.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 356.56ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 29.0MB in the beginning and 51.2MB in the end (delta: -22.2MB). 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 10:58:57,879 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