./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.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-scaling/geo1-u_unwindbound2.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 e57b7a688a4809923d49abd295c8957f721362e148c6f16fbec21211e82ecfa2 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:01:14,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:01:14,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:01:14,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:01:14,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:01:14,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:01:14,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:01:14,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:01:14,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:01:14,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:01:14,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:01:14,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:01:14,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:01:14,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:01:14,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:01:14,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:01:14,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:01:14,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:01:14,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:01:14,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:01:14,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:01:14,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:01:14,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:01:14,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:01:14,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:01:14,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:01:14,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:01:14,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:01:14,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:01:14,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:01:14,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:01:14,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:01:14,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:01:14,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:01:14,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:01:14,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:01:14,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:01:14,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:01:14,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:01:14,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:01:14,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:01:14,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:01:14,295 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:01:14,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:01:14,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:01:14,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:01:14,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:01:14,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:01:14,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:01:14,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:01:14,298 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:01:14,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:01:14,298 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:01:14,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:01:14,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:01:14,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:01:14,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:01:14,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:01:14,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:01:14,299 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:01:14,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:01:14,300 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:01:14,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:01:14,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:01:14,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:01:14,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:01:14,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:01:14,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:01:14,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:01:14,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:01:14,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:01:14,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:01:14,301 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:01:14,301 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:01:14,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:01:14,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:01:14,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e57b7a688a4809923d49abd295c8957f721362e148c6f16fbec21211e82ecfa2 [2021-12-15 11:01:14,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:01:14,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:01:14,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:01:14,518 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:01:14,519 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:01:14,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c [2021-12-15 11:01:14,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81e679c8/f1fb76f42f134f7291579795f71ebd7f/FLAG60f7a3ae2 [2021-12-15 11:01:14,865 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:01:14,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c [2021-12-15 11:01:14,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81e679c8/f1fb76f42f134f7291579795f71ebd7f/FLAG60f7a3ae2 [2021-12-15 11:01:15,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81e679c8/f1fb76f42f134f7291579795f71ebd7f [2021-12-15 11:01:15,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:01:15,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:01:15,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:01:15,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:01:15,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:01:15,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c49ebf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15, skipping insertion in model container [2021-12-15 11:01:15,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:01:15,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:01:15,487 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-scaling/geo1-u_unwindbound2.c[555,568] [2021-12-15 11:01:15,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:01:15,499 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:01:15,507 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-scaling/geo1-u_unwindbound2.c[555,568] [2021-12-15 11:01:15,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:01:15,525 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:01:15,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15 WrapperNode [2021-12-15 11:01:15,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:01:15,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:01:15,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:01:15,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:01:15,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,549 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2021-12-15 11:01:15,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:01:15,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:01:15,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:01:15,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:01:15,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:01:15,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:01:15,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:01:15,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:01:15,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (1/1) ... [2021-12-15 11:01:15,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:01:15,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:01:15,630 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 11:01:15,631 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 11:01:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:01:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:01:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:01:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:01:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:01:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:01:15,692 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:01:15,693 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:01:15,752 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:01:15,756 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:01:15,756 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:01:15,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:01:15 BoogieIcfgContainer [2021-12-15 11:01:15,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:01:15,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:01:15,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:01:15,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:01:15,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:01:15" (1/3) ... [2021-12-15 11:01:15,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749a964a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:01:15, skipping insertion in model container [2021-12-15 11:01:15,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:15" (2/3) ... [2021-12-15 11:01:15,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749a964a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:01:15, skipping insertion in model container [2021-12-15 11:01:15,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:01:15" (3/3) ... [2021-12-15 11:01:15,768 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound2.c [2021-12-15 11:01:15,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:01:15,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:01:15,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:01:15,804 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 11:01:15,804 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:01:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 11:01:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 11:01:15,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:01:15,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:01:15,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:01:15,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:01:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash 561702714, now seen corresponding path program 1 times [2021-12-15 11:01:15,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:01:15,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481086026] [2021-12-15 11:01:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:01:15,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:01:15,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:01:15,866 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 11:01:15,869 INFO L158 Benchmark]: Toolchain (without parser) took 533.37ms. Allocated memory is still 100.7MB. Free memory was 62.4MB in the beginning and 55.3MB in the end (delta: 7.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 11:01:15,870 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:01:15,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.43ms. Allocated memory is still 100.7MB. Free memory was 62.2MB in the beginning and 76.5MB in the end (delta: -14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:01:15,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.95ms. Allocated memory is still 100.7MB. Free memory was 76.5MB in the beginning and 74.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:01:15,871 INFO L158 Benchmark]: Boogie Preprocessor took 10.90ms. Allocated memory is still 100.7MB. Free memory was 74.8MB in the beginning and 73.8MB in the end (delta: 952.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:01:15,872 INFO L158 Benchmark]: RCFGBuilder took 196.56ms. Allocated memory is still 100.7MB. Free memory was 73.8MB in the beginning and 64.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:01:15,872 INFO L158 Benchmark]: TraceAbstraction took 109.75ms. Allocated memory is still 100.7MB. Free memory was 64.1MB in the beginning and 55.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:01:15,874 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 100.7MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.43ms. Allocated memory is still 100.7MB. Free memory was 62.2MB in the beginning and 76.5MB in the end (delta: -14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.95ms. Allocated memory is still 100.7MB. Free memory was 76.5MB in the beginning and 74.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.90ms. Allocated memory is still 100.7MB. Free memory was 74.8MB in the beginning and 73.8MB in the end (delta: 952.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 196.56ms. Allocated memory is still 100.7MB. Free memory was 73.8MB in the beginning and 64.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 109.75ms. Allocated memory is still 100.7MB. Free memory was 64.1MB in the beginning and 55.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:01:15,901 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-scaling/geo1-u_unwindbound2.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 e57b7a688a4809923d49abd295c8957f721362e148c6f16fbec21211e82ecfa2 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:01:17,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:01:17,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:01:17,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:01:17,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:01:17,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:01:17,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:01:17,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:01:17,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:01:17,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:01:17,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:01:17,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:01:17,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:01:17,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:01:17,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:01:17,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:01:17,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:01:17,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:01:17,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:01:17,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:01:17,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:01:17,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:01:17,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:01:17,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:01:17,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:01:17,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:01:17,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:01:17,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:01:17,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:01:17,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:01:17,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:01:17,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:01:17,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:01:17,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:01:17,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:01:17,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:01:17,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:01:17,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:01:17,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:01:17,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:01:17,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:01:17,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:01:17,684 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:01:17,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:01:17,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:01:17,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:01:17,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:01:17,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:01:17,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:01:17,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:01:17,687 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:01:17,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:01:17,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:01:17,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:01:17,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:01:17,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:01:17,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:01:17,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:01:17,689 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:01:17,689 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:01:17,689 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:01:17,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:01:17,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:01:17,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:01:17,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:01:17,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:01:17,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:01:17,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:01:17,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:01:17,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:01:17,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:01:17,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:01:17,691 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:01:17,691 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:01:17,691 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:01:17,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:01:17,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:01:17,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:01:17,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:01:17,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e57b7a688a4809923d49abd295c8957f721362e148c6f16fbec21211e82ecfa2 [2021-12-15 11:01:17,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:01:17,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:01:17,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:01:17,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:01:17,964 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:01:17,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c [2021-12-15 11:01:18,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a47fe2235/3ff8f1384364461384166bfc81949ac1/FLAGe0512725b [2021-12-15 11:01:18,402 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:01:18,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c [2021-12-15 11:01:18,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a47fe2235/3ff8f1384364461384166bfc81949ac1/FLAGe0512725b [2021-12-15 11:01:18,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a47fe2235/3ff8f1384364461384166bfc81949ac1 [2021-12-15 11:01:18,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:01:18,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:01:18,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:01:18,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:01:18,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:01:18,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:01:18" (1/1) ... [2021-12-15 11:01:18,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5120af6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:18, skipping insertion in model container [2021-12-15 11:01:18,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:01:18" (1/1) ... [2021-12-15 11:01:18,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:01:18,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:01:18,958 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-scaling/geo1-u_unwindbound2.c[555,568] [2021-12-15 11:01:18,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:01:18,993 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:01:19,039 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-scaling/geo1-u_unwindbound2.c[555,568] [2021-12-15 11:01:19,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:01:19,061 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:01:19,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19 WrapperNode [2021-12-15 11:01:19,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:01:19,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:01:19,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:01:19,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:01:19,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,089 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2021-12-15 11:01:19,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:01:19,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:01:19,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:01:19,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:01:19,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:01:19,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:01:19,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:01:19,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:01:19,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (1/1) ... [2021-12-15 11:01:19,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:01:19,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:01:19,154 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 11:01:19,172 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 11:01:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:01:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:01:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:01:19,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:01:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:01:19,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:01:19,236 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:01:19,238 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:01:19,498 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:01:19,502 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:01:19,502 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:01:19,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:01:19 BoogieIcfgContainer [2021-12-15 11:01:19,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:01:19,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:01:19,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:01:19,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:01:19,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:01:18" (1/3) ... [2021-12-15 11:01:19,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ec93a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:01:19, skipping insertion in model container [2021-12-15 11:01:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:19" (2/3) ... [2021-12-15 11:01:19,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ec93a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:01:19, skipping insertion in model container [2021-12-15 11:01:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:01:19" (3/3) ... [2021-12-15 11:01:19,509 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound2.c [2021-12-15 11:01:19,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:01:19,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:01:19,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:01:19,569 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 11:01:19,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:01:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 11:01:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 11:01:19,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:01:19,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:01:19,590 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:01:19,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:01:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash 561702714, now seen corresponding path program 1 times [2021-12-15 11:01:19,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:01:19,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493024079] [2021-12-15 11:01:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:01:19,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:01:19,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:01:19,610 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 11:01:19,612 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 11:01:19,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:01:19,852 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 11:01:19,852 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 11:01:19,857 INFO L158 Benchmark]: Toolchain (without parser) took 1008.52ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 27.8MB in the beginning and 28.6MB in the end (delta: -850.1kB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-12-15 11:01:19,858 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 33.0MB in the beginning and 32.9MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:01:19,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.50ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 27.6MB in the beginning and 48.6MB in the end (delta: -21.0MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2021-12-15 11:01:19,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.40ms. Allocated memory is still 65.0MB. Free memory was 48.6MB in the beginning and 47.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:01:19,859 INFO L158 Benchmark]: Boogie Preprocessor took 33.52ms. Allocated memory is still 65.0MB. Free memory was 47.0MB in the beginning and 46.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:01:19,860 INFO L158 Benchmark]: RCFGBuilder took 378.96ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 37.1MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:01:19,860 INFO L158 Benchmark]: TraceAbstraction took 348.71ms. Allocated memory is still 65.0MB. Free memory was 36.6MB in the beginning and 28.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:01:19,862 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 50.3MB. Free memory was 33.0MB in the beginning and 32.9MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.50ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 27.6MB in the beginning and 48.6MB in the end (delta: -21.0MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.40ms. Allocated memory is still 65.0MB. Free memory was 48.6MB in the beginning and 47.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.52ms. Allocated memory is still 65.0MB. Free memory was 47.0MB in the beginning and 46.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 378.96ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 37.1MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 348.71ms. Allocated memory is still 65.0MB. Free memory was 36.6MB in the beginning and 28.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:01:19,898 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