./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_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/bresenham-ll_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 a69d5fb397906cd89c0147a3c54d3ad7658561b03775140fca8816654a2bbc3d --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:59:09,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:59:09,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:59:09,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:59:09,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:59:09,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:59:09,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:59:09,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:59:09,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:59:09,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:59:09,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:59:09,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:59:09,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:59:09,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:59:09,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:59:09,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:59:09,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:59:09,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:59:09,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:59:09,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:59:09,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:59:09,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:59:09,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:59:09,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:59:09,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:59:09,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:59:09,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:59:09,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:59:09,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:59:09,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:59:09,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:59:09,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:59:09,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:59:09,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:59:09,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:59:09,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:59:09,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:59:09,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:59:09,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:59:09,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:59:09,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:59:09,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:59:09,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:59:09,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:59:09,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:59:09,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:59:09,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:59:09,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:59:09,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:59:09,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:59:09,515 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:59:09,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:59:09,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:59:09,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:59:09,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:59:09,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:59:09,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:59:09,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:59:09,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:59:09,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:59:09,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:59:09,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:59:09,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:59:09,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:59:09,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:59:09,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:59:09,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:09,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:59:09,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:59:09,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:59:09,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:59:09,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:59:09,519 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:59:09,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:59:09,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:59:09,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:59:09,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a69d5fb397906cd89c0147a3c54d3ad7658561b03775140fca8816654a2bbc3d [2021-12-15 10:59:09,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:59:09,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:59:09,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:59:09,750 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:59:09,750 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:59:09,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-12-15 10:59:09,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aec178ae/4121c01e5a79453080d281e1ba3eefff/FLAG06685fe54 [2021-12-15 10:59:10,112 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:59:10,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-12-15 10:59:10,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aec178ae/4121c01e5a79453080d281e1ba3eefff/FLAG06685fe54 [2021-12-15 10:59:10,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aec178ae/4121c01e5a79453080d281e1ba3eefff [2021-12-15 10:59:10,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:59:10,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:59:10,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:10,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:59:10,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:59:10,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c756b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10, skipping insertion in model container [2021-12-15 10:59:10,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:59:10,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:59:10,679 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/bresenham-ll_unwindbound2.c[597,610] [2021-12-15 10:59:10,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:10,709 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:59:10,719 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/bresenham-ll_unwindbound2.c[597,610] [2021-12-15 10:59:10,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:10,735 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:59:10,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10 WrapperNode [2021-12-15 10:59:10,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:10,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:10,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:59:10,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:59:10,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,763 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-12-15 10:59:10,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:10,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:59:10,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:59:10,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:59:10,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:59:10,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:59:10,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:59:10,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:59:10,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (1/1) ... [2021-12-15 10:59:10,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:10,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:59:10,837 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 10:59:10,856 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 10:59:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:59:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:59:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:59:10,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:59:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:59:10,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:59:10,912 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:59:10,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:59:11,035 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:59:11,039 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:59:11,039 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 10:59:11,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:11 BoogieIcfgContainer [2021-12-15 10:59:11,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:59:11,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:59:11,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:59:11,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:59:11,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:59:10" (1/3) ... [2021-12-15 10:59:11,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298453b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:11, skipping insertion in model container [2021-12-15 10:59:11,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:10" (2/3) ... [2021-12-15 10:59:11,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298453b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:11, skipping insertion in model container [2021-12-15 10:59:11,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:11" (3/3) ... [2021-12-15 10:59:11,061 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound2.c [2021-12-15 10:59:11,065 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:59:11,065 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:59:11,108 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:59:11,113 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 10:59:11,113 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:59:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 10:59:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:59:11,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:59:11,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:59:11,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:59:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:59:11,130 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2021-12-15 10:59:11,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:59:11,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644145369] [2021-12-15 10:59:11,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:59:11,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:59:11,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:59:11,172 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 10:59:11,176 INFO L158 Benchmark]: Toolchain (without parser) took 625.19ms. Allocated memory is still 111.1MB. Free memory was 82.8MB in the beginning and 64.2MB in the end (delta: 18.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2021-12-15 10:59:11,176 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory was 68.1MB in the beginning and 68.1MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:11,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.44ms. Allocated memory is still 111.1MB. Free memory was 82.8MB in the beginning and 85.6MB in the end (delta: -2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:11,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.38ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 84.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:59:11,178 INFO L158 Benchmark]: Boogie Preprocessor took 24.24ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 83.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:11,179 INFO L158 Benchmark]: RCFGBuilder took 266.88ms. Allocated memory is still 111.1MB. Free memory was 83.0MB in the beginning and 73.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:59:11,179 INFO L158 Benchmark]: TraceAbstraction took 118.29ms. Allocated memory is still 111.1MB. Free memory was 73.0MB in the beginning and 64.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:11,196 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 111.1MB. Free memory was 68.1MB in the beginning and 68.1MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.44ms. Allocated memory is still 111.1MB. Free memory was 82.8MB in the beginning and 85.6MB in the end (delta: -2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.38ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 84.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.24ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 83.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 266.88ms. Allocated memory is still 111.1MB. Free memory was 83.0MB in the beginning and 73.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 118.29ms. Allocated memory is still 111.1MB. Free memory was 73.0MB in the beginning and 64.2MB in the end (delta: 8.8MB). 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 10:59:11,225 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/bresenham-ll_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 a69d5fb397906cd89c0147a3c54d3ad7658561b03775140fca8816654a2bbc3d --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:59:13,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:59:13,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:59:13,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:59:13,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:59:13,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:59:13,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:59:13,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:59:13,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:59:13,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:59:13,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:59:13,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:59:13,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:59:13,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:59:13,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:59:13,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:59:13,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:59:13,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:59:13,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:59:13,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:59:13,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:59:13,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:59:13,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:59:13,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:59:13,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:59:13,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:59:13,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:59:13,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:59:13,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:59:13,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:59:13,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:59:13,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:59:13,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:59:13,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:59:13,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:59:13,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:59:13,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:59:13,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:59:13,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:59:13,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:59:13,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:59:13,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:59:13,373 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:59:13,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:59:13,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:59:13,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:59:13,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:59:13,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:59:13,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:59:13,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:59:13,376 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:59:13,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:59:13,377 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:59:13,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:59:13,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:59:13,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:59:13,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:59:13,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:59:13,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:59:13,378 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:59:13,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:59:13,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:59:13,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:59:13,379 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:59:13,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:59:13,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:59:13,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:59:13,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:59:13,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:13,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:59:13,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:59:13,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:59:13,380 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:59:13,381 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:59:13,381 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:59:13,381 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:59:13,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:59:13,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:59:13,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:59:13,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a69d5fb397906cd89c0147a3c54d3ad7658561b03775140fca8816654a2bbc3d [2021-12-15 10:59:13,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:59:13,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:59:13,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:59:13,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:59:13,795 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:59:13,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-12-15 10:59:13,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aef0cf2f/08ab4f277dc54e6599e4ed9474b5d5c1/FLAGa70b2d9b1 [2021-12-15 10:59:14,307 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:59:14,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-12-15 10:59:14,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aef0cf2f/08ab4f277dc54e6599e4ed9474b5d5c1/FLAGa70b2d9b1 [2021-12-15 10:59:14,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aef0cf2f/08ab4f277dc54e6599e4ed9474b5d5c1 [2021-12-15 10:59:14,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:59:14,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:59:14,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:14,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:59:14,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:59:14,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:14" (1/1) ... [2021-12-15 10:59:14,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e92018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:14, skipping insertion in model container [2021-12-15 10:59:14,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:14" (1/1) ... [2021-12-15 10:59:14,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:59:14,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:59:14,935 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/bresenham-ll_unwindbound2.c[597,610] [2021-12-15 10:59:14,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:14,975 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:59:15,020 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/bresenham-ll_unwindbound2.c[597,610] [2021-12-15 10:59:15,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:15,051 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:59:15,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15 WrapperNode [2021-12-15 10:59:15,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:15,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:15,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:59:15,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:59:15,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,079 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2021-12-15 10:59:15,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:15,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:59:15,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:59:15,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:59:15,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:59:15,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:59:15,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:59:15,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:59:15,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (1/1) ... [2021-12-15 10:59:15,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:15,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:59:15,157 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 10:59:15,203 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 10:59:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:59:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:59:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:59:15,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:59:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:59:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:59:15,265 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:59:15,266 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:59:15,511 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:59:15,514 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:59:15,515 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 10:59:15,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:15 BoogieIcfgContainer [2021-12-15 10:59:15,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:59:15,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:59:15,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:59:15,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:59:15,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:59:14" (1/3) ... [2021-12-15 10:59:15,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353efff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:15, skipping insertion in model container [2021-12-15 10:59:15,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:15" (2/3) ... [2021-12-15 10:59:15,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353efff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:15, skipping insertion in model container [2021-12-15 10:59:15,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:15" (3/3) ... [2021-12-15 10:59:15,521 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound2.c [2021-12-15 10:59:15,524 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:59:15,525 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:59:15,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:59:15,572 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 10:59:15,572 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:59:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 10:59:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:59:15,585 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:59:15,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:59:15,586 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:59:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:59:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2021-12-15 10:59:15,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:59:15,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167398556] [2021-12-15 10:59:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:59:15,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:59:15,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:59:15,600 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 10:59:15,601 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 10:59:15,625 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 10:59:15,823 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 10:59:15,824 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 10:59:15,828 INFO L158 Benchmark]: Toolchain (without parser) took 999.35ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 31.8MB in the beginning and 46.8MB in the end (delta: -15.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:15,828 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:15,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.83ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 31.6MB in the beginning and 52.5MB in the end (delta: -20.9MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:15,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.57ms. Allocated memory is still 69.2MB. Free memory was 52.5MB in the beginning and 50.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:59:15,829 INFO L158 Benchmark]: Boogie Preprocessor took 32.19ms. Allocated memory is still 69.2MB. Free memory was 50.9MB in the beginning and 49.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:59:15,830 INFO L158 Benchmark]: RCFGBuilder took 402.57ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 40.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:15,830 INFO L158 Benchmark]: TraceAbstraction took 309.45ms. Allocated memory is still 69.2MB. Free memory was 39.5MB in the beginning and 46.8MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:15,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.2MB in the beginning and 36.2MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.83ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 31.6MB in the beginning and 52.5MB in the end (delta: -20.9MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.57ms. Allocated memory is still 69.2MB. Free memory was 52.5MB in the beginning and 50.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.19ms. Allocated memory is still 69.2MB. Free memory was 50.9MB in the beginning and 49.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 402.57ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 40.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 309.45ms. Allocated memory is still 69.2MB. Free memory was 39.5MB in the beginning and 46.8MB in the end (delta: -7.2MB). 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 10:59:15,877 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