./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/dijkstra-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/dijkstra-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 ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:59:35,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:59:35,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:59:35,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:59:35,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:59:35,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:59:35,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:59:35,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:59:35,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:59:35,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:59:35,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:59:35,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:59:35,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:59:35,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:59:35,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:59:35,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:59:35,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:59:35,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:59:35,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:59:35,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:59:35,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:59:35,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:59:35,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:59:35,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:59:35,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:59:35,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:59:35,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:59:35,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:59:35,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:59:35,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:59:35,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:59:35,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:59:35,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:59:35,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:59:35,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:59:35,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:59:35,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:59:35,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:59:35,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:59:35,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:59:35,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:59:35,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:59:35,728 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:59:35,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:59:35,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:59:35,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:59:35,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:59:35,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:59:35,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:59:35,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:59:35,730 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:59:35,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:59:35,731 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:59:35,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:59:35,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:59:35,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:59:35,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:59:35,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:59:35,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:59:35,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:59:35,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:59:35,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:59:35,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:59:35,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:59:35,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:59:35,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:59:35,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:35,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:59:35,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:59:35,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:59:35,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:59:35,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:59:35,735 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:59:35,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:59:35,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:59:35,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:59:35,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca [2021-12-15 10:59:35,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:59:35,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:59:35,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:59:35,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:59:35,957 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:59:35,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-12-15 10:59:36,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d2938acf/1fa51f05304748d4944bc83aa03698d4/FLAG6f2183aea [2021-12-15 10:59:36,371 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:59:36,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-12-15 10:59:36,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d2938acf/1fa51f05304748d4944bc83aa03698d4/FLAG6f2183aea [2021-12-15 10:59:36,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d2938acf/1fa51f05304748d4944bc83aa03698d4 [2021-12-15 10:59:36,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:59:36,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:59:36,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:36,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:59:36,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:59:36,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc0e96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36, skipping insertion in model container [2021-12-15 10:59:36,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:59:36,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:59:36,524 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/dijkstra-u_unwindbound2.c[525,538] [2021-12-15 10:59:36,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:36,554 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:59:36,564 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/dijkstra-u_unwindbound2.c[525,538] [2021-12-15 10:59:36,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:36,589 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:59:36,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36 WrapperNode [2021-12-15 10:59:36,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:36,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:36,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:59:36,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:59:36,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,611 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2021-12-15 10:59:36,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:36,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:59:36,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:59:36,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:59:36,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:59:36,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:59:36,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:59:36,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:59:36,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (1/1) ... [2021-12-15 10:59:36,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:36,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:59:36,648 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 10:59:36,656 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 10:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:59:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:59:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:59:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:59:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:59:36,729 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:59:36,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:59:36,844 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:59:36,851 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:59:36,852 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 10:59:36,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:36 BoogieIcfgContainer [2021-12-15 10:59:36,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:59:36,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:59:36,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:59:36,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:59:36,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:59:36" (1/3) ... [2021-12-15 10:59:36,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc02a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:36, skipping insertion in model container [2021-12-15 10:59:36,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:36" (2/3) ... [2021-12-15 10:59:36,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc02a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:36, skipping insertion in model container [2021-12-15 10:59:36,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:36" (3/3) ... [2021-12-15 10:59:36,862 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2021-12-15 10:59:36,866 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:59:36,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:59:36,933 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:59:36,937 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 10:59:36,943 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:59:36,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-15 10:59:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 10:59:36,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:59:36,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:59:36,966 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:59:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:59:36,972 INFO L85 PathProgramCache]: Analyzing trace with hash -797370321, now seen corresponding path program 1 times [2021-12-15 10:59:36,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:59:36,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107138351] [2021-12-15 10:59:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:59:36,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:59:37,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:59:37,031 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 10:59:37,040 INFO L158 Benchmark]: Toolchain (without parser) took 648.08ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 65.0MB in the beginning and 98.6MB in the end (delta: -33.7MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2021-12-15 10:59:37,040 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 92.3MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:37,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.30ms. Allocated memory is still 92.3MB. Free memory was 64.9MB in the beginning and 67.4MB in the end (delta: -2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:37,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.82ms. Allocated memory is still 92.3MB. Free memory was 67.4MB in the beginning and 65.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:59:37,042 INFO L158 Benchmark]: Boogie Preprocessor took 13.00ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:37,043 INFO L158 Benchmark]: RCFGBuilder took 227.55ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 53.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:59:37,047 INFO L158 Benchmark]: TraceAbstraction took 179.14ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 53.1MB in the beginning and 98.7MB in the end (delta: -45.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-12-15 10:59:37,051 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 92.3MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.30ms. Allocated memory is still 92.3MB. Free memory was 64.9MB in the beginning and 67.4MB in the end (delta: -2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.82ms. Allocated memory is still 92.3MB. Free memory was 67.4MB in the beginning and 65.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.00ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 227.55ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 53.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 179.14ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 53.1MB in the beginning and 98.7MB in the end (delta: -45.6MB). Peak memory consumption was 12.7MB. 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 10:59:37,083 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/dijkstra-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 ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:59:38,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:59:38,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:59:38,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:59:38,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:59:38,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:59:38,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:59:38,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:59:38,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:59:38,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:59:38,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:59:38,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:59:38,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:59:38,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:59:38,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:59:38,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:59:38,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:59:38,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:59:38,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:59:38,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:59:38,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:59:38,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:59:38,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:59:38,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:59:38,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:59:38,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:59:38,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:59:38,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:59:38,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:59:38,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:59:38,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:59:38,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:59:38,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:59:38,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:59:38,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:59:38,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:59:38,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:59:38,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:59:38,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:59:38,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:59:38,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:59:38,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:59:38,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:59:38,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:59:38,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:59:38,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:59:38,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:59:38,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:59:38,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:59:38,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:59:38,772 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:59:38,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:59:38,772 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:59:38,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:59:38,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:59:38,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:59:38,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:59:38,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:59:38,773 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:59:38,774 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:59:38,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:59:38,774 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:59:38,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:59:38,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:59:38,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:59:38,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:59:38,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:59:38,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:59:38,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:38,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:59:38,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:59:38,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:59:38,780 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:59:38,780 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:59:38,781 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:59:38,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:59:38,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:59:38,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:59:38,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:59:38,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca [2021-12-15 10:59:39,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:59:39,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:59:39,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:59:39,045 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:59:39,045 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:59:39,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-12-15 10:59:39,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcfd12fee/d39a917f40744506b8aaf3b474bc0a16/FLAGb2b47ed46 [2021-12-15 10:59:39,459 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:59:39,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-12-15 10:59:39,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcfd12fee/d39a917f40744506b8aaf3b474bc0a16/FLAGb2b47ed46 [2021-12-15 10:59:39,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcfd12fee/d39a917f40744506b8aaf3b474bc0a16 [2021-12-15 10:59:39,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:59:39,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:59:39,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:39,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:59:39,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:59:39,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4e12e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39, skipping insertion in model container [2021-12-15 10:59:39,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:59:39,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:59:39,638 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/dijkstra-u_unwindbound2.c[525,538] [2021-12-15 10:59:39,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:39,701 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:59:39,733 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/dijkstra-u_unwindbound2.c[525,538] [2021-12-15 10:59:39,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:59:39,801 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:59:39,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39 WrapperNode [2021-12-15 10:59:39,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:59:39,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:39,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:59:39,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:59:39,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,840 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2021-12-15 10:59:39,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:59:39,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:59:39,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:59:39,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:59:39,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:59:39,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:59:39,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:59:39,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:59:39,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (1/1) ... [2021-12-15 10:59:39,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:59:39,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:59:39,896 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 10:59:39,898 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 10:59:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:59:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:59:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:59:39,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:59:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 10:59:39,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 10:59:39,973 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:59:39,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:59:40,121 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:59:40,125 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:59:40,125 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 10:59:40,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:40 BoogieIcfgContainer [2021-12-15 10:59:40,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:59:40,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:59:40,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:59:40,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:59:40,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:59:39" (1/3) ... [2021-12-15 10:59:40,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f975a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:40, skipping insertion in model container [2021-12-15 10:59:40,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:59:39" (2/3) ... [2021-12-15 10:59:40,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f975a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:59:40, skipping insertion in model container [2021-12-15 10:59:40,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:59:40" (3/3) ... [2021-12-15 10:59:40,131 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2021-12-15 10:59:40,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:59:40,135 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:59:40,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:59:40,185 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 10:59:40,185 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:59:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-15 10:59:40,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 10:59:40,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:59:40,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:59:40,201 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:59:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:59:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash -797370321, now seen corresponding path program 1 times [2021-12-15 10:59:40,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:59:40,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217329261] [2021-12-15 10:59:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:59:40,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:59:40,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:59:40,219 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 10:59:40,221 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 10:59:40,285 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 10:59:40,484 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 10:59:40,485 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 10:59:40,488 INFO L158 Benchmark]: Toolchain (without parser) took 1005.00ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 23.9MB in the beginning and 30.7MB in the end (delta: -6.8MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:40,489 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 48.2MB. Free memory was 30.3MB in the beginning and 30.3MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:40,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.73ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 23.7MB in the beginning and 40.7MB in the end (delta: -17.1MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2021-12-15 10:59:40,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.23ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 39.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:59:40,490 INFO L158 Benchmark]: Boogie Preprocessor took 29.87ms. Allocated memory is still 58.7MB. Free memory was 39.0MB in the beginning and 37.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:59:40,491 INFO L158 Benchmark]: RCFGBuilder took 255.00ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 39.2MB in the end (delta: -1.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-12-15 10:59:40,491 INFO L158 Benchmark]: TraceAbstraction took 359.74ms. Allocated memory is still 58.7MB. Free memory was 38.6MB in the beginning and 30.7MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:59:40,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 48.2MB. Free memory was 30.3MB in the beginning and 30.3MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.73ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 23.7MB in the beginning and 40.7MB in the end (delta: -17.1MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.23ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 39.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.87ms. Allocated memory is still 58.7MB. Free memory was 39.0MB in the beginning and 37.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 255.00ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 39.2MB in the end (delta: -1.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 359.74ms. Allocated memory is still 58.7MB. Free memory was 38.6MB in the beginning and 30.7MB in the end (delta: 7.9MB). 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 10:59:40,520 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