./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/relax-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/relax-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d53812dd1177b266d0f37d9b3339dda1620cf3a3734db2ec7312de8297126685 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:05:25,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:05:25,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:05:25,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:05:25,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:05:25,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:05:25,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:05:25,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:05:25,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:05:25,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:05:25,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:05:25,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:05:25,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:05:25,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:05:25,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:05:25,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:05:25,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:05:25,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:05:25,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:05:25,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:05:25,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:05:25,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:05:25,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:05:25,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:05:25,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:05:25,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:05:25,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:05:25,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:05:25,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:05:25,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:05:25,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:05:25,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:05:26,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:05:26,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:05:26,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:05:26,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:05:26,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:05:26,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:05:26,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:05:26,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:05:26,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:05:26,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:05:26,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:05:26,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:05:26,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:05:26,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:05:26,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:05:26,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:05:26,067 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:05:26,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:05:26,067 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:05:26,068 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:05:26,069 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:05:26,069 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:05:26,069 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:05:26,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:05:26,070 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:05:26,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:05:26,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:05:26,070 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:05:26,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:05:26,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:05:26,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:05:26,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:05:26,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:05:26,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:05:26,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:05:26,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:05:26,075 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:05:26,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:05:26,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:05:26,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:05:26,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:05:26,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:05:26,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:05:26,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:05:26,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:05:26,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:05:26,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:05:26,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:05:26,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:05:26,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:05:26,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:05:26,078 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d53812dd1177b266d0f37d9b3339dda1620cf3a3734db2ec7312de8297126685 [2021-11-23 17:05:26,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:05:26,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:05:26,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:05:26,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:05:26,420 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:05:26,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/array-examples/relax-2.i [2021-11-23 17:05:26,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data/5b40abb8b/f43db17d3e0a44eebd98239e3cba89d6/FLAGed2c13b9b [2021-11-23 17:05:27,025 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:05:27,026 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/sv-benchmarks/c/array-examples/relax-2.i [2021-11-23 17:05:27,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data/5b40abb8b/f43db17d3e0a44eebd98239e3cba89d6/FLAGed2c13b9b [2021-11-23 17:05:27,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data/5b40abb8b/f43db17d3e0a44eebd98239e3cba89d6 [2021-11-23 17:05:27,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:05:27,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:05:27,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:05:27,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:05:27,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:05:27,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:27,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3ec77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27, skipping insertion in model container [2021-11-23 17:05:27,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:27,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:05:27,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:05:27,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/sv-benchmarks/c/array-examples/relax-2.i[980,993] [2021-11-23 17:05:27,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:05:27,791 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:05:27,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/sv-benchmarks/c/array-examples/relax-2.i[980,993] [2021-11-23 17:05:27,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:05:27,908 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:05:27,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27 WrapperNode [2021-11-23 17:05:27,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:05:27,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:27,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:05:27,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:05:27,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:27,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:27,983 INFO L137 Inliner]: procedures = 120, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 135 [2021-11-23 17:05:27,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:27,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:05:27,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:05:27,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:05:27,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:27,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:28,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:28,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:28,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:28,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:28,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:28,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:05:28,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:05:28,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:05:28,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:05:28,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:27" (1/1) ... [2021-11-23 17:05:28,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:05:28,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:05:28,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:05:28,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:05:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:05:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 17:05:28,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 17:05:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:05:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:05:28,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:05:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:05:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:05:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:05:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:05:28,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:05:28,212 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:05:28,214 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:05:28,427 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:05:28,452 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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) [2021-11-23 17:05:28,457 INFO L158 Benchmark]: Toolchain (without parser) took 1111.55ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 62.3MB in the beginning and 75.9MB in the end (delta: -13.6MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2021-11-23 17:05:28,458 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:05:28,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.10ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 62.1MB in the beginning and 94.8MB in the end (delta: -32.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:05:28,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.27ms. Allocated memory is still 127.9MB. Free memory was 94.8MB in the beginning and 92.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:05:28,461 INFO L158 Benchmark]: Boogie Preprocessor took 37.80ms. Allocated memory is still 127.9MB. Free memory was 92.1MB in the beginning and 90.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:05:28,461 INFO L158 Benchmark]: RCFGBuilder took 432.03ms. Allocated memory is still 127.9MB. Free memory was 90.6MB in the beginning and 75.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 17:05:28,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.10ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 62.1MB in the beginning and 94.8MB in the end (delta: -32.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.27ms. Allocated memory is still 127.9MB. Free memory was 94.8MB in the beginning and 92.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.80ms. Allocated memory is still 127.9MB. Free memory was 92.1MB in the beginning and 90.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 432.03ms. Allocated memory is still 127.9MB. Free memory was 90.6MB in the beginning and 75.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:05:28,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/relax-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d53812dd1177b266d0f37d9b3339dda1620cf3a3734db2ec7312de8297126685 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:05:30,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:05:30,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:05:31,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:05:31,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:05:31,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:05:31,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:05:31,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:05:31,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:05:31,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:05:31,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:05:31,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:05:31,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:05:31,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:05:31,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:05:31,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:05:31,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:05:31,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:05:31,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:05:31,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:05:31,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:05:31,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:05:31,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:05:31,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:05:31,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:05:31,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:05:31,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:05:31,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:05:31,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:05:31,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:05:31,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:05:31,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:05:31,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:05:31,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:05:31,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:05:31,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:05:31,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:05:31,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:05:31,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:05:31,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:05:31,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:05:31,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:05:31,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:05:31,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:05:31,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:05:31,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:05:31,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:05:31,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:05:31,185 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:05:31,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:05:31,186 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:05:31,186 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:05:31,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:05:31,187 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:05:31,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:05:31,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:05:31,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:05:31,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:05:31,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:05:31,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:05:31,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:05:31,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:05:31,191 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:05:31,192 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:05:31,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:05:31,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:05:31,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:05:31,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:05:31,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:05:31,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:05:31,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:05:31,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:05:31,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:05:31,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:05:31,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:05:31,195 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:05:31,195 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:05:31,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:05:31,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:05:31,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:05:31,197 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d53812dd1177b266d0f37d9b3339dda1620cf3a3734db2ec7312de8297126685 [2021-11-23 17:05:31,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:05:31,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:05:31,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:05:31,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:05:31,598 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:05:31,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/array-examples/relax-2.i [2021-11-23 17:05:31,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data/07dff4253/a9ff21489f924359b6e884d65044178a/FLAGb574b3fd2 [2021-11-23 17:05:32,263 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:05:32,264 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/sv-benchmarks/c/array-examples/relax-2.i [2021-11-23 17:05:32,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data/07dff4253/a9ff21489f924359b6e884d65044178a/FLAGb574b3fd2 [2021-11-23 17:05:32,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/data/07dff4253/a9ff21489f924359b6e884d65044178a [2021-11-23 17:05:32,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:05:32,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:05:32,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:05:32,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:05:32,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:05:32,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:05:32" (1/1) ... [2021-11-23 17:05:32,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1477097d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:32, skipping insertion in model container [2021-11-23 17:05:32,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:05:32" (1/1) ... [2021-11-23 17:05:32,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:05:32,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:05:32,848 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/sv-benchmarks/c/array-examples/relax-2.i[980,993] [2021-11-23 17:05:33,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:05:33,088 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:05:33,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/sv-benchmarks/c/array-examples/relax-2.i[980,993] [2021-11-23 17:05:33,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:05:33,220 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:05:33,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33 WrapperNode [2021-11-23 17:05:33,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:05:33,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:33,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:05:33,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:05:33,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,311 INFO L137 Inliner]: procedures = 123, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 134 [2021-11-23 17:05:33,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:33,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:05:33,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:05:33,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:05:33,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:05:33,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:05:33,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:05:33,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:05:33,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (1/1) ... [2021-11-23 17:05:33,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:05:33,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:05:33,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:05:33,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:05:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:05:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 17:05:33,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 17:05:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:05:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:05:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:05:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:05:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:05:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:05:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:05:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:05:33,663 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:05:33,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:05:34,032 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:05:34,039 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:05:34,039 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 17:05:34,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:05:34 BoogieIcfgContainer [2021-11-23 17:05:34,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:05:34,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:05:34,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:05:34,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:05:34,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:05:32" (1/3) ... [2021-11-23 17:05:34,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c91b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:05:34, skipping insertion in model container [2021-11-23 17:05:34,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:33" (2/3) ... [2021-11-23 17:05:34,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c91b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:05:34, skipping insertion in model container [2021-11-23 17:05:34,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:05:34" (3/3) ... [2021-11-23 17:05:34,049 INFO L111 eAbstractionObserver]: Analyzing ICFG relax-2.i [2021-11-23 17:05:34,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:05:34,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:05:34,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:05:34,112 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=FINITE_AUTOMATA, 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 [2021-11-23 17:05:34,115 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:05:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 44 states have internal predecessors, (67), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 17:05:34,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:05:34,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:05:34,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:05:34,145 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:05:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:05:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash 229348008, now seen corresponding path program 1 times [2021-11-23 17:05:34,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:05:34,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847482506] [2021-11-23 17:05:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:05:34,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:05:34,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:05:34,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:05:34,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:05:34,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 17:05:34,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:05:34,460 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) [2021-11-23 17:05:34,469 INFO L158 Benchmark]: Toolchain (without parser) took 1891.56ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 29.2MB in the beginning and 48.5MB in the end (delta: -19.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-11-23 17:05:34,471 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:05:34,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 643.21ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 29.1MB in the beginning and 42.0MB in the end (delta: -12.9MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2021-11-23 17:05:34,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.75ms. Allocated memory is still 69.2MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:05:34,475 INFO L158 Benchmark]: Boogie Preprocessor took 78.84ms. Allocated memory is still 69.2MB. Free memory was 39.6MB in the beginning and 37.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:05:34,476 INFO L158 Benchmark]: RCFGBuilder took 649.37ms. Allocated memory is still 69.2MB. Free memory was 37.9MB in the beginning and 38.4MB in the end (delta: -496.2kB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-11-23 17:05:34,480 INFO L158 Benchmark]: TraceAbstraction took 423.39ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 48.5MB in the end (delta: -10.6MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2021-11-23 17:05:34,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 54.5MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 643.21ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 29.1MB in the beginning and 42.0MB in the end (delta: -12.9MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.75ms. Allocated memory is still 69.2MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.84ms. Allocated memory is still 69.2MB. Free memory was 39.6MB in the beginning and 37.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 649.37ms. Allocated memory is still 69.2MB. Free memory was 37.9MB in the beginning and 38.4MB in the end (delta: -496.2kB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * TraceAbstraction took 423.39ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 48.5MB in the end (delta: -10.6MB). Peak memory consumption was 12.0MB. 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. [2021-11-23 17:05:34,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb3e26a-7d3d-4c57-aaab-db6078c420c3/bin/utaipan-fb15Y9Yzbl/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