./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/max10-1.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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:50:02,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:50:02,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:50:03,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:50:03,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:50:03,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:50:03,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:50:03,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:50:03,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:50:03,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:50:03,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:50:03,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:50:03,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:50:03,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:50:03,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:50:03,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:50:03,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:50:03,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:50:03,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:50:03,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:50:03,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:50:03,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:50:03,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:50:03,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:50:03,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:50:03,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:50:03,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:50:03,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:50:03,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:50:03,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:50:03,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:50:03,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:50:03,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:50:03,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:50:03,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:50:03,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:50:03,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:50:03,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:50:03,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:50:03,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:50:03,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:50:03,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:50:03,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:50:03,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:50:03,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:50:03,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:50:03,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:50:03,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:50:03,179 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:50:03,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:50:03,180 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:50:03,180 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:50:03,181 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:50:03,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:50:03,182 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:50:03,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:50:03,183 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:50:03,183 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:50:03,183 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:50:03,184 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:50:03,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:50:03,185 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:50:03,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:50:03,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:50:03,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:50:03,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:50:03,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:50:03,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:50:03,188 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:50:03,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:50:03,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:50:03,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:50:03,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:50:03,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:50:03,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:50:03,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:50:03,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:50:03,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:50:03,192 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:50:03,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:50:03,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:50:03,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:50:03,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:50:03,193 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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2021-11-23 16:50:03,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:50:03,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:50:03,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:50:03,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:50:03,540 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:50:03,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/reducercommutativity/max10-1.i [2021-11-23 16:50:03,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data/fbb3c3960/2fffb1172ade433aa27f712cb05c688a/FLAG63c74eba6 [2021-11-23 16:50:04,101 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:50:04,101 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/sv-benchmarks/c/reducercommutativity/max10-1.i [2021-11-23 16:50:04,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data/fbb3c3960/2fffb1172ade433aa27f712cb05c688a/FLAG63c74eba6 [2021-11-23 16:50:04,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data/fbb3c3960/2fffb1172ade433aa27f712cb05c688a [2021-11-23 16:50:04,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:50:04,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:50:04,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:50:04,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:50:04,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:50:04,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668378a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04, skipping insertion in model container [2021-11-23 16:50:04,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:50:04,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:50:04,761 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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-11-23 16:50:04,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:50:04,773 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:50:04,799 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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-11-23 16:50:04,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:50:04,817 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:50:04,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04 WrapperNode [2021-11-23 16:50:04,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:50:04,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:50:04,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:50:04,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:50:04,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,872 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2021-11-23 16:50:04,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:50:04,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:50:04,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:50:04,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:50:04,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:50:04,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:50:04,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:50:04,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:50:04,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:04" (1/1) ... [2021-11-23 16:50:04,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:50:04,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:50:04,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:50:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:50:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-11-23 16:50:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-11-23 16:50:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:50:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:50:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 16:50:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:50:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:50:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 16:50:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:50:04,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:50:05,149 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:50:05,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:50:05,383 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:50:05,438 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 16:50:05,444 INFO L158 Benchmark]: Toolchain (without parser) took 967.94ms. Allocated memory is still 98.6MB. Free memory was 58.0MB in the beginning and 59.8MB in the end (delta: -1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:50:05,445 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 74.1MB in the beginning and 74.1MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:50:05,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.12ms. Allocated memory is still 98.6MB. Free memory was 57.8MB in the beginning and 74.2MB in the end (delta: -16.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 16:50:05,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.61ms. Allocated memory is still 98.6MB. Free memory was 74.2MB in the beginning and 72.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:50:05,450 INFO L158 Benchmark]: Boogie Preprocessor took 44.51ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 71.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:50:05,451 INFO L158 Benchmark]: RCFGBuilder took 521.94ms. Allocated memory is still 98.6MB. Free memory was 71.3MB in the beginning and 59.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:50:05,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 74.1MB in the beginning and 74.1MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.12ms. Allocated memory is still 98.6MB. Free memory was 57.8MB in the beginning and 74.2MB in the end (delta: -16.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.61ms. Allocated memory is still 98.6MB. Free memory was 74.2MB in the beginning and 72.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.51ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 71.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.94ms. Allocated memory is still 98.6MB. Free memory was 71.3MB in the beginning and 59.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. 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 16:50:05,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:50:08,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:50:08,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:50:08,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:50:08,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:50:08,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:50:08,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:50:08,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:50:08,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:50:08,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:50:08,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:50:08,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:50:08,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:50:08,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:50:08,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:50:08,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:50:08,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:50:08,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:50:08,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:50:08,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:50:08,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:50:08,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:50:08,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:50:08,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:50:08,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:50:08,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:50:08,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:50:08,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:50:08,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:50:08,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:50:08,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:50:08,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:50:08,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:50:08,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:50:08,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:50:08,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:50:08,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:50:08,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:50:08,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:50:08,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:50:08,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:50:08,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:50:08,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:50:08,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:50:08,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:50:08,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:50:08,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:50:08,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:50:08,641 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:50:08,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:50:08,642 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:50:08,642 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:50:08,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:50:08,644 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:50:08,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:50:08,647 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:50:08,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:50:08,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:50:08,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:50:08,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:50:08,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:50:08,648 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:50:08,649 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:50:08,649 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:50:08,649 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:50:08,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:50:08,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:50:08,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:50:08,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:50:08,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:50:08,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:50:08,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:50:08,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:50:08,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:50:08,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:50:08,653 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:50:08,653 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:50:08,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:50:08,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:50:08,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:50:08,655 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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2021-11-23 16:50:09,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:50:09,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:50:09,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:50:09,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:50:09,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:50:09,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/reducercommutativity/max10-1.i [2021-11-23 16:50:09,270 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data/8f392164a/7bd4c92e94944d1687a33ff9b704f69f/FLAG091958eab [2021-11-23 16:50:09,890 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:50:09,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/sv-benchmarks/c/reducercommutativity/max10-1.i [2021-11-23 16:50:09,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data/8f392164a/7bd4c92e94944d1687a33ff9b704f69f/FLAG091958eab [2021-11-23 16:50:10,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/data/8f392164a/7bd4c92e94944d1687a33ff9b704f69f [2021-11-23 16:50:10,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:50:10,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:50:10,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:50:10,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:50:10,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:50:10,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b31ea25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10, skipping insertion in model container [2021-11-23 16:50:10,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:50:10,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:50:10,480 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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-11-23 16:50:10,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:50:10,496 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:50:10,594 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_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-11-23 16:50:10,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:50:10,614 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:50:10,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10 WrapperNode [2021-11-23 16:50:10,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:50:10,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:50:10,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:50:10,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:50:10,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,675 INFO L137 Inliner]: procedures = 18, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2021-11-23 16:50:10,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:50:10,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:50:10,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:50:10,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:50:10,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:50:10,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:50:10,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:50:10,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:50:10,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (1/1) ... [2021-11-23 16:50:10,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:50:10,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:50:10,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:50:10,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:50:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:50:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-11-23 16:50:10,821 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-11-23 16:50:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:50:10,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:50:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 16:50:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:50:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:50:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:50:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 16:50:10,918 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:50:10,920 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:50:11,180 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:50:11,188 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:50:11,202 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 16:50:11,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:50:11 BoogieIcfgContainer [2021-11-23 16:50:11,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:50:11,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:50:11,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:50:11,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:50:11,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:50:10" (1/3) ... [2021-11-23 16:50:11,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e73d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:50:11, skipping insertion in model container [2021-11-23 16:50:11,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:10" (2/3) ... [2021-11-23 16:50:11,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e73d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:50:11, skipping insertion in model container [2021-11-23 16:50:11,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:50:11" (3/3) ... [2021-11-23 16:50:11,216 INFO L111 eAbstractionObserver]: Analyzing ICFG max10-1.i [2021-11-23 16:50:11,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:50:11,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:50:11,326 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:50:11,335 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 16:50:11,335 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:50:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 16:50:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 16:50:11,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:11,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:11,366 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:50:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash -528134526, now seen corresponding path program 1 times [2021-11-23 16:50:11,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:11,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074175472] [2021-11-23 16:50:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:11,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:11,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:11,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:11,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:50:11,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:11,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:11,708 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 16:50:11,719 INFO L158 Benchmark]: Toolchain (without parser) took 1472.44ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 36.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2021-11-23 16:50:11,721 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:50:11,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.60ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 43.4MB in the end (delta: -4.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:50:11,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.14ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 41.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:50:11,726 INFO L158 Benchmark]: Boogie Preprocessor took 45.79ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 40.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:50:11,729 INFO L158 Benchmark]: RCFGBuilder took 482.42ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 29.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:50:11,730 INFO L158 Benchmark]: TraceAbstraction took 504.45ms. Allocated memory is still 60.8MB. Free memory was 29.3MB in the beginning and 36.3MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:50:11,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.60ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 43.4MB in the end (delta: -4.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.14ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 41.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.79ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 40.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.42ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 29.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 504.45ms. Allocated memory is still 60.8MB. Free memory was 29.3MB in the beginning and 36.3MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:50:11,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a67c6c5-ef36-4704-8af3-8e2ee1713be8/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