./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy7.wvr.c --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_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/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_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/test-easy7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/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_fe822126-7b14-4f71-8139-49eeaa37e9e9/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 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:25:34,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:25:34,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:25:34,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:25:34,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:25:34,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:25:34,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:25:34,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:25:34,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:25:34,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:25:34,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:25:34,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:25:34,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:25:34,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:25:34,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:25:34,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:25:34,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:25:34,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:25:34,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:25:34,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:25:34,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:25:34,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:25:34,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:25:34,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:25:34,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:25:34,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:25:34,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:25:34,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:25:34,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:25:34,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:25:34,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:25:34,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:25:34,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:25:34,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:25:34,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:25:34,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:25:34,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:25:34,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:25:34,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:25:34,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:25:34,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:25:34,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:25:34,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:25:34,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:25:34,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:25:34,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:25:34,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:25:34,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:25:34,872 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:25:34,872 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:25:34,872 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:25:34,873 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:25:34,873 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:25:34,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:25:34,874 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:25:34,874 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:25:34,874 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:25:34,875 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:25:34,875 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:25:34,875 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:25:34,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:25:34,876 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:25:34,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:25:34,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:25:34,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:25:34,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:25:34,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:25:34,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:25:34,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:25:34,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:25:34,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:25:34,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:25:34,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:25:34,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:25:34,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:25:34,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:25:34,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:25:34,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:25:34,882 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:25:34,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:25:34,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:25:34,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:25:34,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:25:34,883 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_fe822126-7b14-4f71-8139-49eeaa37e9e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 [2021-11-23 17:25:35,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:25:35,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:25:35,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:25:35,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:25:35,223 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:25:35,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/weaver/test-easy7.wvr.c [2021-11-23 17:25:35,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data/ab3374ab6/44f3d65596cc4fecaefb9986346f8168/FLAG8a3e853eb [2021-11-23 17:25:35,934 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:25:35,935 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/sv-benchmarks/c/weaver/test-easy7.wvr.c [2021-11-23 17:25:35,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data/ab3374ab6/44f3d65596cc4fecaefb9986346f8168/FLAG8a3e853eb [2021-11-23 17:25:36,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data/ab3374ab6/44f3d65596cc4fecaefb9986346f8168 [2021-11-23 17:25:36,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:25:36,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:25:36,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:25:36,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:25:36,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:25:36,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3938dbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36, skipping insertion in model container [2021-11-23 17:25:36,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:25:36,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:25:36,589 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_fe822126-7b14-4f71-8139-49eeaa37e9e9/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2021-11-23 17:25:36,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:25:36,606 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:25:36,648 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_fe822126-7b14-4f71-8139-49eeaa37e9e9/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2021-11-23 17:25:36,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:25:36,678 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:25:36,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36 WrapperNode [2021-11-23 17:25:36,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:25:36,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:25:36,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:25:36,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:25:36,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,736 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2021-11-23 17:25:36,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:25:36,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:25:36,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:25:36,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:25:36,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:25:36,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:25:36,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:25:36,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:25:36,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (1/1) ... [2021-11-23 17:25:36,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:25:36,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:25:36,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:25:36,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:25:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:25:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 17:25:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 17:25:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 17:25:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 17:25:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:25:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:25:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:25:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:25:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:25:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:25:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:25:36,918 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 17:25:37,053 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:25:37,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:25:37,236 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:25:37,247 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:25:37,264 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:25:37,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:25:37 BoogieIcfgContainer [2021-11-23 17:25:37,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:25:37,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:25:37,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:25:37,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:25:37,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:25:36" (1/3) ... [2021-11-23 17:25:37,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ac8344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:25:37, skipping insertion in model container [2021-11-23 17:25:37,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:36" (2/3) ... [2021-11-23 17:25:37,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ac8344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:25:37, skipping insertion in model container [2021-11-23 17:25:37,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:25:37" (3/3) ... [2021-11-23 17:25:37,295 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2021-11-23 17:25:37,302 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 17:25:37,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:25:37,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:25:37,305 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 17:25:37,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,383 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,383 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,383 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,383 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,384 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,384 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,388 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,393 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,393 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,393 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,397 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,397 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:37,398 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.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ThreadInstanceAdder.connectThreadInstances(ThreadInstanceAdder.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.IcfgPetrifier.(IcfgPetrifier.java:136) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.petrify(TraceAbstractionStarter.java:514) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 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 17:25:37,403 INFO L158 Benchmark]: Toolchain (without parser) took 1111.62ms. Allocated memory is still 88.1MB. Free memory was 53.5MB in the beginning and 44.8MB in the end (delta: 8.7MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-23 17:25:37,404 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:25:37,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.64ms. Allocated memory is still 88.1MB. Free memory was 53.3MB in the beginning and 64.6MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:25:37,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.09ms. Allocated memory is still 88.1MB. Free memory was 64.6MB in the beginning and 62.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:25:37,408 INFO L158 Benchmark]: Boogie Preprocessor took 59.00ms. Allocated memory is still 88.1MB. Free memory was 62.9MB in the beginning and 61.9MB in the end (delta: 960.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:25:37,409 INFO L158 Benchmark]: RCFGBuilder took 469.32ms. Allocated memory is still 88.1MB. Free memory was 61.9MB in the beginning and 50.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:25:37,411 INFO L158 Benchmark]: TraceAbstraction took 131.45ms. Allocated memory is still 88.1MB. Free memory was 50.1MB in the beginning and 44.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:25:37,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 88.1MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.64ms. Allocated memory is still 88.1MB. Free memory was 53.3MB in the beginning and 64.6MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.09ms. Allocated memory is still 88.1MB. Free memory was 64.6MB in the beginning and 62.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.00ms. Allocated memory is still 88.1MB. Free memory was 62.9MB in the beginning and 61.9MB in the end (delta: 960.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 469.32ms. Allocated memory is still 88.1MB. Free memory was 61.9MB in the beginning and 50.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 131.45ms. Allocated memory is still 88.1MB. Free memory was 50.1MB in the beginning and 44.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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 17:25:37,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/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_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/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_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/test-easy7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/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_fe822126-7b14-4f71-8139-49eeaa37e9e9/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 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:25:40,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:25:40,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:25:40,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:25:40,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:25:40,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:25:40,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:25:40,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:25:40,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:25:40,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:25:40,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:25:40,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:25:40,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:25:40,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:25:40,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:25:40,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:25:40,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:25:40,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:25:40,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:25:40,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:25:40,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:25:40,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:25:40,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:25:40,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:25:40,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:25:40,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:25:40,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:25:40,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:25:40,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:25:40,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:25:40,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:25:40,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:25:40,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:25:40,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:25:40,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:25:40,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:25:40,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:25:40,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:25:40,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:25:40,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:25:40,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:25:40,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:25:40,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:25:40,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:25:40,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:25:40,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:25:40,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:25:40,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:25:40,706 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:25:40,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:25:40,706 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:25:40,707 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:25:40,708 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:25:40,708 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:25:40,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:25:40,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:25:40,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:25:40,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:25:40,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:25:40,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:25:40,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:25:40,711 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:25:40,711 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:25:40,712 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:25:40,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:25:40,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:25:40,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:25:40,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:25:40,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:25:40,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:25:40,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:25:40,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:25:40,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:25:40,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:25:40,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:25:40,715 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:25:40,715 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:25:40,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:25:40,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:25:40,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:25:40,716 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_fe822126-7b14-4f71-8139-49eeaa37e9e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 [2021-11-23 17:25:41,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:25:41,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:25:41,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:25:41,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:25:41,164 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:25:41,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/weaver/test-easy7.wvr.c [2021-11-23 17:25:41,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data/00a74fa1e/bdcd698917954394967bb463b41c44fb/FLAG8d3dd54c8 [2021-11-23 17:25:42,014 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:25:42,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/sv-benchmarks/c/weaver/test-easy7.wvr.c [2021-11-23 17:25:42,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data/00a74fa1e/bdcd698917954394967bb463b41c44fb/FLAG8d3dd54c8 [2021-11-23 17:25:42,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/data/00a74fa1e/bdcd698917954394967bb463b41c44fb [2021-11-23 17:25:42,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:25:42,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:25:42,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:25:42,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:25:42,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:25:42,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e991ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42, skipping insertion in model container [2021-11-23 17:25:42,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:25:42,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:25:42,615 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_fe822126-7b14-4f71-8139-49eeaa37e9e9/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2021-11-23 17:25:42,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:25:42,634 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:25:42,660 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_fe822126-7b14-4f71-8139-49eeaa37e9e9/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2021-11-23 17:25:42,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:25:42,681 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:25:42,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42 WrapperNode [2021-11-23 17:25:42,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:25:42,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:25:42,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:25:42,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:25:42,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,769 INFO L137 Inliner]: procedures = 23, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2021-11-23 17:25:42,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:25:42,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:25:42,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:25:42,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:25:42,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:25:42,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:25:42,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:25:42,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:25:42,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (1/1) ... [2021-11-23 17:25:42,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:25:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:25:42,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:25:42,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:25:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:25:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 17:25:42,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 17:25:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 17:25:42,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 17:25:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:25:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:25:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:25:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:25:42,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:25:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:25:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:25:42,954 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 17:25:43,131 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:25:43,133 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:25:43,446 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:25:43,456 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:25:43,457 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:25:43,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:25:43 BoogieIcfgContainer [2021-11-23 17:25:43,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:25:43,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:25:43,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:25:43,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:25:43,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:25:42" (1/3) ... [2021-11-23 17:25:43,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7276d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:25:43, skipping insertion in model container [2021-11-23 17:25:43,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:25:42" (2/3) ... [2021-11-23 17:25:43,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7276d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:25:43, skipping insertion in model container [2021-11-23 17:25:43,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:25:43" (3/3) ... [2021-11-23 17:25:43,472 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2021-11-23 17:25:43,479 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 17:25:43,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:25:43,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:25:43,480 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 17:25:43,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,536 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,536 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,536 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,536 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,537 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,538 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,539 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,540 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,541 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,541 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,541 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,541 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,542 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,543 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,544 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,546 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,546 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,546 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,546 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,547 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,547 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,547 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,547 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,548 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,548 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,548 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,548 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,569 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 17:25:43,570 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.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ThreadInstanceAdder.connectThreadInstances(ThreadInstanceAdder.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.IcfgPetrifier.(IcfgPetrifier.java:136) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.petrify(TraceAbstractionStarter.java:514) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 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 17:25:43,576 INFO L158 Benchmark]: Toolchain (without parser) took 1198.95ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 39.1MB in the beginning and 66.4MB in the end (delta: -27.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2021-11-23 17:25:43,577 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:25:43,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.25ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 28.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:25:43,579 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.47ms. Allocated memory is still 60.8MB. Free memory was 28.2MB in the beginning and 44.6MB in the end (delta: -16.4MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-11-23 17:25:43,581 INFO L158 Benchmark]: Boogie Preprocessor took 59.61ms. Allocated memory is still 60.8MB. Free memory was 44.6MB in the beginning and 43.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:25:43,582 INFO L158 Benchmark]: RCFGBuilder took 627.93ms. Allocated memory is still 60.8MB. Free memory was 43.3MB in the beginning and 32.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:25:43,583 INFO L158 Benchmark]: TraceAbstraction took 112.04ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 31.8MB in the beginning and 66.4MB in the end (delta: -34.6MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-11-23 17:25:43,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 41.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.25ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 28.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.47ms. Allocated memory is still 60.8MB. Free memory was 28.2MB in the beginning and 44.6MB in the end (delta: -16.4MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.61ms. Allocated memory is still 60.8MB. Free memory was 44.6MB in the beginning and 43.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 627.93ms. Allocated memory is still 60.8MB. Free memory was 43.3MB in the beginning and 32.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 112.04ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 31.8MB in the beginning and 66.4MB in the end (delta: -34.6MB). Peak memory consumption was 8.2MB. 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 17:25:43,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe822126-7b14-4f71-8139-49eeaa37e9e9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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