./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-horseshoe.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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:46:05,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:46:05,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:46:06,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:46:06,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:46:06,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:46:06,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:46:06,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:46:06,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:46:06,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:46:06,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:46:06,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:46:06,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:46:06,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:46:06,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:46:06,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:46:06,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:46:06,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:46:06,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:46:06,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:46:06,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:46:06,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:46:06,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:46:06,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:46:06,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:46:06,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:46:06,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:46:06,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:46:06,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:46:06,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:46:06,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:46:06,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:46:06,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:46:06,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:46:06,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:46:06,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:46:06,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:46:06,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:46:06,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:46:06,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:46:06,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:46:06,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:46:06,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:46:06,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:46:06,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:46:06,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:46:06,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:46:06,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:46:06,194 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:46:06,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:46:06,195 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:46:06,195 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:46:06,196 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:46:06,196 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:46:06,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:46:06,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:46:06,197 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:46:06,197 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:46:06,197 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:46:06,197 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:46:06,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:46:06,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:46:06,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:46:06,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:46:06,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:46:06,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:46:06,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:46:06,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:46:06,202 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:46:06,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:46:06,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:46:06,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:46:06,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:46:06,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:46:06,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:46:06,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:46:06,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:46:06,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:46:06,204 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:46:06,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:46:06,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:46:06,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:46:06,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:46:06,205 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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 [2021-11-23 16:46:06,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:46:06,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:46:06,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:46:06,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:46:06,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:46:06,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2021-11-23 16:46:06,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data/8cc49d7e9/73713a0721384e0fa075cf1a5e1f9084/FLAGf9a6e2a57 [2021-11-23 16:46:07,207 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:46:07,208 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2021-11-23 16:46:07,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data/8cc49d7e9/73713a0721384e0fa075cf1a5e1f9084/FLAGf9a6e2a57 [2021-11-23 16:46:07,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data/8cc49d7e9/73713a0721384e0fa075cf1a5e1f9084 [2021-11-23 16:46:07,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:46:07,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:46:07,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:46:07,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:46:07,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:46:07,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:46:07" (1/1) ... [2021-11-23 16:46:07,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe15d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:07, skipping insertion in model container [2021-11-23 16:46:07,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:46:07" (1/1) ... [2021-11-23 16:46:07,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:46:07,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:46:07,919 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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2021-11-23 16:46:07,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:46:07,951 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:46:07,998 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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2021-11-23 16:46:08,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:46:08,019 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:46:08,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08 WrapperNode [2021-11-23 16:46:08,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:46:08,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:46:08,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:46:08,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:46:08,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,105 INFO L137 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 245 [2021-11-23 16:46:08,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:46:08,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:46:08,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:46:08,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:46:08,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:46:08,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:46:08,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:46:08,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:46:08,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:08" (1/1) ... [2021-11-23 16:46:08,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:46:08,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:46:08,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:46:08,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:46:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:46:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:46:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 16:46:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 16:46:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 16:46:08,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 16:46:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 16:46:08,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 16:46:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-23 16:46:08,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-23 16:46:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:46:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 16:46:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 16:46:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 16:46:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:46:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:46:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:46:08,272 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 16:46:08,449 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:46:08,451 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:46:08,913 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:46:09,052 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$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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 16:46:09,068 INFO L158 Benchmark]: Toolchain (without parser) took 1514.52ms. Allocated memory is still 92.3MB. Free memory was 55.8MB in the beginning and 37.7MB in the end (delta: 18.2MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2021-11-23 16:46:09,069 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 64.0MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:46:09,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.71ms. Allocated memory is still 92.3MB. Free memory was 55.7MB in the beginning and 64.7MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 16:46:09,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.44ms. Allocated memory is still 92.3MB. Free memory was 64.4MB in the beginning and 62.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:46:09,072 INFO L158 Benchmark]: Boogie Preprocessor took 56.34ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 60.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:46:09,072 INFO L158 Benchmark]: RCFGBuilder took 903.11ms. Allocated memory is still 92.3MB. Free memory was 60.2MB in the beginning and 37.7MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 16:46:09,075 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 92.3MB. Free memory was 64.0MB in the beginning and 64.0MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 462.71ms. Allocated memory is still 92.3MB. Free memory was 55.7MB in the beginning and 64.7MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.44ms. Allocated memory is still 92.3MB. Free memory was 64.4MB in the beginning and 62.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.34ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 60.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 903.11ms. Allocated memory is still 92.3MB. Free memory was 60.2MB in the beginning and 37.7MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. 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 16:46:09,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:46:11,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:46:11,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:46:11,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:46:11,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:46:11,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:46:11,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:46:11,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:46:11,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:46:11,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:46:11,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:46:11,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:46:11,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:46:11,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:46:11,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:46:11,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:46:11,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:46:11,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:46:11,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:46:11,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:46:11,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:46:11,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:46:11,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:46:11,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:46:11,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:46:11,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:46:11,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:46:11,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:46:11,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:46:11,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:46:11,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:46:11,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:46:11,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:46:11,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:46:11,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:46:11,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:46:11,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:46:11,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:46:11,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:46:11,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:46:11,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:46:11,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:46:11,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:46:11,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:46:11,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:46:11,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:46:11,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:46:11,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:46:11,958 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:46:11,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:46:11,959 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:46:11,959 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:46:11,960 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:46:11,960 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:46:11,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:46:11,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:46:11,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:46:11,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:46:11,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:46:11,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:46:11,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:46:11,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:46:11,964 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:46:11,964 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:46:11,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:46:11,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:46:11,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:46:11,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:46:11,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:46:11,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:46:11,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:46:11,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:46:11,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:46:11,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:46:11,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:46:11,967 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:46:11,968 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:46:11,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:46:11,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:46:11,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:46:11,969 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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a1ebdea5e08fe7fb177f9715317eb0e1f1a80d35c0ea62e77ce19d6486e2cb1 [2021-11-23 16:46:12,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:46:12,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:46:12,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:46:12,406 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:46:12,407 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:46:12,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2021-11-23 16:46:12,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data/cf9037605/881095dbb6d34b76bf557a2e37852523/FLAG2c09a2d85 [2021-11-23 16:46:13,044 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:46:13,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2021-11-23 16:46:13,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data/cf9037605/881095dbb6d34b76bf557a2e37852523/FLAG2c09a2d85 [2021-11-23 16:46:13,384 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/data/cf9037605/881095dbb6d34b76bf557a2e37852523 [2021-11-23 16:46:13,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:46:13,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:46:13,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:46:13,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:46:13,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:46:13,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe9a0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13, skipping insertion in model container [2021-11-23 16:46:13,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:46:13,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:46:13,648 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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2021-11-23 16:46:13,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:46:13,670 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 16:46:13,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:46:13,695 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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2021-11-23 16:46:13,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:46:13,720 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:46:13,749 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_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3424,3437] [2021-11-23 16:46:13,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:46:13,771 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:46:13,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13 WrapperNode [2021-11-23 16:46:13,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:46:13,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:46:13,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:46:13,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:46:13,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,825 INFO L137 Inliner]: procedures = 27, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 238 [2021-11-23 16:46:13,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:46:13,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:46:13,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:46:13,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:46:13,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:46:13,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:46:13,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:46:13,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:46:13,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:13" (1/1) ... [2021-11-23 16:46:13,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:46:13,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:46:13,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:46:13,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:46:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:46:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:46:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:46:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 16:46:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 16:46:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 16:46:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 16:46:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 16:46:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-23 16:46:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-23 16:46:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 16:46:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 16:46:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 16:46:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:46:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:46:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:46:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 16:46:13,969 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 16:46:14,111 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:46:14,113 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:46:14,686 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:46:14,811 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$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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 16:46:14,816 INFO L158 Benchmark]: Toolchain (without parser) took 1426.45ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 35.5MB in the beginning and 49.9MB in the end (delta: -14.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 16:46:14,817 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:46:14,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.02ms. Allocated memory is still 58.7MB. Free memory was 35.3MB in the beginning and 37.2MB in the end (delta: -1.9MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-11-23 16:46:14,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.43ms. Allocated memory is still 58.7MB. Free memory was 37.0MB in the beginning and 34.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:46:14,820 INFO L158 Benchmark]: Boogie Preprocessor took 40.65ms. Allocated memory is still 58.7MB. Free memory was 34.7MB in the beginning and 32.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:46:14,821 INFO L158 Benchmark]: RCFGBuilder took 946.68ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 32.8MB in the beginning and 49.9MB in the end (delta: -17.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-23 16:46:14,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.02ms. Allocated memory is still 58.7MB. Free memory was 35.3MB in the beginning and 37.2MB in the end (delta: -1.9MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.43ms. Allocated memory is still 58.7MB. Free memory was 37.0MB in the beginning and 34.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.65ms. Allocated memory is still 58.7MB. Free memory was 34.7MB in the beginning and 32.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 946.68ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 32.8MB in the beginning and 49.9MB in the end (delta: -17.1MB). Peak memory consumption was 13.8MB. 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 16:46:14,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1cc845c-27d0-4da9-9e6a-ec392be2f8e7/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