./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.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_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/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_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/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_ec93755f-81e8-4750-b9b3-d044bcba927e/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 0b8de634f132d76c1b6698e4c3a5f12df478fc7c8b9ceb30d48afc80707f7564 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:48:40,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:48:40,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:48:40,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:48:40,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:48:40,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:48:40,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:48:40,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:48:40,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:48:40,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:48:40,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:48:40,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:48:40,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:48:40,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:48:40,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:48:40,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:48:40,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:48:40,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:48:40,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:48:40,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:48:40,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:48:40,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:48:40,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:48:40,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:48:40,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:48:40,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:48:40,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:48:40,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:48:40,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:48:40,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:48:40,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:48:40,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:48:40,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:48:40,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:48:40,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:48:40,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:48:40,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:48:40,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:48:40,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:48:40,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:48:40,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:48:40,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:48:40,418 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:48:40,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:48:40,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:48:40,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:48:40,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:48:40,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:48:40,420 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:48:40,420 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:48:40,421 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:48:40,421 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:48:40,421 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:48:40,421 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:48:40,422 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:48:40,422 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:48:40,422 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:48:40,422 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:48:40,423 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:48:40,423 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:48:40,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:48:40,424 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:48:40,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:48:40,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:48:40,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:48:40,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:48:40,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:48:40,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:48:40,426 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:48:40,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:48:40,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:48:40,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:48:40,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:48:40,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:48:40,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:40,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:48:40,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:48:40,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:48:40,428 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:48:40,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:48:40,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:48:40,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:48:40,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:48:40,429 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_ec93755f-81e8-4750-b9b3-d044bcba927e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b8de634f132d76c1b6698e4c3a5f12df478fc7c8b9ceb30d48afc80707f7564 [2021-11-23 16:48:40,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:48:40,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:48:40,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:48:40,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:48:40,730 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:48:40,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c [2021-11-23 16:48:40,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data/189573417/8c4bf2de8c6c4b2cac2538155d7b4a49/FLAG60f9dabba [2021-11-23 16:48:41,425 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:48:41,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c [2021-11-23 16:48:41,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data/189573417/8c4bf2de8c6c4b2cac2538155d7b4a49/FLAG60f9dabba [2021-11-23 16:48:41,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data/189573417/8c4bf2de8c6c4b2cac2538155d7b4a49 [2021-11-23 16:48:41,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:48:41,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:48:41,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:41,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:48:41,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:48:41,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:41" (1/1) ... [2021-11-23 16:48:41,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c358f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:41, skipping insertion in model container [2021-11-23 16:48:41,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:41" (1/1) ... [2021-11-23 16:48:41,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:48:41,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:48:42,095 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_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[911,924] [2021-11-23 16:48:42,185 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_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[8416,8429] [2021-11-23 16:48:42,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:42,339 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:48:42,351 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_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[911,924] [2021-11-23 16:48:42,369 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_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[8416,8429] [2021-11-23 16:48:42,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:42,506 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:48:42,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42 WrapperNode [2021-11-23 16:48:42,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:42,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:42,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:48:42,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:48:42,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,619 INFO L137 Inliner]: procedures = 77, calls = 95, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1025 [2021-11-23 16:48:42,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:42,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:48:42,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:48:42,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:48:42,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:48:42,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:48:42,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:48:42,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:48:42,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:42" (1/1) ... [2021-11-23 16:48:42,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:48:42,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:48:42,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:48:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:48:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:48:42,798 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:48:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 16:48:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 16:48:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 16:48:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 16:48:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 16:48:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 16:48:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 16:48:42,801 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 16:48:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 16:48:42,801 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 16:48:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 16:48:42,802 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 16:48:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 16:48:42,802 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 16:48:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 16:48:42,803 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 16:48:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 16:48:42,803 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 16:48:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 16:48:42,803 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 16:48:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:48:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 16:48:42,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 16:48:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 16:48:42,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 16:48:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:48:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:48:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 16:48:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 16:48:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 16:48:42,808 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 16:48:42,978 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:48:42,981 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:48:44,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-11-23 16:48:44,086 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2021-11-23 16:48:44,183 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:48:44,260 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:48:44,273 INFO L158 Benchmark]: Toolchain (without parser) took 2489.79ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 64.7MB in the beginning and 69.6MB in the end (delta: -5.0MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2021-11-23 16:48:44,275 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 53.8MB in the beginning and 53.7MB in the end (delta: 41.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:48:44,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 725.88ms. Allocated memory is still 100.7MB. Free memory was 64.3MB in the beginning and 62.0MB in the end (delta: 2.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 16:48:44,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.50ms. Allocated memory is still 100.7MB. Free memory was 62.0MB in the beginning and 57.3MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 16:48:44,279 INFO L158 Benchmark]: Boogie Preprocessor took 70.04ms. Allocated memory is still 100.7MB. Free memory was 57.3MB in the beginning and 53.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:48:44,281 INFO L158 Benchmark]: RCFGBuilder took 1577.56ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 52.7MB in the beginning and 69.6MB in the end (delta: -16.9MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2021-11-23 16:48:44,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 53.8MB in the beginning and 53.7MB in the end (delta: 41.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 725.88ms. Allocated memory is still 100.7MB. Free memory was 64.3MB in the beginning and 62.0MB in the end (delta: 2.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.50ms. Allocated memory is still 100.7MB. Free memory was 62.0MB in the beginning and 57.3MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.04ms. Allocated memory is still 100.7MB. Free memory was 57.3MB in the beginning and 53.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1577.56ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 52.7MB in the beginning and 69.6MB in the end (delta: -16.9MB). Peak memory consumption was 24.8MB. 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 16:48:44,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/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 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_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/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_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/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_ec93755f-81e8-4750-b9b3-d044bcba927e/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 0b8de634f132d76c1b6698e4c3a5f12df478fc7c8b9ceb30d48afc80707f7564 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:48:47,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:48:47,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:48:47,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:48:47,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:48:47,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:48:47,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:48:47,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:48:47,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:48:47,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:48:47,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:48:47,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:48:47,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:48:47,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:48:47,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:48:47,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:48:47,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:48:47,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:48:47,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:48:47,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:48:47,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:48:47,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:48:47,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:48:47,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:48:47,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:48:47,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:48:47,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:48:47,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:48:47,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:48:47,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:48:47,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:48:47,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:48:47,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:48:47,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:48:47,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:48:47,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:48:47,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:48:47,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:48:47,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:48:47,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:48:47,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:48:47,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:48:47,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:48:47,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:48:47,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:48:47,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:48:47,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:48:47,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:48:47,316 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:48:47,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:48:47,317 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:48:47,317 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:48:47,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:48:47,319 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:48:47,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:48:47,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:48:47,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:48:47,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:48:47,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:48:47,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:48:47,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:48:47,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:48:47,322 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:48:47,323 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:48:47,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:48:47,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:48:47,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:48:47,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:48:47,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:48:47,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:48:47,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:48:47,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:47,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:48:47,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:48:47,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:48:47,326 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:48:47,326 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:48:47,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:48:47,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:48:47,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:48:47,327 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_ec93755f-81e8-4750-b9b3-d044bcba927e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b8de634f132d76c1b6698e4c3a5f12df478fc7c8b9ceb30d48afc80707f7564 [2021-11-23 16:48:47,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:48:47,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:48:47,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:48:47,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:48:47,752 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:48:47,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c [2021-11-23 16:48:47,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data/2a6a4dcc4/002a02e143b04ab89cbef6d94a00d98b/FLAGd02b0083f [2021-11-23 16:48:48,635 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:48:48,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c [2021-11-23 16:48:48,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data/2a6a4dcc4/002a02e143b04ab89cbef6d94a00d98b/FLAGd02b0083f [2021-11-23 16:48:48,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/data/2a6a4dcc4/002a02e143b04ab89cbef6d94a00d98b [2021-11-23 16:48:48,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:48:48,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:48:48,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:48,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:48:48,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:48:48,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:48" (1/1) ... [2021-11-23 16:48:48,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58796ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:48, skipping insertion in model container [2021-11-23 16:48:48,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:48" (1/1) ... [2021-11-23 16:48:48,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:48:48,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:48:49,111 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_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[911,924] [2021-11-23 16:48:49,174 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_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[8416,8429] [2021-11-23 16:48:49,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:49,350 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:48:49,367 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_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[911,924] [2021-11-23 16:48:49,407 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_ec93755f-81e8-4750-b9b3-d044bcba927e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[8416,8429] [2021-11-23 16:48:49,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:49,495 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:48:49,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49 WrapperNode [2021-11-23 16:48:49,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:49,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:49,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:48:49,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:48:49,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,612 INFO L137 Inliner]: procedures = 78, calls = 95, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 986 [2021-11-23 16:48:49,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:49,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:48:49,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:48:49,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:48:49,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:48:49,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:48:49,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:48:49,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:48:49,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (1/1) ... [2021-11-23 16:48:49,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:49,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:48:49,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:48:49,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:48:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:48:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:48:49,849 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:48:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 16:48:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 16:48:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 16:48:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 16:48:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 16:48:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 16:48:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 16:48:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 16:48:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 16:48:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 16:48:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 16:48:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 16:48:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 16:48:49,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 16:48:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:48:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 16:48:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 16:48:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 16:48:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 16:48:49,852 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 16:48:49,852 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 16:48:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 16:48:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 16:48:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 16:48:49,853 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 16:48:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:48:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:48:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 16:48:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 16:48:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 16:48:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 16:48:49,992 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:48:49,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:48:50,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2021-11-23 16:48:50,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2021-11-23 16:48:51,014 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:48:51,035 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:48:51,036 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-23 16:48:51,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:48:51 BoogieIcfgContainer [2021-11-23 16:48:51,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:48:51,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:48:51,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:48:51,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:48:51,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:48:48" (1/3) ... [2021-11-23 16:48:51,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7286a4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:48:51, skipping insertion in model container [2021-11-23 16:48:51,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:49" (2/3) ... [2021-11-23 16:48:51,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7286a4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:48:51, skipping insertion in model container [2021-11-23 16:48:51,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:48:51" (3/3) ... [2021-11-23 16:48:51,051 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.11.cil-1.c [2021-11-23 16:48:51,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:48:51,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 16:48:51,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:48:51,151 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 16:48:51,152 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 16:48:51,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 482 states, 421 states have (on average 1.6389548693586697) internal successors, (690), 429 states have internal predecessors, (690), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2021-11-23 16:48:51,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 16:48:51,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:51,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:51,226 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:48:51,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:51,244 INFO L85 PathProgramCache]: Analyzing trace with hash 42670934, now seen corresponding path program 1 times [2021-11-23 16:48:51,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:51,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914939598] [2021-11-23 16:48:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:51,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:51,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:51,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:51,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:48:51,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:51,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:51,552 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:48:51,558 INFO L158 Benchmark]: Toolchain (without parser) took 2695.62ms. Allocated memory was 52.4MB in the beginning and 77.6MB in the end (delta: 25.2MB). Free memory was 28.0MB in the beginning and 48.9MB in the end (delta: -20.9MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2021-11-23 16:48:51,558 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 52.4MB. Free memory was 33.7MB in the beginning and 33.7MB in the end (delta: 36.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:48:51,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.32ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.7MB in the beginning and 36.9MB in the end (delta: -9.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-11-23 16:48:51,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.62ms. Allocated memory is still 62.9MB. Free memory was 36.9MB in the beginning and 32.2MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:48:51,561 INFO L158 Benchmark]: Boogie Preprocessor took 128.61ms. Allocated memory is still 62.9MB. Free memory was 32.2MB in the beginning and 27.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:48:51,562 INFO L158 Benchmark]: RCFGBuilder took 1297.03ms. Allocated memory is still 62.9MB. Free memory was 27.4MB in the beginning and 30.2MB in the end (delta: -2.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-11-23 16:48:51,562 INFO L158 Benchmark]: TraceAbstraction took 513.37ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 29.7MB in the beginning and 48.9MB in the end (delta: -19.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-11-23 16:48:51,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 52.4MB. Free memory was 33.7MB in the beginning and 33.7MB in the end (delta: 36.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.32ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.7MB in the beginning and 36.9MB in the end (delta: -9.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 115.62ms. Allocated memory is still 62.9MB. Free memory was 36.9MB in the beginning and 32.2MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 128.61ms. Allocated memory is still 62.9MB. Free memory was 32.2MB in the beginning and 27.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1297.03ms. Allocated memory is still 62.9MB. Free memory was 27.4MB in the beginning and 30.2MB in the end (delta: -2.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * TraceAbstraction took 513.37ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 29.7MB in the beginning and 48.9MB in the end (delta: -19.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:48:51,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec93755f-81e8-4750-b9b3-d044bcba927e/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