./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem10_label29.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem10_label29.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS --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 4ba820e104d9a02ae6570a10a751db20b84fb85c632401a1753b9870ad5f2219 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:39:55,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:39:55,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:39:55,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:39:55,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:39:55,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:39:55,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:39:55,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:39:55,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:39:55,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:39:55,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:39:55,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:39:55,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:39:55,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:39:55,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:39:55,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:39:55,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:39:55,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:39:55,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:39:55,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:39:55,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:39:55,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:39:55,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:39:55,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:39:55,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:39:55,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:39:55,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:39:55,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:39:55,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:39:55,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:39:55,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:39:55,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:39:55,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:39:55,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:39:55,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:39:55,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:39:55,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:39:55,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:39:55,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:39:55,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:39:55,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:39:55,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:39:55,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:39:55,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:39:55,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:39:55,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:39:55,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:39:55,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:39:55,567 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:39:55,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:39:55,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:39:55,567 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:39:55,568 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:39:55,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:39:55,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:39:55,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:39:55,569 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:39:55,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:39:55,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:39:55,570 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:39:55,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:39:55,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:39:55,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:39:55,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:39:55,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:39:55,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:39:55,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:39:55,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:39:55,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:39:55,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:39:55,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:39:55,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:39:55,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:39:55,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:39:55,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:39:55,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:39:55,576 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:39:55,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:39:55,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:39:55,577 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:39:55,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:39:55,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:39:55,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:39:55,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba820e104d9a02ae6570a10a751db20b84fb85c632401a1753b9870ad5f2219 [2022-11-19 06:39:55,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:39:55,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:39:55,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:39:55,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:39:55,902 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:39:55,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/eca-rers2012/Problem10_label29.c [2022-11-19 06:39:55,972 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/data/5eb79d592/b566c21d42e545f2829e81117720df58/FLAG66fe7bfb6 [2022-11-19 06:39:56,534 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:39:56,534 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/sv-benchmarks/c/eca-rers2012/Problem10_label29.c [2022-11-19 06:39:56,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/data/5eb79d592/b566c21d42e545f2829e81117720df58/FLAG66fe7bfb6 [2022-11-19 06:39:56,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/data/5eb79d592/b566c21d42e545f2829e81117720df58 [2022-11-19 06:39:56,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:39:56,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:39:56,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:39:56,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:39:56,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:39:56,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:39:56" (1/1) ... [2022-11-19 06:39:56,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237c93cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:56, skipping insertion in model container [2022-11-19 06:39:56,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:39:56" (1/1) ... [2022-11-19 06:39:56,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:39:56,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:39:57,136 WARN L234 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_d9176125-9957-44b2-82ac-952e64ea0756/sv-benchmarks/c/eca-rers2012/Problem10_label29.c[1979,1992] [2022-11-19 06:39:57,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:39:57,340 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:39:57,375 WARN L234 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_d9176125-9957-44b2-82ac-952e64ea0756/sv-benchmarks/c/eca-rers2012/Problem10_label29.c[1979,1992] [2022-11-19 06:39:57,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:39:57,490 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:39:57,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57 WrapperNode [2022-11-19 06:39:57,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:39:57,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:39:57,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:39:57,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:39:57,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,564 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 597 [2022-11-19 06:39:57,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:39:57,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:39:57,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:39:57,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:39:57,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,612 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:39:57,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:39:57,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:39:57,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:39:57,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (1/1) ... [2022-11-19 06:39:57,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:39:57,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:57,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:39:57,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:39:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:39:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:39:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:39:57,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:39:57,794 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:39:57,796 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:39:59,137 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:40:02,054 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:40:02,055 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:40:02,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:40:02 BoogieIcfgContainer [2022-11-19 06:40:02,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:40:02,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:40:02,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:40:02,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:40:02,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:39:56" (1/3) ... [2022-11-19 06:40:02,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3553de28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:40:02, skipping insertion in model container [2022-11-19 06:40:02,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:57" (2/3) ... [2022-11-19 06:40:02,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3553de28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:40:02, skipping insertion in model container [2022-11-19 06:40:02,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:40:02" (3/3) ... [2022-11-19 06:40:02,070 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label29.c [2022-11-19 06:40:02,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:40:02,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:40:02,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:40:02,157 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16cfd55d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:40:02,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:40:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:40:02,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:02,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:40:02,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:40:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash 885161755, now seen corresponding path program 1 times [2022-11-19 06:40:02,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:02,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875776120] [2022-11-19 06:40:02,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:02,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:02,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:02,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875776120] [2022-11-19 06:40:02,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875776120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:40:02,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:40:02,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:40:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257878023] [2022-11-19 06:40:02,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:40:02,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:40:02,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:40:02,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:40:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:40:02,461 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:02,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:02,623 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-11-19 06:40:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:40:02,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:40:02,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:02,634 INFO L225 Difference]: With dead ends: 23 [2022-11-19 06:40:02,634 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 06:40:02,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:40:02,642 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:02,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:40:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 06:40:02,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-11-19 06:40:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-11-19 06:40:02,688 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2022-11-19 06:40:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:02,689 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-11-19 06:40:02,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-11-19 06:40:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:40:02,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:02,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-19 06:40:02,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:40:02,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:40:02,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:02,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1234030459, now seen corresponding path program 1 times [2022-11-19 06:40:02,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:40:02,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180605875] [2022-11-19 06:40:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:02,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:40:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:17,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:17,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180605875] [2022-11-19 06:40:17,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180605875] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:40:17,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588797926] [2022-11-19 06:40:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:17,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:40:17,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:40:17,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:40:17,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9176125-9957-44b2-82ac-952e64ea0756/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:40:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:17,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:40:17,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:40:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:30,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:40:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:47,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588797926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:40:47,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643106336] [2022-11-19 06:40:47,700 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:40:47,700 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:40:47,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:40:47,709 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:40:47,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:40:55,420 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2022-11-19 06:40:55,582 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2022-11-19 06:45:24,060 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 127