./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur --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 64bit --witnessprinter.graph.data.programhash 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e --- 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-38b53e6 [2022-11-26 00:56:17,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:56:17,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:56:17,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:56:17,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:56:17,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:56:17,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:56:17,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:56:17,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:56:17,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:56:17,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:56:17,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:56:17,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:56:17,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:56:17,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:56:17,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:56:17,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:56:17,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:56:17,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:56:17,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:56:17,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:56:17,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:56:17,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:56:17,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:56:17,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:56:17,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:56:17,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:56:17,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:56:17,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:56:17,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:56:17,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:56:17,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:56:17,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:56:17,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:56:17,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:56:17,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:56:17,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:56:17,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:56:17,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:56:17,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:56:17,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:56:17,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:56:17,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:56:17,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:56:17,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:56:17,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:56:17,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:56:17,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:56:17,549 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:56:17,549 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:56:17,549 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:56:17,550 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:56:17,551 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:56:17,551 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:56:17,551 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:56:17,551 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:56:17,552 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:56:17,552 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:56:17,552 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:56:17,552 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:56:17,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:56:17,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:56:17,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:56:17,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:56:17,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:56:17,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:56:17,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:56:17,554 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:56:17,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:56:17,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:56:17,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:56:17,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:56:17,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:56:17,556 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:56:17,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:56:17,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:56:17,557 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:56:17,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:56:17,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:56:17,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:56:17,558 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_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e [2022-11-26 00:56:17,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:56:17,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:56:17,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:56:17,891 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:56:17,892 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:56:17,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-26 00:56:20,818 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:56:21,123 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:56:21,124 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-26 00:56:21,136 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/data/4a926bc4b/9a919a230fdb45b78eddac10c547acd9/FLAG79ed7513d [2022-11-26 00:56:21,150 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/data/4a926bc4b/9a919a230fdb45b78eddac10c547acd9 [2022-11-26 00:56:21,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:56:21,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:56:21,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:56:21,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:56:21,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:56:21,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:21,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86d8f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21, skipping insertion in model container [2022-11-26 00:56:21,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:21,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:56:21,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:56:21,434 WARN L237 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_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-26 00:56:21,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:56:21,696 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:56:21,707 WARN L237 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_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-26 00:56:21,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:56:21,832 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:56:21,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21 WrapperNode [2022-11-26 00:56:21,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:56:21,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:56:21,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:56:21,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:56:21,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:21,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:21,953 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1032 [2022-11-26 00:56:21,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:56:21,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:56:21,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:56:21,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:56:21,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:21,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:21,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:21,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:22,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:22,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:22,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:22,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:22,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:56:22,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:56:22,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:56:22,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:56:22,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (1/1) ... [2022-11-26 00:56:22,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:56:22,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:56:22,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:56:22,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:56:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:56:22,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:56:22,602 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:56:22,605 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:56:35,758 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:56:35,783 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:56:35,783 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:56:35,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:56:35 BoogieIcfgContainer [2022-11-26 00:56:35,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:56:35,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:56:35,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:56:35,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:56:35,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:56:21" (1/3) ... [2022-11-26 00:56:35,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7883017b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:56:35, skipping insertion in model container [2022-11-26 00:56:35,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:21" (2/3) ... [2022-11-26 00:56:35,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7883017b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:56:35, skipping insertion in model container [2022-11-26 00:56:35,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:56:35" (3/3) ... [2022-11-26 00:56:35,795 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Dekker.c [2022-11-26 00:56:35,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:56:35,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:56:35,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:56:35,867 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;@63fa34f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:56:35,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:56:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-26 00:56:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:56:35,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:35,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:56:35,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:56:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 00:56:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:35,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294232798] [2022-11-26 00:56:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:56:36,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:56:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:56:36,349 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:56:36,350 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:56:36,352 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:56:36,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:56:36,361 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:56:36,365 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:56:36,388 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:56:36,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:56:36 BoogieIcfgContainer [2022-11-26 00:56:36,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:56:36,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:56:36,397 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:56:36,398 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:56:36,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:56:35" (3/4) ... [2022-11-26 00:56:36,401 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:56:36,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:56:36,403 INFO L158 Benchmark]: Toolchain (without parser) took 15228.22ms. Allocated memory was 159.4MB in the beginning and 574.6MB in the end (delta: 415.2MB). Free memory was 130.7MB in the beginning and 389.5MB in the end (delta: -258.8MB). Peak memory consumption was 154.9MB. Max. memory is 16.1GB. [2022-11-26 00:56:36,403 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory was 100.9MB in the beginning and 100.8MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:56:36,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.60ms. Allocated memory is still 159.4MB. Free memory was 130.7MB in the beginning and 95.9MB in the end (delta: 34.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-26 00:56:36,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.72ms. Allocated memory is still 159.4MB. Free memory was 95.9MB in the beginning and 86.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:56:36,405 INFO L158 Benchmark]: Boogie Preprocessor took 94.16ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 81.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:56:36,406 INFO L158 Benchmark]: RCFGBuilder took 13723.16ms. Allocated memory was 159.4MB in the beginning and 574.6MB in the end (delta: 415.2MB). Free memory was 81.3MB in the beginning and 429.4MB in the end (delta: -348.1MB). Peak memory consumption was 310.7MB. Max. memory is 16.1GB. [2022-11-26 00:56:36,406 INFO L158 Benchmark]: TraceAbstraction took 608.77ms. Allocated memory is still 574.6MB. Free memory was 428.3MB in the beginning and 389.5MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-26 00:56:36,407 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 574.6MB. Free memory is still 389.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:56:36,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory was 100.9MB in the beginning and 100.8MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 657.60ms. Allocated memory is still 159.4MB. Free memory was 130.7MB in the beginning and 95.9MB in the end (delta: 34.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.72ms. Allocated memory is still 159.4MB. Free memory was 95.9MB in the beginning and 86.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.16ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 81.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 13723.16ms. Allocated memory was 159.4MB in the beginning and 574.6MB in the end (delta: 415.2MB). Free memory was 81.3MB in the beginning and 429.4MB in the end (delta: -348.1MB). Peak memory consumption was 310.7MB. Max. memory is 16.1GB. * TraceAbstraction took 608.77ms. Allocated memory is still 574.6MB. Free memory was 428.3MB in the beginning and 389.5MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 574.6MB. Free memory is still 389.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 173, overapproximation of bitwiseAnd at line 109. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L31] const SORT_242 mask_SORT_242 = (SORT_242)-1 >> (sizeof(SORT_242) * 8 - 2); [L32] const SORT_242 msb_SORT_242 = (SORT_242)1 << (2 - 1); [L34] const SORT_5 var_6 = 0; [L35] const SORT_1 var_11 = 0; [L36] const SORT_5 var_13 = 5; [L37] const SORT_1 var_15 = 1; [L38] const SORT_5 var_33 = 7; [L39] const SORT_5 var_39 = 1; [L40] const SORT_5 var_46 = 2; [L41] const SORT_5 var_60 = 3; [L42] const SORT_5 var_70 = 4; [L43] const SORT_5 var_199 = 6; [L45] SORT_1 input_2; [L46] SORT_1 input_3; [L47] SORT_1 input_4; [L48] SORT_5 input_32; [L49] SORT_1 input_43; [L50] SORT_5 input_79; [L51] SORT_5 input_80; [L52] SORT_5 input_81; [L53] SORT_5 input_82; [L54] SORT_5 input_83; [L55] SORT_5 input_84; [L56] SORT_5 input_85; [L57] SORT_5 input_86; [L58] SORT_5 input_87; [L59] SORT_5 input_97; [L60] SORT_5 input_112; [L61] SORT_5 input_113; [L62] SORT_5 input_129; [L63] SORT_5 input_130; [L64] SORT_5 input_146; [L65] SORT_5 input_147; [L66] SORT_5 input_163; [L67] SORT_5 input_164; [L68] SORT_5 input_180; [L69] SORT_5 input_181; [L70] SORT_5 input_197; [L71] SORT_5 input_198; [L72] SORT_5 input_217; [L73] SORT_1 input_259; [L74] SORT_1 input_265; [L75] SORT_1 input_266; [L76] SORT_1 input_268; [L77] SORT_1 input_277; [L78] SORT_1 input_278; [L79] SORT_1 input_279; [L80] SORT_1 input_287; [L81] SORT_1 input_297; [L82] SORT_1 input_303; [L83] SORT_1 input_304; [L84] SORT_1 input_306; [L85] SORT_1 input_315; [L86] SORT_1 input_316; [L87] SORT_1 input_317; [L88] SORT_1 input_325; [L90] SORT_5 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L91] SORT_5 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L92] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_5 init_8_arg_1 = var_6; [L97] state_7 = init_8_arg_1 [L98] SORT_5 init_10_arg_1 = var_6; [L99] state_9 = init_10_arg_1 [L100] SORT_1 init_26_arg_1 = var_15; [L101] state_25 = init_26_arg_1 [L102] SORT_1 init_28_arg_1 = var_15; [L103] state_27 = init_28_arg_1 VAL [init_10_arg_1=0, init_26_arg_1=1, init_28_arg_1=1, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_242=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_242=2, msb_SORT_5=4, state_25=1, state_27=1, state_30=0, state_7=0, state_9=0, var_11=0, var_13=5, var_15=1, var_199=6, var_33=7, var_39=1, var_46=2, var_6=0, var_60=3, var_70=4] [L106] input_2 = __VERIFIER_nondet_uchar() [L107] input_3 = __VERIFIER_nondet_uchar() [L108] input_4 = __VERIFIER_nondet_uchar() [L109] input_4 = input_4 & mask_SORT_1 [L110] input_32 = __VERIFIER_nondet_uchar() [L111] input_43 = __VERIFIER_nondet_uchar() [L112] input_79 = __VERIFIER_nondet_uchar() [L113] input_80 = __VERIFIER_nondet_uchar() [L114] input_81 = __VERIFIER_nondet_uchar() [L115] input_82 = __VERIFIER_nondet_uchar() [L116] input_83 = __VERIFIER_nondet_uchar() [L117] input_84 = __VERIFIER_nondet_uchar() [L118] input_85 = __VERIFIER_nondet_uchar() [L119] input_86 = __VERIFIER_nondet_uchar() [L120] input_87 = __VERIFIER_nondet_uchar() [L121] input_97 = __VERIFIER_nondet_uchar() [L122] input_112 = __VERIFIER_nondet_uchar() [L123] input_113 = __VERIFIER_nondet_uchar() [L124] input_129 = __VERIFIER_nondet_uchar() [L125] input_130 = __VERIFIER_nondet_uchar() [L126] input_146 = __VERIFIER_nondet_uchar() [L127] input_147 = __VERIFIER_nondet_uchar() [L128] input_163 = __VERIFIER_nondet_uchar() [L129] input_164 = __VERIFIER_nondet_uchar() [L130] input_180 = __VERIFIER_nondet_uchar() [L131] input_181 = __VERIFIER_nondet_uchar() [L132] input_197 = __VERIFIER_nondet_uchar() [L133] input_198 = __VERIFIER_nondet_uchar() [L134] input_217 = __VERIFIER_nondet_uchar() [L135] input_259 = __VERIFIER_nondet_uchar() [L136] input_265 = __VERIFIER_nondet_uchar() [L137] input_266 = __VERIFIER_nondet_uchar() [L138] input_268 = __VERIFIER_nondet_uchar() [L139] input_277 = __VERIFIER_nondet_uchar() [L140] input_278 = __VERIFIER_nondet_uchar() [L141] input_279 = __VERIFIER_nondet_uchar() [L142] input_287 = __VERIFIER_nondet_uchar() [L143] input_297 = __VERIFIER_nondet_uchar() [L144] input_303 = __VERIFIER_nondet_uchar() [L145] input_304 = __VERIFIER_nondet_uchar() [L146] input_306 = __VERIFIER_nondet_uchar() [L147] input_315 = __VERIFIER_nondet_uchar() [L148] input_316 = __VERIFIER_nondet_uchar() [L149] input_317 = __VERIFIER_nondet_uchar() [L150] input_325 = __VERIFIER_nondet_uchar() [L153] SORT_1 var_12_arg_0 = var_11; [L154] SORT_5 var_12_arg_1 = state_9; [L155] SORT_5 var_12_arg_2 = state_7; [L156] SORT_5 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L157] var_12 = var_12 & mask_SORT_5 [L158] SORT_5 var_14_arg_0 = var_12; [L159] SORT_5 var_14_arg_1 = var_13; [L160] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L161] SORT_1 var_16_arg_0 = var_15; [L162] SORT_5 var_16_arg_1 = state_9; [L163] SORT_5 var_16_arg_2 = state_7; [L164] SORT_5 var_16 = var_16_arg_0 ? var_16_arg_1 : var_16_arg_2; [L165] var_16 = var_16 & mask_SORT_5 [L166] SORT_5 var_17_arg_0 = var_16; [L167] SORT_5 var_17_arg_1 = var_13; [L168] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L169] SORT_1 var_18_arg_0 = var_14; [L170] SORT_1 var_18_arg_1 = var_17; [L171] SORT_1 var_18 = var_18_arg_0 & var_18_arg_1; [L172] SORT_1 var_19_arg_0 = var_18; [L173] SORT_1 var_19 = ~var_19_arg_0; [L174] SORT_1 var_22_arg_0 = var_19; [L175] SORT_1 var_22 = ~var_22_arg_0; [L176] SORT_1 var_23_arg_0 = var_15; [L177] SORT_1 var_23_arg_1 = var_22; [L178] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L179] var_23 = var_23 & mask_SORT_1 [L180] SORT_1 bad_24_arg_0 = var_23; [L181] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:56:36,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur --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 64bit --witnessprinter.graph.data.programhash 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e --- 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-38b53e6 [2022-11-26 00:56:38,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:56:38,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:56:38,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:56:38,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:56:38,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:56:38,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:56:38,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:56:38,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:56:38,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:56:38,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:56:38,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:56:38,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:56:38,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:56:38,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:56:38,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:56:38,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:56:38,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:56:38,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:56:38,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:56:38,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:56:38,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:56:38,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:56:38,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:56:38,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:56:38,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:56:38,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:56:38,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:56:38,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:56:38,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:56:38,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:56:38,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:56:38,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:56:38,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:56:38,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:56:38,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:56:38,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:56:38,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:56:38,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:56:38,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:56:38,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:56:38,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:56:38,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:56:38,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:56:38,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:56:38,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:56:38,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:56:38,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:56:38,924 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:56:38,925 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:56:38,925 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:56:38,925 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:56:38,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:56:38,925 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:56:38,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:56:38,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:56:38,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:56:38,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:56:38,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:56:38,927 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:56:38,928 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:56:38,928 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:56:38,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:56:38,928 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:56:38,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:56:38,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:56:38,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:56:38,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:56:38,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:56:38,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:56:38,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:56:38,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:56:38,930 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:56:38,930 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:56:38,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:56:38,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:56:38,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:56:38,931 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_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c180476f804e78a8269aef99962c5d7a08d71e1723604e5340567598afce1e [2022-11-26 00:56:39,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:56:39,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:56:39,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:56:39,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:56:39,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:56:39,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-26 00:56:42,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:56:42,911 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:56:42,911 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2022-11-26 00:56:42,922 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/data/e6accb9dc/c9be49ce00d94980a2f7851ed8ffe498/FLAG618979fd7 [2022-11-26 00:56:42,951 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/data/e6accb9dc/c9be49ce00d94980a2f7851ed8ffe498 [2022-11-26 00:56:42,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:56:42,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:56:42,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:56:42,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:56:42,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:56:42,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:56:42" (1/1) ... [2022-11-26 00:56:42,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e2f96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:42, skipping insertion in model container [2022-11-26 00:56:42,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:56:42" (1/1) ... [2022-11-26 00:56:42,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:56:43,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:56:43,185 WARN L237 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_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-26 00:56:43,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:56:43,427 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:56:43,438 WARN L237 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_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1107,1120] [2022-11-26 00:56:43,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:56:43,548 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:56:43,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43 WrapperNode [2022-11-26 00:56:43,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:56:43,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:56:43,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:56:43,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:56:43,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,690 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1032 [2022-11-26 00:56:43,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:56:43,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:56:43,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:56:43,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:56:43,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:56:43,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:56:43,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:56:43,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:56:43,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (1/1) ... [2022-11-26 00:56:43,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:56:43,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:56:43,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:56:43,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:56:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:56:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:56:44,277 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:56:44,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:56:45,641 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:56:45,648 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:56:45,648 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:56:45,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:56:45 BoogieIcfgContainer [2022-11-26 00:56:45,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:56:45,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:56:45,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:56:45,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:56:45,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:56:42" (1/3) ... [2022-11-26 00:56:45,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d15c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:56:45, skipping insertion in model container [2022-11-26 00:56:45,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:56:43" (2/3) ... [2022-11-26 00:56:45,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d15c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:56:45, skipping insertion in model container [2022-11-26 00:56:45,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:56:45" (3/3) ... [2022-11-26 00:56:45,664 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Dekker.c [2022-11-26 00:56:45,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:56:45,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:56:45,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:56:45,752 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;@5b11ca4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:56:45,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:56:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-11-26 00:56:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:56:45,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:45,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:56:45,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:56:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:56:45,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:56:45,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379642940] [2022-11-26 00:56:45,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:45,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:56:45,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:56:45,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:56:45,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:56:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:46,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-26 00:56:46,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:56:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:46,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:56:46,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:56:46,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379642940] [2022-11-26 00:56:46,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379642940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:56:46,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:56:46,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:56:46,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663015636] [2022-11-26 00:56:46,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:56:46,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:56:46,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:56:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:56:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:56:46,443 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2022-11-26 00:56:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:46,711 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:56:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:56:46,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 [2022-11-26 00:56:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:46,723 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:56:46,723 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:56:46,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:56:46,729 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:46,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:56:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:56:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:56:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-26 00:56:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:56:46,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:56:46,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:46,764 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:56:46,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2022-11-26 00:56:46,764 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:56:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:56:46,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:46,765 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:56:46,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:56:46,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:56:46,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:56:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:56:46,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:56:46,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394713991] [2022-11-26 00:56:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:46,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:56:46,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:56:46,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:56:47,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:56:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:47,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-26 00:56:47,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:56:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:49,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:00:54,330 WARN L233 SmtUtils]: Spent 4.05m on a formula simplification. DAG size of input: 213 DAG size of output: 198 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:00:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:55,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:00:55,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394713991] [2022-11-26 01:00:55,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394713991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:00:55,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1387382064] [2022-11-26 01:00:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:55,455 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:00:55,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:00:55,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:00:55,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 01:00:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:56,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-26 01:00:56,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:00:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:57,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:06:47,182 WARN L233 SmtUtils]: Spent 5.74m on a formula simplification. DAG size of input: 213 DAG size of output: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:06:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:48,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1387382064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:06:48,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186847208] [2022-11-26 01:06:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:48,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:06:48,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:06:48,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:06:48,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 01:06:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:49,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-26 01:06:49,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:06:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:51,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:06:59,443 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse9 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (or (let ((.cse23 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_9~0#1|))) (let ((.cse22 (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse23 (_ bv1 32)))))) (_ bv1 32))) (.cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) .cse23)))))))) (.cse12 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_242~0#1|))) (let ((.cse21 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse22 .cse15))) .cse12)))) (.cse18 (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse23 (_ bv2 32)))))) (_ bv2 32))) (.cse14 (not (= |c_ULTIMATE.start_main_~var_15~0#1| (_ bv0 8)))) (.cse13 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_5~0#1|)) (.cse11 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_13~0#1|))) (let ((.cse10 (or (= |c_ULTIMATE.start_main_~var_11~0#1| (_ bv0 8)) (forall ((|v_ULTIMATE.start_main_~var_12_arg_1~0#1_9| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_12_arg_1~0#1_9|)))))) .cse11))))) (.cse5 (and (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse21 .cse18)))))))) .cse11)) .cse14))) (let ((.cse2 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_11~0#1|)) (.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_15~0#1|)) (.cse3 (let ((.cse19 (forall ((|v_ULTIMATE.start_main_~var_248_arg_1~0#1_7| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_248_arg_1~0#1_7|)))))) (_ bv0 8))))) (.cse20 (forall ((|v_ULTIMATE.start_main_~var_248_arg_1~0#1_7| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_248_arg_1~0#1_7|)))))) (_ bv0 8)))) (.cse17 (forall ((|v_ULTIMATE.start_main_~var_254_arg_1~0#1_7| (_ BitVec 8))) (not (= (_ bv0 8) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_254_arg_1~0#1_7|)))))))))) (.cse16 (forall ((|v_ULTIMATE.start_main_~var_254_arg_1~0#1_7| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_254_arg_1~0#1_7|)))))))))) (and (or (and (or (and (or (and .cse14 (forall ((|v_ULTIMATE.start_main_~var_255_arg_1~0#1_7| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_252_arg_1~0#1_7| (_ BitVec 8))) (not (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse15 (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_252_arg_1~0#1_7|))) (_ bv1 32))))) .cse12))) (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_255_arg_1~0#1_7|))) (_ bv2 32))))))) .cse13))))))) .cse16) (or .cse17 (and .cse14 (forall ((|v_ULTIMATE.start_main_~var_252_arg_1~0#1_7| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse15 (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_252_arg_1~0#1_7|))) (_ bv1 32))))) .cse12))) .cse18))))) .cse13))) .cse11)))))) .cse19) (or (and (or (and (forall ((|v_ULTIMATE.start_main_~var_255_arg_1~0#1_7| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_252_arg_1~0#1_7| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_249_arg_1~0#1_7| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_249_arg_1~0#1_7|)))))) (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_252_arg_1~0#1_7|))) (_ bv1 32)))))))) (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_255_arg_1~0#1_7|))) (_ bv2 32))))))) .cse13))) .cse11))) .cse14) .cse16) (or .cse17 (and .cse14 (forall ((|v_ULTIMATE.start_main_~var_252_arg_1~0#1_7| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_249_arg_1~0#1_7| (_ BitVec 8))) (not (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_249_arg_1~0#1_7|)))))) (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_252_arg_1~0#1_7|))) (_ bv1 32)))))))) .cse18))))) .cse13))))))))) .cse20)) (forall ((|v_ULTIMATE.start_main_~var_251_arg_1~0#1_7| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_251_arg_1~0#1_7|) (_ bv1 32)))))) (_ bv0 8)))) (or (forall ((|v_ULTIMATE.start_main_~var_251_arg_1~0#1_7| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_251_arg_1~0#1_7|) (_ bv1 32)))))) (_ bv0 8)))) (and (or .cse19 (and (or .cse5 .cse17) (or (and .cse14 (forall ((|v_ULTIMATE.start_main_~var_255_arg_1~0#1_7| (_ BitVec 8))) (not (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_255_arg_1~0#1_7|))) (_ bv2 32)) .cse21))))) .cse13))))))) .cse16))) (or .cse20 (and (or (and (forall ((|v_ULTIMATE.start_main_~var_249_arg_1~0#1_7| (_ BitVec 8))) (not (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_249_arg_1~0#1_7|))))))))) .cse12))) .cse18))))) .cse13)))))) .cse14) .cse17) (or (and .cse14 (forall ((|v_ULTIMATE.start_main_~var_255_arg_1~0#1_7| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_249_arg_1~0#1_7| (_ BitVec 8))) (not (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_249_arg_1~0#1_7|))))))))) .cse12))) (bvshl ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_255_arg_1~0#1_7|))) (_ bv2 32))))))) .cse13))))))) .cse16)))))))) (.cse6 (and (forall ((|v_ULTIMATE.start_main_~var_243_arg_0~0#1_7| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_244_arg_0~0#1_7| (_ BitVec 8))) (not (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (bvshl ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_244_arg_0~0#1_7|) (_ bv2 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvor (bvshl ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_243_arg_0~0#1_7|) (_ bv1 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_7~0#1|))))))))))))))))))))))))) .cse10))) (and (or (and (or (forall ((|ULTIMATE.start_main_~input_4~0#1| (_ BitVec 8))) (let ((.cse1 ((_ zero_extend 24) |ULTIMATE.start_main_~input_4~0#1|))) (or (not (= .cse0 .cse1)) (= .cse1 .cse2)))) .cse3) (or (forall ((|ULTIMATE.start_main_~input_4~0#1| (_ BitVec 8))) (let ((.cse4 ((_ zero_extend 24) |ULTIMATE.start_main_~input_4~0#1|))) (or (= .cse4 .cse2) (= .cse0 .cse4)))) .cse5)) .cse6) (or (and (or (forall ((|ULTIMATE.start_main_~input_4~0#1| (_ BitVec 8))) (let ((.cse7 ((_ zero_extend 24) |ULTIMATE.start_main_~input_4~0#1|))) (or (not (= .cse7 .cse2)) (= .cse0 .cse7)))) .cse5) (or (forall ((|ULTIMATE.start_main_~input_4~0#1| (_ BitVec 8))) (let ((.cse8 ((_ zero_extend 24) |ULTIMATE.start_main_~input_4~0#1|))) (or (not (= .cse8 .cse2)) (not (= .cse0 .cse8))))) .cse3)) (and (or (forall ((|v_ULTIMATE.start_main_~var_230_arg_1~0#1_7| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_230_arg_1~0#1_7|)))))) (_ bv0 8))) (and .cse10 (forall ((|v_ULTIMATE.start_main_~var_243_arg_0~0#1_7| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_231_arg_1~0#1_7| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_244_arg_0~0#1_7| (_ BitVec 8))) (not (= .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_231_arg_1~0#1_7|)))))) (bvshl ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_243_arg_0~0#1_7|) (_ bv1 32)))))))) (bvshl ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_244_arg_0~0#1_7|) (_ bv2 32))))))) .cse13)))))))) (or (forall ((|v_ULTIMATE.start_main_~var_230_arg_1~0#1_7| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_230_arg_1~0#1_7|)))))) (_ bv0 8)))) .cse6))))))))) (forall ((|v_ULTIMATE.start_main_~var_23_arg_0~0#1_9| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_23_arg_0~0#1_9|) (_ bv1 32)))))) (_ bv0 8))))) is different from false [2022-11-26 01:07:05,971 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-26 01:07:05,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2022-11-26 01:07:05,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-11-26 01:07:05,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 10 [2022-11-26 01:07:05,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033852213] [2022-11-26 01:07:05,974 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-11-26 01:07:05,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-26 01:07:05,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 01:07:05,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:07:05,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 01:07:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=124, Unknown=3, NotChecked=24, Total=210 [2022-11-26 01:07:05,977 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2022-11-26 01:07:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:07:05,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 600.3s TimeCoverageRelationStatistics Valid=59, Invalid=124, Unknown=3, NotChecked=24, Total=210 [2022-11-26 01:07:05,981 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:05,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:07:06,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-26 01:07:06,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 01:07:06,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 01:07:06,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e5f7c5-c7ec-4a03-956f-e77ae570e8e0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-26 01:07:06,602 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@55e1295b at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:460) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:104) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-26 01:07:06,606 INFO L158 Benchmark]: Toolchain (without parser) took 623650.86ms. Allocated memory was 83.9MB in the beginning and 207.6MB in the end (delta: 123.7MB). Free memory was 63.5MB in the beginning and 92.5MB in the end (delta: -29.0MB). Peak memory consumption was 94.8MB. Max. memory is 16.1GB. [2022-11-26 01:07:06,606 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 61.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:07:06,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.00ms. Allocated memory is still 83.9MB. Free memory was 63.3MB in the beginning and 52.4MB in the end (delta: 10.9MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2022-11-26 01:07:06,607 INFO L158 Benchmark]: Boogie Procedure Inliner took 140.36ms. Allocated memory is still 83.9MB. Free memory was 52.4MB in the beginning and 44.6MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-26 01:07:06,608 INFO L158 Benchmark]: Boogie Preprocessor took 131.83ms. Allocated memory is still 83.9MB. Free memory was 44.6MB in the beginning and 39.8MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 01:07:06,609 INFO L158 Benchmark]: RCFGBuilder took 1826.85ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 39.8MB in the beginning and 60.7MB in the end (delta: -20.9MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2022-11-26 01:07:06,609 INFO L158 Benchmark]: TraceAbstraction took 620953.21ms. Allocated memory was 115.3MB in the beginning and 207.6MB in the end (delta: 92.3MB). Free memory was 59.9MB in the beginning and 92.5MB in the end (delta: -32.7MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. [2022-11-26 01:07:06,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 61.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 593.00ms. Allocated memory is still 83.9MB. Free memory was 63.3MB in the beginning and 52.4MB in the end (delta: 10.9MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 140.36ms. Allocated memory is still 83.9MB. Free memory was 52.4MB in the beginning and 44.6MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 131.83ms. Allocated memory is still 83.9MB. Free memory was 44.6MB in the beginning and 39.8MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1826.85ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 39.8MB in the beginning and 60.7MB in the end (delta: -20.9MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. * TraceAbstraction took 620953.21ms. Allocated memory was 115.3MB in the beginning and 207.6MB in the end (delta: 92.3MB). Free memory was 59.9MB in the beginning and 92.5MB in the end (delta: -32.7MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@55e1295b de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@55e1295b: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@55e1295b