./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh --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 e717dbaa7c87680e2898e20401e6a0e780331d7eabb7d7391b67acb5da3c5ec1 --- 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-2329fc7 [2022-12-14 15:29:08,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:29:08,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:29:08,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:29:08,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:29:08,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:29:08,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:29:08,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:29:08,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:29:08,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:29:08,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:29:08,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:29:08,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:29:08,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:29:08,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:29:08,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:29:08,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:29:08,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:29:08,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:29:08,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:29:08,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:29:08,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:29:08,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:29:08,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:29:08,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:29:08,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:29:08,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:29:08,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:29:08,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:29:08,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:29:08,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:29:08,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:29:08,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:29:08,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:29:08,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:29:08,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:29:08,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:29:08,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:29:08,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:29:08,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:29:08,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:29:08,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 15:29:08,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:29:08,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:29:08,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:29:08,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:29:08,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:29:08,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:29:08,435 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:29:08,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:29:08,435 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:29:08,435 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:29:08,435 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:29:08,435 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:29:08,436 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:29:08,436 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:29:08,436 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:29:08,436 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:29:08,436 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:29:08,436 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:29:08,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:29:08,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:29:08,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:29:08,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:29:08,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:29:08,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:29:08,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:29:08,438 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:29:08,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:29:08,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:29:08,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:29:08,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:29:08,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:29:08,439 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:29:08,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:29:08,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:29:08,439 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:29:08,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:29:08,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:29:08,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:29:08,439 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_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e717dbaa7c87680e2898e20401e6a0e780331d7eabb7d7391b67acb5da3c5ec1 [2022-12-14 15:29:08,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:29:08,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:29:08,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:29:08,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:29:08,639 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:29:08,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c [2022-12-14 15:29:11,205 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:29:11,384 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:29:11,385 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c [2022-12-14 15:29:11,393 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/data/4597e3fe6/b55553485d6241168ab878b04b24481f/FLAG93d063f9d [2022-12-14 15:29:11,406 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/data/4597e3fe6/b55553485d6241168ab878b04b24481f [2022-12-14 15:29:11,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:29:11,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:29:11,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:29:11,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:29:11,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:29:11,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65023694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11, skipping insertion in model container [2022-12-14 15:29:11,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:29:11,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:29:11,562 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_990fef05-820f-4f57-be07-29ae5f829eb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c[1107,1120] [2022-12-14 15:29:11,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:29:11,661 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:29:11,669 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_990fef05-820f-4f57-be07-29ae5f829eb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c[1107,1120] [2022-12-14 15:29:11,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:29:11,728 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:29:11,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11 WrapperNode [2022-12-14 15:29:11,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:29:11,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:29:11,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:29:11,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:29:11,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,776 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 742 [2022-12-14 15:29:11,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:29:11,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:29:11,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:29:11,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:29:11,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,807 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:29:11,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:29:11,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:29:11,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:29:11,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (1/1) ... [2022-12-14 15:29:11,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:29:11,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:29:11,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:29:11,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:29:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:29:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:29:12,038 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:29:12,040 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:29:16,117 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:29:16,138 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:29:16,138 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:29:16,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:29:16 BoogieIcfgContainer [2022-12-14 15:29:16,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:29:16,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:29:16,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:29:16,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:29:16,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:29:11" (1/3) ... [2022-12-14 15:29:16,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7c244f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:29:16, skipping insertion in model container [2022-12-14 15:29:16,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:11" (2/3) ... [2022-12-14 15:29:16,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7c244f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:29:16, skipping insertion in model container [2022-12-14 15:29:16,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:29:16" (3/3) ... [2022-12-14 15:29:16,148 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p2.c [2022-12-14 15:29:16,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:29:16,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:29:16,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:29:16,199 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;@779051bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:29:16,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:29:16,202 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) [2022-12-14 15:29:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 15:29:16,206 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:29:16,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 15:29:16,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:29:16,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:29:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 15:29:16,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:29:16,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453297614] [2022-12-14 15:29:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:29:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:29:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:29:16,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:29:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:29:16,462 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:29:16,463 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:29:16,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 15:29:16,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:29:16,469 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 15:29:16,471 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:29:16,488 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 15:29:16,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:29:16 BoogieIcfgContainer [2022-12-14 15:29:16,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:29:16,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:29:16,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:29:16,495 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:29:16,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:29:16" (3/4) ... [2022-12-14 15:29:16,498 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 15:29:16,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:29:16,499 INFO L158 Benchmark]: Toolchain (without parser) took 5088.85ms. Allocated memory was 123.7MB in the beginning and 423.6MB in the end (delta: 299.9MB). Free memory was 85.7MB in the beginning and 357.3MB in the end (delta: -271.6MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-12-14 15:29:16,499 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:29:16,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.48ms. Allocated memory is still 123.7MB. Free memory was 85.2MB in the beginning and 58.9MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 15:29:16,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.39ms. Allocated memory is still 123.7MB. Free memory was 58.9MB in the beginning and 51.7MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 15:29:16,500 INFO L158 Benchmark]: Boogie Preprocessor took 50.34ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 51.7MB in the beginning and 116.9MB in the end (delta: -65.2MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2022-12-14 15:29:16,501 INFO L158 Benchmark]: RCFGBuilder took 4312.87ms. Allocated memory was 148.9MB in the beginning and 423.6MB in the end (delta: 274.7MB). Free memory was 116.9MB in the beginning and 145.7MB in the end (delta: -28.8MB). Peak memory consumption was 252.0MB. Max. memory is 16.1GB. [2022-12-14 15:29:16,501 INFO L158 Benchmark]: TraceAbstraction took 351.90ms. Allocated memory is still 423.6MB. Free memory was 144.6MB in the beginning and 358.3MB in the end (delta: -213.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:29:16,501 INFO L158 Benchmark]: Witness Printer took 2.88ms. Allocated memory is still 423.6MB. Free memory was 358.3MB in the beginning and 357.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:29:16,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.48ms. Allocated memory is still 123.7MB. Free memory was 85.2MB in the beginning and 58.9MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.39ms. Allocated memory is still 123.7MB. Free memory was 58.9MB in the beginning and 51.7MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.34ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 51.7MB in the beginning and 116.9MB in the end (delta: -65.2MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * RCFGBuilder took 4312.87ms. Allocated memory was 148.9MB in the beginning and 423.6MB in the end (delta: 274.7MB). Free memory was 116.9MB in the beginning and 145.7MB in the end (delta: -28.8MB). Peak memory consumption was 252.0MB. Max. memory is 16.1GB. * TraceAbstraction took 351.90ms. Allocated memory is still 423.6MB. Free memory was 144.6MB in the beginning and 358.3MB in the end (delta: -213.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.88ms. Allocated memory is still 423.6MB. Free memory was 358.3MB in the beginning and 357.3MB in the end (delta: 1.0MB). 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 233, overapproximation of bitwiseOr at line 219, overapproximation of bitwiseAnd at line 197. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 8); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (8 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L37] const SORT_45 mask_SORT_45 = (SORT_45)-1 >> (sizeof(SORT_45) * 8 - 6); [L38] const SORT_45 msb_SORT_45 = (SORT_45)1 << (6 - 1); [L40] const SORT_55 mask_SORT_55 = (SORT_55)-1 >> (sizeof(SORT_55) * 8 - 32); [L41] const SORT_55 msb_SORT_55 = (SORT_55)1 << (32 - 1); [L43] const SORT_61 mask_SORT_61 = (SORT_61)-1 >> (sizeof(SORT_61) * 8 - 25); [L44] const SORT_61 msb_SORT_61 = (SORT_61)1 << (25 - 1); [L46] const SORT_63 mask_SORT_63 = (SORT_63)-1 >> (sizeof(SORT_63) * 8 - 7); [L47] const SORT_63 msb_SORT_63 = (SORT_63)1 << (7 - 1); [L49] const SORT_84 mask_SORT_84 = (SORT_84)-1 >> (sizeof(SORT_84) * 8 - 2); [L50] const SORT_84 msb_SORT_84 = (SORT_84)1 << (2 - 1); [L52] const SORT_122 mask_SORT_122 = (SORT_122)-1 >> (sizeof(SORT_122) * 8 - 3); [L53] const SORT_122 msb_SORT_122 = (SORT_122)1 << (3 - 1); [L55] const SORT_1 var_17 = 0; [L56] const SORT_1 var_41 = 1; [L57] const SORT_45 var_46 = 0; [L58] const SORT_5 var_50 = 0; [L59] const SORT_5 var_56 = 2; [L60] const SORT_55 var_58 = 2; [L61] const SORT_61 var_62 = 0; [L62] const SORT_55 var_66 = 1; [L63] const SORT_55 var_112 = 0; [L64] const SORT_45 var_218 = 33; [L65] const SORT_5 var_227 = 1; [L67] SORT_1 input_2; [L68] SORT_3 input_4; [L69] SORT_5 input_6; [L70] SORT_7 input_8; [L71] SORT_1 input_9; [L72] SORT_1 input_10; [L73] SORT_1 input_11; [L74] SORT_1 input_12; [L75] SORT_7 input_13; [L76] SORT_1 input_14; [L77] SORT_1 input_15; [L78] SORT_1 input_16; [L79] SORT_84 input_85; [L80] SORT_1 input_87; [L81] SORT_1 input_89; [L82] SORT_1 input_91; [L83] SORT_1 input_99; [L84] SORT_1 input_105; [L85] SORT_1 input_134; [L86] SORT_1 input_149; [L87] SORT_7 input_162; [L88] SORT_1 input_164; [L89] SORT_3 input_166; [L90] SORT_5 input_168; [L91] SORT_1 input_179; [L93] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_45 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_45; [L101] SORT_5 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L102] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_76 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_80 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_82 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_93 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_95 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_101 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_103 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_107 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_136 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_138 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_142 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_144 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_151 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_153 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_170 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_172 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_181 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_183 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_185 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_1 init_19_arg_1 = var_17; [L126] state_18 = init_19_arg_1 [L127] SORT_1 init_21_arg_1 = var_17; [L128] state_20 = init_21_arg_1 [L129] SORT_1 init_24_arg_1 = var_17; [L130] state_23 = init_24_arg_1 [L131] SORT_1 init_27_arg_1 = var_17; [L132] state_26 = init_27_arg_1 [L133] SORT_1 init_30_arg_1 = var_17; [L134] state_29 = init_30_arg_1 [L135] SORT_1 init_33_arg_1 = var_17; [L136] state_32 = init_33_arg_1 [L137] SORT_1 init_37_arg_1 = var_17; [L138] state_36 = init_37_arg_1 [L139] SORT_45 init_48_arg_1 = var_46; [L140] state_47 = init_48_arg_1 [L141] SORT_5 init_52_arg_1 = var_50; [L142] state_51 = init_52_arg_1 [L143] SORT_1 init_71_arg_1 = var_17; [L144] state_70 = init_71_arg_1 [L145] SORT_1 init_77_arg_1 = var_17; [L146] state_76 = init_77_arg_1 [L147] SORT_1 init_81_arg_1 = var_17; [L148] state_80 = init_81_arg_1 [L149] SORT_1 init_83_arg_1 = var_17; [L150] state_82 = init_83_arg_1 [L151] SORT_1 init_94_arg_1 = var_17; [L152] state_93 = init_94_arg_1 [L153] SORT_1 init_96_arg_1 = var_17; [L154] state_95 = init_96_arg_1 [L155] SORT_1 init_98_arg_1 = var_17; [L156] state_97 = init_98_arg_1 [L157] SORT_1 init_102_arg_1 = var_17; [L158] state_101 = init_102_arg_1 [L159] SORT_1 init_104_arg_1 = var_17; [L160] state_103 = init_104_arg_1 [L161] SORT_1 init_108_arg_1 = var_17; [L162] state_107 = init_108_arg_1 [L163] SORT_1 init_137_arg_1 = var_17; [L164] state_136 = init_137_arg_1 [L165] SORT_1 init_139_arg_1 = var_17; [L166] state_138 = init_139_arg_1 [L167] SORT_1 init_141_arg_1 = var_17; [L168] state_140 = init_141_arg_1 [L169] SORT_1 init_143_arg_1 = var_17; [L170] state_142 = init_143_arg_1 [L171] SORT_1 init_145_arg_1 = var_17; [L172] state_144 = init_145_arg_1 [L173] SORT_1 init_152_arg_1 = var_17; [L174] state_151 = init_152_arg_1 [L175] SORT_1 init_154_arg_1 = var_17; [L176] state_153 = init_154_arg_1 [L177] SORT_1 init_171_arg_1 = var_17; [L178] state_170 = init_171_arg_1 [L179] SORT_1 init_173_arg_1 = var_17; [L180] state_172 = init_173_arg_1 [L181] SORT_1 init_182_arg_1 = var_17; [L182] state_181 = init_182_arg_1 [L183] SORT_1 init_184_arg_1 = var_17; [L184] state_183 = init_184_arg_1 [L185] SORT_1 init_186_arg_1 = var_17; [L186] state_185 = init_186_arg_1 VAL [init_102_arg_1=0, init_104_arg_1=0, init_108_arg_1=0, init_137_arg_1=0, init_139_arg_1=0, init_141_arg_1=0, init_143_arg_1=0, init_145_arg_1=0, init_152_arg_1=0, init_154_arg_1=0, init_171_arg_1=0, init_173_arg_1=0, init_182_arg_1=0, init_184_arg_1=0, init_186_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_27_arg_1=0, init_30_arg_1=0, init_33_arg_1=0, init_37_arg_1=0, init_48_arg_1=0, init_52_arg_1=0, init_71_arg_1=0, init_77_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_94_arg_1=0, init_96_arg_1=0, init_98_arg_1=0, mask_SORT_1=1, mask_SORT_122=7, mask_SORT_3=65535, mask_SORT_45=63, mask_SORT_5=255, mask_SORT_55=4294967295, mask_SORT_61=4294967295, mask_SORT_63=127, mask_SORT_7=31, mask_SORT_84=3, msb_SORT_1=1, msb_SORT_122=4, msb_SORT_3=32768, msb_SORT_45=32, msb_SORT_5=128, msb_SORT_55=2147483648, msb_SORT_61=16777216, msb_SORT_63=64, msb_SORT_7=16, msb_SORT_84=2, state_101=0, state_103=0, state_107=0, state_136=0, state_138=0, state_140=0, state_142=0, state_144=0, state_151=0, state_153=0, state_170=0, state_172=0, state_18=0, state_181=0, state_183=0, state_185=0, state_20=0, state_23=0, state_26=0, state_29=0, state_32=0, state_36=0, state_47=0, state_51=0, state_70=0, state_76=0, state_80=0, state_82=0, state_93=0, state_95=0, state_97=0, var_112=0, var_17=0, var_218=33, var_227=1, var_41=1, var_46=0, var_50=0, var_56=2, var_58=2, var_62=0, var_66=1] [L189] input_2 = __VERIFIER_nondet_uchar() [L190] input_4 = __VERIFIER_nondet_ushort() [L191] input_6 = __VERIFIER_nondet_uchar() [L192] input_8 = __VERIFIER_nondet_uchar() [L193] input_9 = __VERIFIER_nondet_uchar() [L194] input_10 = __VERIFIER_nondet_uchar() [L195] input_11 = __VERIFIER_nondet_uchar() [L196] input_12 = __VERIFIER_nondet_uchar() [L197] input_12 = input_12 & mask_SORT_1 [L198] input_13 = __VERIFIER_nondet_uchar() [L199] input_14 = __VERIFIER_nondet_uchar() [L200] input_15 = __VERIFIER_nondet_uchar() [L201] input_16 = __VERIFIER_nondet_uchar() [L202] input_85 = __VERIFIER_nondet_uchar() [L203] input_87 = __VERIFIER_nondet_uchar() [L204] input_89 = __VERIFIER_nondet_uchar() [L205] input_91 = __VERIFIER_nondet_uchar() [L206] input_99 = __VERIFIER_nondet_uchar() [L207] input_105 = __VERIFIER_nondet_uchar() [L208] input_134 = __VERIFIER_nondet_uchar() [L209] input_149 = __VERIFIER_nondet_uchar() [L210] input_162 = __VERIFIER_nondet_uchar() [L211] input_164 = __VERIFIER_nondet_uchar() [L212] input_166 = __VERIFIER_nondet_ushort() [L213] input_168 = __VERIFIER_nondet_uchar() [L214] input_179 = __VERIFIER_nondet_uchar() [L217] SORT_1 var_22_arg_0 = state_18; [L218] SORT_1 var_22_arg_1 = state_20; [L219] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L220] SORT_1 var_25_arg_0 = var_22; [L221] SORT_1 var_25_arg_1 = state_23; [L222] SORT_1 var_25 = var_25_arg_0 | var_25_arg_1; [L223] SORT_1 var_28_arg_0 = var_25; [L224] SORT_1 var_28_arg_1 = state_26; [L225] SORT_1 var_28 = var_28_arg_0 | var_28_arg_1; [L226] SORT_1 var_31_arg_0 = var_28; [L227] SORT_1 var_31_arg_1 = state_29; [L228] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L229] SORT_1 var_34_arg_0 = var_31; [L230] SORT_1 var_34_arg_1 = state_32; [L231] SORT_1 var_34 = var_34_arg_0 | var_34_arg_1; [L232] SORT_1 var_35_arg_0 = var_34; [L233] SORT_1 var_35 = ~var_35_arg_0; [L234] SORT_1 var_38_arg_0 = var_35; [L235] SORT_1 var_38_arg_1 = state_36; [L236] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L237] SORT_1 var_42_arg_0 = var_38; [L238] SORT_1 var_42 = ~var_42_arg_0; [L239] SORT_1 var_43_arg_0 = var_41; [L240] SORT_1 var_43_arg_1 = var_42; [L241] SORT_1 var_43 = var_43_arg_0 & var_43_arg_1; [L242] var_43 = var_43 & mask_SORT_1 [L243] SORT_1 bad_44_arg_0 = var_43; [L244] CALL __VERIFIER_assert(!(bad_44_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: 0.3s, 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, 0.1s 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 [2022-12-14 15:29:16,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh --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 e717dbaa7c87680e2898e20401e6a0e780331d7eabb7d7391b67acb5da3c5ec1 --- 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-2329fc7 [2022-12-14 15:29:18,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:29:18,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:29:18,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:29:18,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:29:18,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:29:18,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:29:18,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:29:18,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:29:18,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:29:18,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:29:18,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:29:18,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:29:18,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:29:18,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:29:18,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:29:18,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:29:18,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:29:18,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:29:18,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:29:18,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:29:18,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:29:18,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:29:18,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:29:18,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:29:18,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:29:18,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:29:18,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:29:18,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:29:18,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:29:18,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:29:18,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:29:18,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:29:18,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:29:18,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:29:18,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:29:18,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:29:18,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:29:18,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:29:18,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:29:18,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:29:18,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 15:29:18,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:29:18,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:29:18,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:29:18,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:29:18,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:29:18,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:29:18,272 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:29:18,273 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:29:18,273 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:29:18,273 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:29:18,273 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:29:18,273 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:29:18,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:29:18,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:29:18,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:29:18,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 15:29:18,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:29:18,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:29:18,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:29:18,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:29:18,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:29:18,275 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 15:29:18,275 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 15:29:18,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:29:18,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:29:18,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 15:29:18,276 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_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e717dbaa7c87680e2898e20401e6a0e780331d7eabb7d7391b67acb5da3c5ec1 [2022-12-14 15:29:18,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:29:18,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:29:18,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:29:18,497 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:29:18,497 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:29:18,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c [2022-12-14 15:29:21,073 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:29:21,225 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:29:21,226 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c [2022-12-14 15:29:21,233 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/data/49661ab07/edecbb05a0924eec9ac4a8382bb1412c/FLAG02c3c80b3 [2022-12-14 15:29:21,244 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/data/49661ab07/edecbb05a0924eec9ac4a8382bb1412c [2022-12-14 15:29:21,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:29:21,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:29:21,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:29:21,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:29:21,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:29:21,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2739de9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21, skipping insertion in model container [2022-12-14 15:29:21,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:29:21,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:29:21,415 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_990fef05-820f-4f57-be07-29ae5f829eb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c[1107,1120] [2022-12-14 15:29:21,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:29:21,557 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:29:21,568 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_990fef05-820f-4f57-be07-29ae5f829eb9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c[1107,1120] [2022-12-14 15:29:21,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:29:21,649 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:29:21,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21 WrapperNode [2022-12-14 15:29:21,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:29:21,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:29:21,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:29:21,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:29:21,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,700 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 742 [2022-12-14 15:29:21,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:29:21,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:29:21,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:29:21,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:29:21,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,728 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:29:21,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:29:21,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:29:21,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:29:21,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (1/1) ... [2022-12-14 15:29:21,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:29:21,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:29:21,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:29:21,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:29:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:29:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:29:21,975 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:29:21,978 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:29:22,432 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:29:22,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:29:22,439 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:29:22,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:29:22 BoogieIcfgContainer [2022-12-14 15:29:22,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:29:22,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:29:22,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:29:22,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:29:22,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:29:21" (1/3) ... [2022-12-14 15:29:22,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4dce34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:29:22, skipping insertion in model container [2022-12-14 15:29:22,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:29:21" (2/3) ... [2022-12-14 15:29:22,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4dce34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:29:22, skipping insertion in model container [2022-12-14 15:29:22,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:29:22" (3/3) ... [2022-12-14 15:29:22,448 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p2.c [2022-12-14 15:29:22,461 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:29:22,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:29:22,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:29:22,508 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;@5612ce73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:29:22,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:29:22,511 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) [2022-12-14 15:29:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:29:22,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:29:22,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:29:22,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:29:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:29:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 15:29:22,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:29:22,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380313703] [2022-12-14 15:29:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:29:22,537 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 [2022-12-14 15:29:22,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:29:22,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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) [2022-12-14 15:29:22,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:29:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:29:22,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 15:29:22,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:29:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:29:22,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:29:22,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:29:22,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380313703] [2022-12-14 15:29:22,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380313703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:29:22,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:29:22,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:29:22,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580257296] [2022-12-14 15:29:22,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:29:22,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:29:22,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:29:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:29:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:29:22,867 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) [2022-12-14 15:29:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:29:22,956 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 15:29:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:29:22,958 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 [2022-12-14 15:29:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:29:22,964 INFO L225 Difference]: With dead ends: 20 [2022-12-14 15:29:22,964 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 15:29:22,966 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 [2022-12-14 15:29:22,970 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:29:22,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:29:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 15:29:22,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 15:29:22,991 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) [2022-12-14 15:29:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 15:29:22,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 15:29:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:29:22,993 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 15:29:22,993 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) [2022-12-14 15:29:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 15:29:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:29:22,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:29:22,994 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 15:29:23,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:29:23,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:29:23,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:29:23,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:29:23,198 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 15:29:23,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:29:23,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752398165] [2022-12-14 15:29:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:29:23,204 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 [2022-12-14 15:29:23,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:29:23,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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) [2022-12-14 15:29:23,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:29:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:29:23,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 156 conjunts are in the unsatisfiable core [2022-12-14 15:29:23,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:29:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:29:24,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:31:24,934 WARN L233 SmtUtils]: Spent 1.90m on a formula simplification. DAG size of input: 948 DAG size of output: 318 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:31:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:31:29,623 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:31:29,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752398165] [2022-12-14 15:31:29,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752398165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:31:29,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1073135821] [2022-12-14 15:31:29,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:29,624 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:31:29,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:31:29,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:31:29,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 15:31:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:30,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 157 conjunts are in the unsatisfiable core [2022-12-14 15:31:30,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:31:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:31:30,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:33:05,504 WARN L233 SmtUtils]: Spent 1.39m on a formula simplification. DAG size of input: 898 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:33:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:05,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1073135821] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:33:05,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360029462] [2022-12-14 15:33:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:05,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:05,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:05,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:33:05,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:33:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:05,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 157 conjunts are in the unsatisfiable core [2022-12-14 15:33:05,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:33:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:06,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:33:56,108 WARN L233 SmtUtils]: Spent 36.89s on a formula simplification. DAG size of input: 878 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:33:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:59,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360029462] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:33:59,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 15:33:59,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 6, 6] total 15 [2022-12-14 15:33:59,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741150301] [2022-12-14 15:33:59,321 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 15:33:59,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 15:33:59,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:33:59,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 15:33:59,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=151, Unknown=11, NotChecked=0, Total=210 [2022-12-14 15:33:59,323 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 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) [2022-12-14 15:33:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:33:59,729 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 15:33:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 15:33:59,730 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 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 8 [2022-12-14 15:33:59,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:33:59,730 INFO L225 Difference]: With dead ends: 16 [2022-12-14 15:33:59,730 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 15:33:59,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 259.4s TimeCoverageRelationStatistics Valid=82, Invalid=213, Unknown=11, NotChecked=0, Total=306 [2022-12-14 15:33:59,731 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:33:59,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 36 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:33:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 15:33:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 15:33:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-12-14 15:33:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 15:33:59,734 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 15:33:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:33:59,734 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 15:33:59,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 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) [2022-12-14 15:33:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 15:33:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:33:59,734 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:59,735 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 15:33:59,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 15:33:59,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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)] Forceful destruction successful, exit code 0 [2022-12-14 15:34:00,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:34:00,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:34:00,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:34:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:34:00,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 15:34:00,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:34:00,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102873905] [2022-12-14 15:34:00,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:34:00,344 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 [2022-12-14 15:34:00,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:34:00,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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) [2022-12-14 15:34:00,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990fef05-820f-4f57-be07-29ae5f829eb9/bin/utaipan-gh47qXpMRh/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 (6)] Waiting until timeout for monitored process [2022-12-14 15:34:00,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:34:00,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:34:00,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 328 conjunts are in the unsatisfiable core [2022-12-14 15:34:00,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:34:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:34:04,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:36:23,408 WARN L233 SmtUtils]: Spent 2.17m on a formula simplification. DAG size of input: 1354 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)