./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 b5fe367c9a890ae5613cb19b6f1be85d87bd259eb1f495691e3488afa1f5ae07 --- 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 14:04:33,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:04:33,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:04:33,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:04:33,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:04:33,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:04:33,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:04:33,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:04:33,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:04:33,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:04:33,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:04:33,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:04:33,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:04:33,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:04:33,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:04:33,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:04:33,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:04:33,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:04:33,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:04:33,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:04:33,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:04:33,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:04:33,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:04:33,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:04:33,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:04:33,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:04:33,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:04:33,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:04:33,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:04:33,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:04:33,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:04:33,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:04:33,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:04:33,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:04:33,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:04:33,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:04:33,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:04:33,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:04:33,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:04:33,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:04:33,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:04:33,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 14:04:33,674 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:04:33,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:04:33,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:04:33,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:04:33,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:04:33,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:04:33,676 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:04:33,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:04:33,676 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:04:33,676 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:04:33,677 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:04:33,677 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:04:33,677 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:04:33,677 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:04:33,677 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:04:33,677 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:04:33,678 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:04:33,678 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:04:33,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:04:33,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:04:33,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:04:33,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:04:33,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:04:33,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:04:33,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:04:33,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:04:33,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:04:33,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:04:33,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:04:33,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:04:33,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:04:33,681 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:04:33,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:04:33,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:04:33,681 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:04:33,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:04:33,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:04:33,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:04:33,682 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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5fe367c9a890ae5613cb19b6f1be85d87bd259eb1f495691e3488afa1f5ae07 [2022-12-14 14:04:33,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:04:33,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:04:33,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:04:33,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:04:33,905 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:04:33,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c [2022-12-14 14:04:36,486 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:04:36,734 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:04:36,734 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c [2022-12-14 14:04:36,749 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/data/bb2ea4f04/039b6c30c442422090b034179e885eb5/FLAG2ed322214 [2022-12-14 14:04:36,760 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/data/bb2ea4f04/039b6c30c442422090b034179e885eb5 [2022-12-14 14:04:36,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:04:36,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:04:36,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:04:36,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:04:36,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:04:36,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:04:36" (1/1) ... [2022-12-14 14:04:36,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fd1b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:36, skipping insertion in model container [2022-12-14 14:04:36,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:04:36" (1/1) ... [2022-12-14 14:04:36,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:04:36,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:04:36,936 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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c[1107,1120] [2022-12-14 14:04:37,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:04:37,146 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:04:37,154 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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c[1107,1120] [2022-12-14 14:04:37,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:04:37,286 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:04:37,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37 WrapperNode [2022-12-14 14:04:37,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:04:37,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:04:37,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:04:37,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:04:37,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,386 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1878 [2022-12-14 14:04:37,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:04:37,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:04:37,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:04:37,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:04:37,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:04:37,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:04:37,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:04:37,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:04:37,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (1/1) ... [2022-12-14 14:04:37,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:04:37,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:04:37,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:04:37,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:04:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:04:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:04:37,799 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:04:37,801 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:05:52,510 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:05:52,540 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:05:52,540 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:05:52,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:05:52 BoogieIcfgContainer [2022-12-14 14:05:52,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:05:52,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:05:52,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:05:52,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:05:52,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:04:36" (1/3) ... [2022-12-14 14:05:52,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd69f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:05:52, skipping insertion in model container [2022-12-14 14:05:52,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:37" (2/3) ... [2022-12-14 14:05:52,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd69f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:05:52, skipping insertion in model container [2022-12-14 14:05:52,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:05:52" (3/3) ... [2022-12-14 14:05:52,548 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_buf_bug.c [2022-12-14 14:05:52,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:05:52,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:05:52,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:05:52,600 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;@4e3ff931, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:05:52,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:05:52,603 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 14:05:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:05:52,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:05:52,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:05:52,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:05:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:05:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 14:05:52,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:05:52,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551521541] [2022-12-14 14:05:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:05:52,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:05:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:05:52,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:05:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:05:52,909 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:05:52,911 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:05:52,912 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 14:05:52,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:05:52,918 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 14:05:52,922 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:05:52,944 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 14:05:52,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:05:52 BoogieIcfgContainer [2022-12-14 14:05:52,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:05:52,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:05:52,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:05:52,955 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:05:52,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:05:52" (3/4) ... [2022-12-14 14:05:52,958 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:05:52,958 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:05:52,959 INFO L158 Benchmark]: Toolchain (without parser) took 76195.08ms. Allocated memory was 165.7MB in the beginning and 989.9MB in the end (delta: 824.2MB). Free memory was 117.8MB in the beginning and 897.5MB in the end (delta: -779.7MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2022-12-14 14:05:52,960 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:05:52,960 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.61ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 117.8MB in the beginning and 143.5MB in the end (delta: -25.7MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. [2022-12-14 14:05:52,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.30ms. Allocated memory is still 199.2MB. Free memory was 143.5MB in the beginning and 126.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 14:05:52,962 INFO L158 Benchmark]: Boogie Preprocessor took 68.13ms. Allocated memory is still 199.2MB. Free memory was 126.8MB in the beginning and 118.3MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 14:05:52,962 INFO L158 Benchmark]: RCFGBuilder took 75085.79ms. Allocated memory was 199.2MB in the beginning and 989.9MB in the end (delta: 790.6MB). Free memory was 118.3MB in the beginning and 347.9MB in the end (delta: -229.6MB). Peak memory consumption was 578.9MB. Max. memory is 16.1GB. [2022-12-14 14:05:52,963 INFO L158 Benchmark]: TraceAbstraction took 410.79ms. Allocated memory is still 989.9MB. Free memory was 347.9MB in the beginning and 898.5MB in the end (delta: -550.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:05:52,964 INFO L158 Benchmark]: Witness Printer took 3.54ms. Allocated memory is still 989.9MB. Free memory was 898.5MB in the beginning and 897.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:05:52,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.61ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 117.8MB in the beginning and 143.5MB in the end (delta: -25.7MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.30ms. Allocated memory is still 199.2MB. Free memory was 143.5MB in the beginning and 126.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.13ms. Allocated memory is still 199.2MB. Free memory was 126.8MB in the beginning and 118.3MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 75085.79ms. Allocated memory was 199.2MB in the beginning and 989.9MB in the end (delta: 790.6MB). Free memory was 118.3MB in the beginning and 347.9MB in the end (delta: -229.6MB). Peak memory consumption was 578.9MB. Max. memory is 16.1GB. * TraceAbstraction took 410.79ms. Allocated memory is still 989.9MB. Free memory was 347.9MB in the beginning and 898.5MB in the end (delta: -550.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.54ms. Allocated memory is still 989.9MB. Free memory was 898.5MB in the beginning and 897.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 145, overapproximation of bitwiseAnd at line 132. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L31] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L32] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L34] const SORT_22 mask_SORT_22 = (SORT_22)-1 >> (sizeof(SORT_22) * 8 - 32); [L35] const SORT_22 msb_SORT_22 = (SORT_22)1 << (32 - 1); [L37] const SORT_7 var_8 = 0; [L38] const SORT_7 var_11 = 16; [L39] const SORT_1 var_15 = 1; [L40] const SORT_1 var_19 = 0; [L41] const SORT_22 var_23 = 0; [L42] const SORT_22 var_24 = 15; [L43] const SORT_22 var_74 = 14; [L44] const SORT_22 var_92 = 13; [L45] const SORT_22 var_110 = 12; [L46] const SORT_22 var_128 = 11; [L47] const SORT_22 var_146 = 10; [L48] const SORT_22 var_164 = 9; [L49] const SORT_22 var_182 = 8; [L50] const SORT_22 var_200 = 7; [L51] const SORT_22 var_218 = 6; [L52] const SORT_22 var_236 = 5; [L53] const SORT_22 var_254 = 4; [L54] const SORT_22 var_272 = 3; [L55] const SORT_22 var_290 = 2; [L56] const SORT_22 var_308 = 1; [L57] const SORT_22 var_350 = 16; [L58] const SORT_4 var_356 = 0; [L60] SORT_1 input_2; [L61] SORT_1 input_3; [L62] SORT_4 input_5; [L63] SORT_1 input_6; [L64] SORT_1 input_345; [L65] SORT_4 input_347; [L66] SORT_1 input_386; [L67] SORT_4 input_388; [L68] SORT_1 input_404; [L69] SORT_4 input_408; [L71] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L72] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_66 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_7 init_10_arg_1 = var_8; [L91] state_9 = init_10_arg_1 [L92] SORT_1 init_21_arg_1 = var_19; [L93] state_20 = init_21_arg_1 [L94] SORT_1 init_26_arg_1 = var_19; [L95] state_25 = init_26_arg_1 [L96] SORT_1 init_28_arg_1 = var_19; [L97] state_27 = init_28_arg_1 [L98] SORT_1 init_31_arg_1 = var_19; [L99] state_30 = init_31_arg_1 [L100] SORT_1 init_33_arg_1 = var_19; [L101] state_32 = init_33_arg_1 [L102] SORT_1 init_37_arg_1 = var_19; [L103] state_36 = init_37_arg_1 [L104] SORT_1 init_39_arg_1 = var_19; [L105] state_38 = init_39_arg_1 [L106] SORT_1 init_42_arg_1 = var_19; [L107] state_41 = init_42_arg_1 [L108] SORT_1 init_44_arg_1 = var_19; [L109] state_43 = init_44_arg_1 [L110] SORT_1 init_49_arg_1 = var_19; [L111] state_48 = init_49_arg_1 [L112] SORT_1 init_51_arg_1 = var_19; [L113] state_50 = init_51_arg_1 [L114] SORT_1 init_54_arg_1 = var_19; [L115] state_53 = init_54_arg_1 [L116] SORT_1 init_56_arg_1 = var_19; [L117] state_55 = init_56_arg_1 [L118] SORT_1 init_60_arg_1 = var_19; [L119] state_59 = init_60_arg_1 [L120] SORT_1 init_62_arg_1 = var_19; [L121] state_61 = init_62_arg_1 [L122] SORT_1 init_65_arg_1 = var_19; [L123] state_64 = init_65_arg_1 [L124] SORT_1 init_67_arg_1 = var_19; [L125] state_66 = init_67_arg_1 VAL [init_10_arg_1=0, init_21_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_37_arg_1=0, init_39_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_65_arg_1=0, init_67_arg_1=0, mask_SORT_1=1, mask_SORT_22=4294967295, mask_SORT_4=15, mask_SORT_7=31, msb_SORT_1=1, msb_SORT_22=2147483648, msb_SORT_4=8, msb_SORT_7=16, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_36=0, state_38=0, state_41=0, state_43=0, state_48=0, state_50=0, state_53=0, state_55=0, state_59=0, state_61=0, state_64=0, state_66=0, state_9=0, var_11=16, var_110=12, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_23=0, var_236=5, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_350=16, var_356=0, var_74=14, var_8=0, var_92=13] [L128] input_2 = __VERIFIER_nondet_uchar() [L129] input_3 = __VERIFIER_nondet_uchar() [L130] input_5 = __VERIFIER_nondet_uchar() [L131] input_6 = __VERIFIER_nondet_uchar() [L132] input_6 = input_6 & mask_SORT_1 [L133] input_345 = __VERIFIER_nondet_uchar() [L134] input_347 = __VERIFIER_nondet_uchar() [L135] input_386 = __VERIFIER_nondet_uchar() [L136] input_388 = __VERIFIER_nondet_uchar() [L137] input_404 = __VERIFIER_nondet_uchar() [L138] input_408 = __VERIFIER_nondet_uchar() [L141] SORT_7 var_12_arg_0 = state_9; [L142] SORT_7 var_12_arg_1 = var_11; [L143] SORT_1 var_12 = var_12_arg_0 <= var_12_arg_1; [L144] SORT_1 var_16_arg_0 = var_12; [L145] SORT_1 var_16 = ~var_16_arg_0; [L146] SORT_1 var_17_arg_0 = var_15; [L147] SORT_1 var_17_arg_1 = var_16; [L148] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L149] var_17 = var_17 & mask_SORT_1 [L150] SORT_1 bad_18_arg_0 = var_17; [L151] CALL __VERIFIER_assert(!(bad_18_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 14:05:52,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 b5fe367c9a890ae5613cb19b6f1be85d87bd259eb1f495691e3488afa1f5ae07 --- 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 14:05:54,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:05:54,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:05:54,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:05:54,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:05:54,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:05:54,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:05:54,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:05:54,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:05:54,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:05:54,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:05:54,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:05:54,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:05:54,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:05:54,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:05:54,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:05:54,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:05:54,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:05:54,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:05:54,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:05:54,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:05:54,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:05:54,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:05:54,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:05:54,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:05:54,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:05:54,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:05:54,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:05:54,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:05:54,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:05:54,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:05:54,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:05:54,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:05:54,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:05:54,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:05:54,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:05:54,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:05:54,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:05:54,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:05:54,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:05:54,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:05:54,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 14:05:54,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:05:54,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:05:54,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:05:54,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:05:54,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:05:54,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:05:54,814 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:05:54,814 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:05:54,814 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:05:54,814 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:05:54,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:05:54,814 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:05:54,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:05:54,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:05:54,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:05:54,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:05:54,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:05:54,815 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:05:54,815 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:05:54,815 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:05:54,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:05:54,815 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:05:54,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:05:54,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:05:54,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:05:54,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:05:54,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:05:54,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:05:54,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:05:54,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:05:54,816 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:05:54,817 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:05:54,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:05:54,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:05:54,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:05:54,817 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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5fe367c9a890ae5613cb19b6f1be85d87bd259eb1f495691e3488afa1f5ae07 [2022-12-14 14:05:55,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:05:55,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:05:55,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:05:55,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:05:55,070 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:05:55,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c [2022-12-14 14:05:57,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:05:57,890 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:05:57,891 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c [2022-12-14 14:05:57,905 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/data/f697c8b7f/52f64993b7df4f6f9b199364eef15b98/FLAGd30210c3c [2022-12-14 14:05:57,917 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/data/f697c8b7f/52f64993b7df4f6f9b199364eef15b98 [2022-12-14 14:05:57,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:05:57,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:05:57,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:05:57,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:05:57,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:05:57,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:05:57" (1/1) ... [2022-12-14 14:05:57,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10beb49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:57, skipping insertion in model container [2022-12-14 14:05:57,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:05:57" (1/1) ... [2022-12-14 14:05:57,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:05:57,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:05:58,128 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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c[1107,1120] [2022-12-14 14:05:58,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:05:58,331 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:05:58,339 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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_buf_bug.c[1107,1120] [2022-12-14 14:05:58,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:05:58,429 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:05:58,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58 WrapperNode [2022-12-14 14:05:58,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:05:58,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:05:58,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:05:58,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:05:58,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,524 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1878 [2022-12-14 14:05:58,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:05:58,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:05:58,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:05:58,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:05:58,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:05:58,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:05:58,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:05:58,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:05:58,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (1/1) ... [2022-12-14 14:05:58,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:05:58,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:05:58,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:05:58,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:05:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:05:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:05:58,987 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:05:58,989 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:06:00,757 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:06:00,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:06:00,762 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:06:00,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:06:00 BoogieIcfgContainer [2022-12-14 14:06:00,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:06:00,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:06:00,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:06:00,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:06:00,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:05:57" (1/3) ... [2022-12-14 14:06:00,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66aa26de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:06:00, skipping insertion in model container [2022-12-14 14:06:00,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:05:58" (2/3) ... [2022-12-14 14:06:00,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66aa26de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:06:00, skipping insertion in model container [2022-12-14 14:06:00,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:06:00" (3/3) ... [2022-12-14 14:06:00,770 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_buf_bug.c [2022-12-14 14:06:00,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:06:00,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:06:00,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:06:00,822 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;@21d7c08b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:06:00,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:06:00,825 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 14:06:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 14:06:00,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:06:00,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 14:06:00,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:06:00,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:06:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 14:06:00,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:06:00,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071074604] [2022-12-14 14:06:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:06:00,843 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 14:06:00,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:06:00,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 14:06:00,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 14:06:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:06:01,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 14:06:01,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:06:01,213 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 14:06:01,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:06:01,214 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:06:01,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071074604] [2022-12-14 14:06:01,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071074604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:06:01,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:06:01,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:06:01,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522746286] [2022-12-14 14:06:01,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:06:01,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:06:01,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:06:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:06:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:06:01,252 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 14:06:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:06:01,441 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 14:06:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:06:01,443 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 14:06:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:06:01,448 INFO L225 Difference]: With dead ends: 20 [2022-12-14 14:06:01,449 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 14:06:01,450 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 14:06:01,453 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:06:01,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:06:01,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 14:06:01,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 14:06:01,475 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 14:06:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 14:06:01,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 14:06:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:06:01,477 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 14:06:01,477 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 14:06:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 14:06:01,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:06:01,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:06:01,477 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 14:06:01,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 14:06:01,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 14:06:01,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:06:01,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:06:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 14:06:01,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:06:01,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857704075] [2022-12-14 14:06:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:06:01,692 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 14:06:01,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:06:01,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 14:06:01,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 14:06:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:06:02,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 131 conjunts are in the unsatisfiable core [2022-12-14 14:06:02,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:06:03,742 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 14:06:03,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:08:16,467 WARN L233 SmtUtils]: Spent 2.16m on a formula simplification. DAG size of input: 524 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:08:16,727 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 14:08:16,727 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:08:16,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857704075] [2022-12-14 14:08:16,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857704075] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:08:16,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2093752648] [2022-12-14 14:08:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:08:16,728 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:08:16,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:08:16,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:08:16,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 14:08:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:08:18,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 124 conjunts are in the unsatisfiable core [2022-12-14 14:08:18,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:08:18,698 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 14:08:18,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:09:23,613 WARN L233 SmtUtils]: Spent 59.13s on a formula simplification that was a NOOP. DAG size: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:09:23,911 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 14:09:23,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2093752648] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:09:23,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756891108] [2022-12-14 14:09:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:09:23,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:09:23,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:09:23,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:09:23,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:09:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:09:24,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 132 conjunts are in the unsatisfiable core [2022-12-14 14:09:24,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:09:25,108 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 14:09:25,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:11:39,033 WARN L233 SmtUtils]: Spent 2.06m on a formula simplification. DAG size of input: 482 DAG size of output: 470 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:12:26,882 WARN L233 SmtUtils]: Spent 43.49s on a formula simplification that was a NOOP. DAG size: 472 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:12:27,058 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 14:12:27,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756891108] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:12:27,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:12:27,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 13 [2022-12-14 14:12:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757756358] [2022-12-14 14:12:27,059 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:12:27,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 14:12:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:12:27,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 14:12:27,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=101, Unknown=8, NotChecked=0, Total=156 [2022-12-14 14:12:27,061 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 14:12:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:12:28,324 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 14:12:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:12:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 14:12:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:12:28,325 INFO L225 Difference]: With dead ends: 16 [2022-12-14 14:12:28,325 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 14:12:28,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 373.6s TimeCoverageRelationStatistics Valid=67, Invalid=135, Unknown=8, NotChecked=0, Total=210 [2022-12-14 14:12:28,326 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:12:28,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 14:12:28,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 14:12:28,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 14:12:28,329 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 14:12:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 14:12:28,330 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 14:12:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:12:28,330 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 14:12:28,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 14:12:28,331 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 14:12:28,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:12:28,331 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:12:28,331 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 14:12:28,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 14:12:28,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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)] Ended with exit code 0 [2022-12-14 14:12:28,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:12:28,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:12:28,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:12:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:12:28,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 14:12:28,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:12:28,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140435289] [2022-12-14 14:12:28,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:12:28,941 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 14:12:28,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:12:28,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 14:12:28,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00331b-d97b-4550-8052-fe1f1af0f9b7/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 14:12:30,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:12:30,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:12:30,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 3444 conjuncts, 443 conjunts are in the unsatisfiable core [2022-12-14 14:12:30,101 INFO L286 TraceCheckSpWp]: Computing forward predicates...