./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92c32feee421c48ab58fbc8ff43c274cf7615d37c71b93492a69b21460f6fabb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:06:44,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:06:44,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:06:44,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:06:44,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:06:44,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:06:44,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:06:44,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:06:44,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:06:44,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:06:44,499 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:06:44,500 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:06:44,500 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:06:44,501 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:06:44,502 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:06:44,502 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:06:44,503 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:06:44,504 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:06:44,504 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:06:44,505 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:06:44,506 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:06:44,507 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:06:44,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:06:44,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:06:44,509 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:06:44,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:06:44,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:06:44,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:06:44,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:06:44,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:06:44,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:06:44,537 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:06:44,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:06:44,538 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:06:44,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:06:44,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:06:44,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:44,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:06:44,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:06:44,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:06:44,540 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:06:44,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:06:44,540 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:06:44,541 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:06:44,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:06:44,541 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92c32feee421c48ab58fbc8ff43c274cf7615d37c71b93492a69b21460f6fabb [2023-11-19 05:06:44,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:06:44,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:06:44,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:06:44,913 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:06:44,914 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:06:44,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i [2023-11-19 05:06:48,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:06:48,366 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:06:48,366 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i [2023-11-19 05:06:48,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/data/2d5037fdc/4ebe5f980bc04edc81956ae4b4f774fe/FLAG2840e0c48 [2023-11-19 05:06:48,391 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/data/2d5037fdc/4ebe5f980bc04edc81956ae4b4f774fe [2023-11-19 05:06:48,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:06:48,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:06:48,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:48,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:06:48,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:06:48,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bdd323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48, skipping insertion in model container [2023-11-19 05:06:48,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:06:48,618 WARN L240 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_f725b2e9-02f1-435c-a987-4f8622b762e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i[915,928] [2023-11-19 05:06:48,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:48,684 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:06:48,697 WARN L240 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_f725b2e9-02f1-435c-a987-4f8622b762e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i[915,928] [2023-11-19 05:06:48,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:48,750 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:06:48,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48 WrapperNode [2023-11-19 05:06:48,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:48,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:48,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:06:48,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:06:48,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,839 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2023-11-19 05:06:48,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:48,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:06:48,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:06:48,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:06:48,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:06:48,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:06:48,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:06:48,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:06:48,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (1/1) ... [2023-11-19 05:06:48,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:48,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:48,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:06:48,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:06:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:06:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:06:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:06:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:06:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:06:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:06:49,113 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:06:49,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:06:49,584 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:06:49,740 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:06:49,740 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:06:49,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:49 BoogieIcfgContainer [2023-11-19 05:06:49,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:06:49,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:06:49,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:06:49,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:06:49,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:06:48" (1/3) ... [2023-11-19 05:06:49,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6338d9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:49, skipping insertion in model container [2023-11-19 05:06:49,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:48" (2/3) ... [2023-11-19 05:06:49,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6338d9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:49, skipping insertion in model container [2023-11-19 05:06:49,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:49" (3/3) ... [2023-11-19 05:06:49,760 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-49.i [2023-11-19 05:06:49,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:06:49,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:06:49,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:06:49,913 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=LoopHeads, 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;@7d3cede, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:06:49,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:06:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 05:06:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 05:06:49,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:49,930 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:49,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:49,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1368554564, now seen corresponding path program 1 times [2023-11-19 05:06:49,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:49,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143078642] [2023-11-19 05:06:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:49,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:06:50,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:06:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:06:50,630 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:06:50,633 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:06:50,634 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:06:50,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:06:50,641 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:06:50,646 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:06:50,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:06:50 BoogieIcfgContainer [2023-11-19 05:06:50,729 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:06:50,730 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:06:50,730 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:06:50,730 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:06:50,731 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:49" (3/4) ... [2023-11-19 05:06:50,733 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:06:50,734 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:06:50,735 INFO L158 Benchmark]: Toolchain (without parser) took 2338.80ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 65.5MB in the beginning and 107.8MB in the end (delta: -42.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:06:50,735 INFO L158 Benchmark]: CDTParser took 1.01ms. Allocated memory is still 132.1MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:06:50,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.75ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 65.2MB in the beginning and 157.7MB in the end (delta: -92.4MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-11-19 05:06:50,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.07ms. Allocated memory is still 195.0MB. Free memory was 156.8MB in the beginning and 153.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:06:50,738 INFO L158 Benchmark]: Boogie Preprocessor took 61.74ms. Allocated memory is still 195.0MB. Free memory was 153.5MB in the beginning and 151.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:06:50,738 INFO L158 Benchmark]: RCFGBuilder took 842.17ms. Allocated memory is still 195.0MB. Free memory was 151.4MB in the beginning and 146.6MB in the end (delta: 4.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:06:50,739 INFO L158 Benchmark]: TraceAbstraction took 978.74ms. Allocated memory is still 195.0MB. Free memory was 145.5MB in the beginning and 107.8MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-19 05:06:50,740 INFO L158 Benchmark]: Witness Printer took 4.04ms. Allocated memory is still 195.0MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:06:50,744 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01ms. Allocated memory is still 132.1MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.75ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 65.2MB in the beginning and 157.7MB in the end (delta: -92.4MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.07ms. Allocated memory is still 195.0MB. Free memory was 156.8MB in the beginning and 153.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.74ms. Allocated memory is still 195.0MB. Free memory was 153.5MB in the beginning and 151.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 842.17ms. Allocated memory is still 195.0MB. Free memory was 151.4MB in the beginning and 146.6MB in the end (delta: 4.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 978.74ms. Allocated memory is still 195.0MB. Free memory was 145.5MB in the beginning and 107.8MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 4.04ms. Allocated memory is still 195.0MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 41, overapproximation of shiftRight at line 55. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 4; [L23] float var_1_2 = 1000000000000000.4; [L24] float var_1_3 = 1000.2; [L25] unsigned short int var_1_4 = 256; [L26] unsigned short int var_1_5 = 4; [L27] unsigned short int var_1_6 = 10; [L28] signed short int var_1_8 = 128; [L29] unsigned char var_1_10 = 0; [L30] unsigned char var_1_11 = 0; [L31] unsigned char var_1_12 = 0; [L32] unsigned char var_1_13 = 1; [L33] unsigned char var_1_14 = 0; [L34] signed char var_1_15 = -1; [L35] signed char var_1_16 = 0; [L95] isInitial = 1 [L96] FCALL initially() [L97] int k_loop; [L98] k_loop = 0 VAL [isInitial=1, k_loop=0, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_2=5000000000000002/5, var_1_3=5001/5, var_1_4=256, var_1_5=4, var_1_6=10, var_1_8=128] [L98] COND TRUE k_loop < 1 [L99] FCALL updateLastVariables() [L100] CALL updateVariables() [L62] var_1_2 = __VERIFIER_nondet_float() [L63] CALL assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=5001/5, var_1_4=256, var_1_5=4, var_1_6=10, var_1_8=128] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=5001/5, var_1_4=256, var_1_5=4, var_1_6=10, var_1_8=128] [L64] var_1_3 = __VERIFIER_nondet_float() [L65] CALL assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=256, var_1_5=4, var_1_6=10, var_1_8=128] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=256, var_1_5=4, var_1_6=10, var_1_8=128] [L66] var_1_4 = __VERIFIER_nondet_ushort() [L67] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=4, var_1_6=10, var_1_8=128] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=4, var_1_6=10, var_1_8=128] [L68] CALL assume_abort_if_not(var_1_4 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=4, var_1_6=10, var_1_8=128] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_4 <= 65534) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=4, var_1_6=10, var_1_8=128] [L69] var_1_5 = __VERIFIER_nondet_ushort() [L70] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=10, var_1_8=128] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=10, var_1_8=128] [L71] CALL assume_abort_if_not(var_1_5 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=10, var_1_8=128] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_5 <= 65534) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=10, var_1_8=128] [L72] var_1_6 = __VERIFIER_nondet_ushort() [L73] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L74] CALL assume_abort_if_not(var_1_6 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_6 <= 65534) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L75] var_1_11 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L77] CALL assume_abort_if_not(var_1_11 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_11 <= 0) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L78] var_1_12 = __VERIFIER_nondet_uchar() [L79] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L80] CALL assume_abort_if_not(var_1_12 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_12 <= 0) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=0, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L81] var_1_14 = __VERIFIER_nondet_uchar() [L82] CALL assume_abort_if_not(var_1_14 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_14 >= 1) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L83] CALL assume_abort_if_not(var_1_14 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(var_1_14 <= 1) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=-1, var_1_16=0, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L84] var_1_16 = __VERIFIER_nondet_char() [L85] CALL assume_abort_if_not(var_1_16 >= -127) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=-1, var_1_16=47, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_16 >= -127) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=-1, var_1_16=47, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L86] CALL assume_abort_if_not(var_1_16 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=-1, var_1_16=47, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_16 <= 126) VAL [isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=-1, var_1_16=47, var_1_1=4, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=128] [L100] RET updateVariables() [L101] CALL step() [L39] var_1_13 = var_1_14 [L40] var_1_15 = var_1_16 [L41] COND FALSE !(var_1_2 >= 64.5f) [L52] var_1_1 = 50 [L54] var_1_8 = ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))) [L55] EXPR 50 >> var_1_4 [L55] COND TRUE (50 >> var_1_4) <= var_1_8 [L56] var_1_10 = ((! (! var_1_11)) || var_1_12) [L101] RET step() [L102] CALL, EXPR property() [L91] EXPR (((var_1_2 >= 64.5f) ? ((var_1_2 >= var_1_3) ? (var_1_1 == ((unsigned short int) (((((((var_1_4) > (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6))))) ? (var_1_4) : (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6)))))) < 0 ) ? -((((var_1_4) > (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6))))) ? (var_1_4) : (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6)))))) : ((((var_1_4) > (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6))))) ? (var_1_4) : (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6)))))))))) : (var_1_13 ? (var_1_1 == ((unsigned short int) var_1_5)) : (var_1_1 == ((unsigned short int) var_1_6)))) : (var_1_1 == ((unsigned short int) 50))) && (var_1_8 == ((signed short int) ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15)))))) && (((50 >> var_1_4) <= var_1_8) ? (var_1_10 == ((unsigned char) ((! (! var_1_11)) || var_1_12))) : (var_1_10 == ((unsigned char) (! var_1_11)))) [L91] EXPR 50 >> var_1_4 [L91] EXPR (((var_1_2 >= 64.5f) ? ((var_1_2 >= var_1_3) ? (var_1_1 == ((unsigned short int) (((((((var_1_4) > (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6))))) ? (var_1_4) : (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6)))))) < 0 ) ? -((((var_1_4) > (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6))))) ? (var_1_4) : (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6)))))) : ((((var_1_4) > (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6))))) ? (var_1_4) : (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6)))))))))) : (var_1_13 ? (var_1_1 == ((unsigned short int) var_1_5)) : (var_1_1 == ((unsigned short int) var_1_6)))) : (var_1_1 == ((unsigned short int) 50))) && (var_1_8 == ((signed short int) ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15)))))) && (((50 >> var_1_4) <= var_1_8) ? (var_1_10 == ((unsigned char) ((! (! var_1_11)) || var_1_12))) : (var_1_10 == ((unsigned char) (! var_1_11)))) [L91-L92] return (((((var_1_2 >= 64.5f) ? ((var_1_2 >= var_1_3) ? (var_1_1 == ((unsigned short int) (((((((var_1_4) > (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6))))) ? (var_1_4) : (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6)))))) < 0 ) ? -((((var_1_4) > (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6))))) ? (var_1_4) : (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6)))))) : ((((var_1_4) > (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6))))) ? (var_1_4) : (((((var_1_5) > (var_1_6)) ? (var_1_5) : (var_1_6)))))))))) : (var_1_13 ? (var_1_1 == ((unsigned short int) var_1_5)) : (var_1_1 == ((unsigned short int) var_1_6)))) : (var_1_1 == ((unsigned short int) 50))) && (var_1_8 == ((signed short int) ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15)))))) && (((50 >> var_1_4) <= var_1_8) ? (var_1_10 == ((unsigned char) ((! (! var_1_11)) || var_1_12))) : (var_1_10 == ((unsigned char) (! var_1_11))))) && (var_1_13 == ((unsigned char) var_1_14))) && (var_1_15 == ((signed char) var_1_16)) ; [L102] RET, EXPR property() [L102] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=47, var_1_16=47, var_1_1=50, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=47] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=1, var_1_14=1, var_1_15=47, var_1_16=47, var_1_1=50, var_1_3=1000000000000005, var_1_4=51, var_1_5=50, var_1_6=4, var_1_8=47] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 16, 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=34occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 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 [2023-11-19 05:06:50,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/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_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92c32feee421c48ab58fbc8ff43c274cf7615d37c71b93492a69b21460f6fabb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:06:53,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:06:53,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:06:53,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:06:53,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:06:53,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:06:53,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:06:53,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:06:53,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:06:53,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:06:53,589 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:06:53,589 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:06:53,590 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:06:53,591 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:06:53,592 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:06:53,592 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:06:53,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:06:53,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:06:53,594 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:06:53,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:06:53,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:06:53,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:06:53,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:06:53,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:06:53,598 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:06:53,598 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:06:53,598 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:06:53,599 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:06:53,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:06:53,600 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:06:53,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:06:53,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:06:53,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:06:53,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:53,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:06:53,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:06:53,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:06:53,603 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:06:53,603 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:06:53,604 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:06:53,605 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:06:53,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:06:53,605 INFO L153 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_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92c32feee421c48ab58fbc8ff43c274cf7615d37c71b93492a69b21460f6fabb [2023-11-19 05:06:54,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:06:54,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:06:54,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:06:54,124 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:06:54,125 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:06:54,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i [2023-11-19 05:06:57,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:06:57,521 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:06:57,521 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i [2023-11-19 05:06:57,530 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/data/579867846/fff28a92bbdb4bfb9fadff7e8b4dcf53/FLAG8835e20d1 [2023-11-19 05:06:57,546 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/data/579867846/fff28a92bbdb4bfb9fadff7e8b4dcf53 [2023-11-19 05:06:57,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:06:57,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:06:57,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:57,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:06:57,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:06:57,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:57,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61840916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57, skipping insertion in model container [2023-11-19 05:06:57,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:57,588 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:06:57,739 WARN L240 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_f725b2e9-02f1-435c-a987-4f8622b762e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i[915,928] [2023-11-19 05:06:57,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:57,816 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:06:57,833 WARN L240 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_f725b2e9-02f1-435c-a987-4f8622b762e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-49.i[915,928] [2023-11-19 05:06:57,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:57,956 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:06:57,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57 WrapperNode [2023-11-19 05:06:57,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:57,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:57,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:06:57,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:06:57,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:57,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,024 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 109 [2023-11-19 05:06:58,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:58,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:06:58,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:06:58,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:06:58,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:06:58,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:06:58,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:06:58,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:06:58,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (1/1) ... [2023-11-19 05:06:58,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:58,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:06:58,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:06:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:06:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:06:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:06:58,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:06:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:06:58,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:06:58,324 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:06:58,327 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:06:58,696 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:06:58,704 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:06:58,704 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:06:58,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:58 BoogieIcfgContainer [2023-11-19 05:06:58,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:06:58,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:06:58,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:06:58,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:06:58,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:06:57" (1/3) ... [2023-11-19 05:06:58,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b2fbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:58, skipping insertion in model container [2023-11-19 05:06:58,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:57" (2/3) ... [2023-11-19 05:06:58,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b2fbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:58, skipping insertion in model container [2023-11-19 05:06:58,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:58" (3/3) ... [2023-11-19 05:06:58,718 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-49.i [2023-11-19 05:06:58,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:06:58,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:06:58,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:06:58,795 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=LoopHeads, 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;@1aab5631, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:06:58,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:06:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 05:06:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 05:06:58,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:58,817 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:58,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:58,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:58,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2117865659, now seen corresponding path program 1 times [2023-11-19 05:06:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:06:58,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209811355] [2023-11-19 05:06:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:58,851 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 [2023-11-19 05:06:58,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:06:58,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:06:58,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:06:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:59,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:06:59,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:06:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-11-19 05:06:59,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:06:59,237 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:06:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209811355] [2023-11-19 05:06:59,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209811355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:59,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:59,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:06:59,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825514861] [2023-11-19 05:06:59,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:06:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:06:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:06:59,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:06:59,293 INFO L87 Difference]: Start difference. First operand has 50 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 05:06:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:59,353 INFO L93 Difference]: Finished difference Result 97 states and 157 transitions. [2023-11-19 05:06:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:06:59,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 101 [2023-11-19 05:06:59,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:59,368 INFO L225 Difference]: With dead ends: 97 [2023-11-19 05:06:59,368 INFO L226 Difference]: Without dead ends: 46 [2023-11-19 05:06:59,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:06:59,383 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:59,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:06:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-19 05:06:59,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-19 05:06:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 05:06:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2023-11-19 05:06:59,450 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 101 [2023-11-19 05:06:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:59,451 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2023-11-19 05:06:59,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 05:06:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2023-11-19 05:06:59,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 05:06:59,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:59,461 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:59,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:06:59,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:06:59,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:59,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash -357261577, now seen corresponding path program 1 times [2023-11-19 05:06:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:06:59,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84878180] [2023-11-19 05:06:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:59,665 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 [2023-11-19 05:06:59,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:06:59,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:06:59,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f725b2e9-02f1-435c-a987-4f8622b762e8/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:06:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:59,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:06:59,922 INFO L285 TraceCheckSpWp]: Computing forward predicates...