./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.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_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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_1bf1f709-5d98-485a-8adf-a77eca375eca/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 361ad7309330d0980d27cf62f0ef032c1e20901880e67356d6799ee9da9467a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:48:07,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:48:07,759 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:48:07,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:48:07,770 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:48:07,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:48:07,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:48:07,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:48:07,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:48:07,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:48:07,821 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:48:07,821 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:48:07,822 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:48:07,823 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:48:07,824 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:48:07,824 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:48:07,825 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:48:07,825 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:48:07,825 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:48:07,826 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:48:07,827 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:48:07,828 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:48:07,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:48:07,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:48:07,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:48:07,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:48:07,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:48:07,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:48:07,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:48:07,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:48:07,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:48:07,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:48:07,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:48:07,833 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:48:07,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:48:07,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:48:07,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:07,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:48:07,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:48:07,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:48:07,835 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:48:07,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:48:07,836 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:48:07,836 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:48:07,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:48:07,837 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_1bf1f709-5d98-485a-8adf-a77eca375eca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 361ad7309330d0980d27cf62f0ef032c1e20901880e67356d6799ee9da9467a8 [2023-11-19 04:48:08,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:48:08,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:48:08,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:48:08,197 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:48:08,198 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:48:08,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i [2023-11-19 04:48:11,195 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:48:11,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:48:11,496 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i [2023-11-19 04:48:11,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/data/dbb6ab1c1/7cebf237b3b54cdda700f3267a90a39f/FLAG8e7d84fb8 [2023-11-19 04:48:11,523 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/data/dbb6ab1c1/7cebf237b3b54cdda700f3267a90a39f [2023-11-19 04:48:11,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:48:11,531 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:48:11,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:11,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:48:11,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:48:11,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38085923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11, skipping insertion in model container [2023-11-19 04:48:11,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:48:11,775 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_1bf1f709-5d98-485a-8adf-a77eca375eca/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i[915,928] [2023-11-19 04:48:11,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:11,832 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:48:11,845 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_1bf1f709-5d98-485a-8adf-a77eca375eca/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i[915,928] [2023-11-19 04:48:11,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:11,888 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:48:11,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11 WrapperNode [2023-11-19 04:48:11,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:11,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:11,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:48:11,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:48:11,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,946 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-11-19 04:48:11,946 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:11,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:48:11,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:48:11,947 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:48:11,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,980 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:11,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:12,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:12,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:48:12,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:48:12,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:48:12,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:48:12,024 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (1/1) ... [2023-11-19 04:48:12,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:12,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:48:12,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:48:12,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:48:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:48:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:48:12,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:48:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:48:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:48:12,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:48:12,217 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:48:12,220 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:48:12,661 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:48:12,934 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:48:12,934 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:48:12,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:12 BoogieIcfgContainer [2023-11-19 04:48:12,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:48:12,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:48:12,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:48:12,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:48:12,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:48:11" (1/3) ... [2023-11-19 04:48:12,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9f3644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:12, skipping insertion in model container [2023-11-19 04:48:12,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:11" (2/3) ... [2023-11-19 04:48:12,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9f3644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:12, skipping insertion in model container [2023-11-19 04:48:12,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:12" (3/3) ... [2023-11-19 04:48:12,953 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-61.i [2023-11-19 04:48:12,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:48:12,972 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:48:13,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:48:13,027 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;@51b2ef46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:48:13,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:48:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 04:48:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 04:48:13,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:13,041 INFO L195 NwaCegarLoop]: trace histogram [12, 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 04:48:13,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:48:13,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash 183663600, now seen corresponding path program 1 times [2023-11-19 04:48:13,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:48:13,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025694316] [2023-11-19 04:48:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:13,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:48:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:48:13,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:48:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:48:13,567 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:48:13,569 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:48:13,570 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:48:13,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:48:13,577 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:48:13,581 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:48:13,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:48:13 BoogieIcfgContainer [2023-11-19 04:48:13,652 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:48:13,652 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:48:13,652 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:48:13,653 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:48:13,653 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:12" (3/4) ... [2023-11-19 04:48:13,655 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:48:13,656 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:48:13,658 INFO L158 Benchmark]: Toolchain (without parser) took 2126.56ms. Allocated memory is still 155.2MB. Free memory was 113.0MB in the beginning and 81.5MB in the end (delta: 31.5MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2023-11-19 04:48:13,658 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:48:13,659 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.99ms. Allocated memory is still 155.2MB. Free memory was 113.0MB in the beginning and 100.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:48:13,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.95ms. Allocated memory is still 155.2MB. Free memory was 100.4MB in the beginning and 97.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:48:13,660 INFO L158 Benchmark]: Boogie Preprocessor took 66.02ms. Allocated memory is still 155.2MB. Free memory was 97.3MB in the beginning and 95.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:48:13,661 INFO L158 Benchmark]: RCFGBuilder took 928.05ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 121.3MB in the end (delta: -25.7MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2023-11-19 04:48:13,662 INFO L158 Benchmark]: TraceAbstraction took 707.54ms. Allocated memory is still 155.2MB. Free memory was 120.2MB in the beginning and 82.5MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-19 04:48:13,662 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 81.5MB in the end (delta: 960.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:48:13,666 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.99ms. Allocated memory is still 155.2MB. Free memory was 113.0MB in the beginning and 100.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.95ms. Allocated memory is still 155.2MB. Free memory was 100.4MB in the beginning and 97.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.02ms. Allocated memory is still 155.2MB. Free memory was 97.3MB in the beginning and 95.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 928.05ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 121.3MB in the end (delta: -25.7MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * TraceAbstraction took 707.54ms. Allocated memory is still 155.2MB. Free memory was 120.2MB in the beginning and 82.5MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 155.2MB. Free memory was 82.5MB in the beginning and 81.5MB in the end (delta: 960.5kB). 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 35, overapproximation of shiftLeft at line 53. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 0; [L23] float var_1_2 = 128.6; [L24] float var_1_3 = 49.4; [L25] unsigned char var_1_4 = 0; [L26] unsigned char var_1_5 = 0; [L27] unsigned char var_1_6 = 0; [L28] unsigned char var_1_7 = 8; [L29] unsigned char var_1_8 = 128; [L30] unsigned char var_1_9 = 64; [L31] signed short int var_1_10 = 5; [L88] isInitial = 1 [L89] FCALL initially() [L90] COND TRUE 1 [L91] FCALL updateLastVariables() [L92] CALL updateVariables() [L61] var_1_2 = __VERIFIER_nondet_float() [L62] 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=5, var_1_1=0, var_1_3=247/5, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L20] COND FALSE !(!cond) [L62] 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=5, var_1_1=0, var_1_3=247/5, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L63] var_1_3 = __VERIFIER_nondet_float() [L64] 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=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L20] COND FALSE !(!cond) [L64] 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=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L65] var_1_4 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L67] CALL assume_abort_if_not(var_1_4 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_4 <= 0) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L68] var_1_5 = __VERIFIER_nondet_uchar() [L69] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L70] CALL assume_abort_if_not(var_1_5 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_5 <= 0) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=8, var_1_8=128, var_1_9=64] [L71] var_1_6 = __VERIFIER_nondet_uchar() [L72] CALL assume_abort_if_not(var_1_6 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=128, var_1_9=64] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_6 >= 1) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=128, var_1_9=64] [L73] CALL assume_abort_if_not(var_1_6 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=128, var_1_9=64] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_6 <= 1) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=128, var_1_9=64] [L74] var_1_8 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_8 >= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=127, var_1_9=64] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_8 >= 127) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=127, var_1_9=64] [L76] CALL assume_abort_if_not(var_1_8 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=127, var_1_9=64] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_8 <= 254) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=127, var_1_9=64] [L77] var_1_9 = __VERIFIER_nondet_uchar() [L78] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=127, var_1_9=127] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=127, var_1_9=127] [L79] CALL assume_abort_if_not(var_1_9 <= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=127, var_1_9=127] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_9 <= 127) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=8, var_1_8=127, var_1_9=127] [L92] RET updateVariables() [L93] CALL step() [L35] COND TRUE var_1_2 < var_1_3 [L36] var_1_1 = (var_1_4 || var_1_5) [L44] COND TRUE \read(var_1_6) [L45] COND FALSE !(var_1_3 != 15.8f) [L48] var_1_7 = ((((var_1_8) > (var_1_9)) ? (var_1_8) : (var_1_9))) [L53] EXPR (var_1_9 / 32) << var_1_8 [L53] signed long int stepLocal_0 = (var_1_9 / 32) << var_1_8; [L54] COND TRUE ! (var_1_3 < var_1_2) [L55] COND TRUE stepLocal_0 == var_1_7 [L56] var_1_10 = (var_1_7 - var_1_8) [L93] RET step() [L94] CALL, EXPR property() [L84] EXPR (((var_1_2 < var_1_3) ? (var_1_1 == ((unsigned char) (var_1_4 || var_1_5))) : ((var_1_3 >= var_1_2) ? (var_1_1 == ((unsigned char) var_1_5)) : (var_1_1 == ((unsigned char) var_1_6)))) && (var_1_6 ? ((var_1_3 != 15.8f) ? (var_1_7 == ((unsigned char) (var_1_8 - var_1_9))) : (var_1_7 == ((unsigned char) ((((var_1_8) > (var_1_9)) ? (var_1_8) : (var_1_9)))))) : (var_1_7 == ((unsigned char) var_1_8)))) && ((! (var_1_3 < var_1_2)) ? ((((var_1_9 / 32) << var_1_8) == var_1_7) ? (var_1_10 == ((signed short int) (var_1_7 - var_1_8))) : 1) : 1) [L84-L85] return (((var_1_2 < var_1_3) ? (var_1_1 == ((unsigned char) (var_1_4 || var_1_5))) : ((var_1_3 >= var_1_2) ? (var_1_1 == ((unsigned char) var_1_5)) : (var_1_1 == ((unsigned char) var_1_6)))) && (var_1_6 ? ((var_1_3 != 15.8f) ? (var_1_7 == ((unsigned char) (var_1_8 - var_1_9))) : (var_1_7 == ((unsigned char) ((((var_1_8) > (var_1_9)) ? (var_1_8) : (var_1_9)))))) : (var_1_7 == ((unsigned char) var_1_8)))) && ((! (var_1_3 < var_1_2)) ? ((((var_1_9 / 32) << var_1_8) == var_1_7) ? (var_1_10 == ((signed short int) (var_1_7 - var_1_8))) : 1) : 1) ; [L94] RET, EXPR property() [L94] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=0, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=127, var_1_8=127, var_1_9=127] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=0, var_1_1=0, var_1_3=517, var_1_4=0, var_1_5=0, var_1_6=1, var_1_7=127, var_1_8=127, var_1_9=127] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 12, 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=28occurred 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, 47 NumberOfCodeBlocks, 47 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 04:48:13,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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_1bf1f709-5d98-485a-8adf-a77eca375eca/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 361ad7309330d0980d27cf62f0ef032c1e20901880e67356d6799ee9da9467a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:48:16,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:48:16,568 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:48:16,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:48:16,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:48:16,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:48:16,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:48:16,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:48:16,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:48:16,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:48:16,637 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:48:16,637 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:48:16,638 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:48:16,640 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:48:16,640 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:48:16,641 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:48:16,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:48:16,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:48:16,643 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:48:16,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:48:16,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:48:16,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:48:16,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:48:16,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:48:16,646 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:48:16,647 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:48:16,647 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:48:16,648 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:48:16,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:48:16,649 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:48:16,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:48:16,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:48:16,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:48:16,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:16,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:48:16,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:48:16,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:48:16,652 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:48:16,653 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:48:16,654 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:48:16,654 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:48:16,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:48:16,655 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_1bf1f709-5d98-485a-8adf-a77eca375eca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 361ad7309330d0980d27cf62f0ef032c1e20901880e67356d6799ee9da9467a8 [2023-11-19 04:48:17,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:48:17,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:48:17,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:48:17,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:48:17,105 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:48:17,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i [2023-11-19 04:48:20,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:48:20,501 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:48:20,502 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i [2023-11-19 04:48:20,513 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/data/8ac041bde/89e3c6fc020441108ca2a5ec6d605c81/FLAG807b05c9b [2023-11-19 04:48:20,538 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/data/8ac041bde/89e3c6fc020441108ca2a5ec6d605c81 [2023-11-19 04:48:20,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:48:20,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:48:20,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:20,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:48:20,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:48:20,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:20,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4534846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20, skipping insertion in model container [2023-11-19 04:48:20,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:20,602 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:48:20,792 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_1bf1f709-5d98-485a-8adf-a77eca375eca/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i[915,928] [2023-11-19 04:48:20,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:20,877 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:48:20,895 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_1bf1f709-5d98-485a-8adf-a77eca375eca/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-61.i[915,928] [2023-11-19 04:48:20,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:20,956 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:48:20,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20 WrapperNode [2023-11-19 04:48:20,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:20,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:20,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:48:20,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:48:20,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:20,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,030 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2023-11-19 04:48:21,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:21,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:48:21,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:48:21,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:48:21,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:48:21,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:48:21,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:48:21,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:48:21,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (1/1) ... [2023-11-19 04:48:21,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:48:21,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:48:21,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:48:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:48:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:48:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:48:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:48:21,272 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:48:21,275 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:48:21,638 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:48:21,657 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:48:21,657 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:48:21,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:21 BoogieIcfgContainer [2023-11-19 04:48:21,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:48:21,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:48:21,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:48:21,671 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:48:21,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:48:20" (1/3) ... [2023-11-19 04:48:21,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414a6869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:21, skipping insertion in model container [2023-11-19 04:48:21,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:20" (2/3) ... [2023-11-19 04:48:21,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414a6869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:21, skipping insertion in model container [2023-11-19 04:48:21,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:21" (3/3) ... [2023-11-19 04:48:21,676 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-61.i [2023-11-19 04:48:21,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:48:21,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:48:21,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:48:21,772 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;@6ac142a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:48:21,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:48:21,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 04:48:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 04:48:21,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:21,792 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 04:48:21,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:48:21,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:21,804 INFO L85 PathProgramCache]: Analyzing trace with hash -816836340, now seen corresponding path program 1 times [2023-11-19 04:48:21,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:48:21,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810601794] [2023-11-19 04:48:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:21,823 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 04:48:21,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:48:21,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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 04:48:21,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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 04:48:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:48:22,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:48:22,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:48:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-19 04:48:22,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:48:22,199 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:48:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810601794] [2023-11-19 04:48:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810601794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:48:22,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:48:22,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:48:22,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210175418] [2023-11-19 04:48:22,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:48:22,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:48:22,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:48:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:48:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:48:22,265 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 04:48:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:48:22,336 INFO L93 Difference]: Finished difference Result 83 states and 136 transitions. [2023-11-19 04:48:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:48:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2023-11-19 04:48:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:48:22,351 INFO L225 Difference]: With dead ends: 83 [2023-11-19 04:48:22,351 INFO L226 Difference]: Without dead ends: 41 [2023-11-19 04:48:22,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 79 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 04:48:22,363 INFO L413 NwaCegarLoop]: 58 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, 58 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 04:48:22,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:48:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-19 04:48:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-19 04:48:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 04:48:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2023-11-19 04:48:22,421 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 80 [2023-11-19 04:48:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:48:22,422 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2023-11-19 04:48:22,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 04:48:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2023-11-19 04:48:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 04:48:22,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:22,430 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 04:48:22,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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)] Ended with exit code 0 [2023-11-19 04:48:22,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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 04:48:22,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:48:22,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:22,642 INFO L85 PathProgramCache]: Analyzing trace with hash -673886896, now seen corresponding path program 1 times [2023-11-19 04:48:22,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:48:22,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22372880] [2023-11-19 04:48:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:22,643 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 04:48:22,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:48:22,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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 04:48:22,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/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 04:48:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:48:22,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:48:22,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:48:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-19 04:48:23,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:48:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-19 04:48:23,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:48:23,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22372880] [2023-11-19 04:48:23,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22372880] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:48:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [282195653] [2023-11-19 04:48:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:23,294 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:48:23,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:48:23,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:48:23,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 04:48:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:48:23,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:48:23,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:48:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-19 04:48:23,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:48:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-19 04:48:24,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [282195653] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:48:24,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620836027] [2023-11-19 04:48:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:24,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:48:24,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:48:24,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:48:24,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bf1f709-5d98-485a-8adf-a77eca375eca/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:48:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:48:24,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:48:24,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:48:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-19 04:48:24,690 INFO L327 TraceCheckSpWp]: Computing backward predicates...