./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91 --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 5b933671a1fface527dbef89f2ee599c80d54d1c8c988a3b741df55fc4b83921 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:03:40,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:03:40,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:03:40,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:03:40,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:03:40,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:03:40,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:03:40,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:03:40,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:03:40,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:03:40,935 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:03:40,935 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:03:40,936 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:03:40,936 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:03:40,937 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:03:40,937 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:03:40,938 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:03:40,939 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:03:40,939 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:03:40,940 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:03:40,941 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:03:40,941 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:03:40,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:03:40,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:03:40,943 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:03:40,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:03:40,944 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:03:40,944 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:03:40,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:03:40,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:03:40,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:03:40,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:03:40,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:03:40,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:03:40,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:03:40,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:03:40,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:03:40,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:40,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:03:40,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:03:40,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:03:40,951 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:03:40,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:03:40,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:03:40,952 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:03:40,953 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:03:40,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:03:40,953 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_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b933671a1fface527dbef89f2ee599c80d54d1c8c988a3b741df55fc4b83921 [2023-11-25 00:03:41,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:03:41,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:03:41,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:03:41,266 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:03:41,266 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:03:41,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i [2023-11-25 00:03:44,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:03:44,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:03:44,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i [2023-11-25 00:03:44,726 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/data/4159d2c2c/6042ddfdb8f341d5a51e212606a4c60b/FLAGf694fd02e [2023-11-25 00:03:44,745 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/data/4159d2c2c/6042ddfdb8f341d5a51e212606a4c60b [2023-11-25 00:03:44,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:03:44,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:03:44,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:44,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:03:44,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:03:44,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:44" (1/1) ... [2023-11-25 00:03:44,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f598501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:44, skipping insertion in model container [2023-11-25 00:03:44,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:44" (1/1) ... [2023-11-25 00:03:44,819 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:03:45,010 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_e94ad60f-775e-4317-b45a-59ae5d3c7846/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i[915,928] [2023-11-25 00:03:45,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:45,064 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:03:45,077 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_e94ad60f-775e-4317-b45a-59ae5d3c7846/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i[915,928] [2023-11-25 00:03:45,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:45,116 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:03:45,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45 WrapperNode [2023-11-25 00:03:45,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:45,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:45,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:03:45,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:03:45,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,162 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2023-11-25 00:03:45,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:45,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:03:45,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:03:45,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:03:45,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:03:45,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:03:45,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:03:45,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:03:45,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (1/1) ... [2023-11-25 00:03:45,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:45,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:45,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:03:45,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:03:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:03:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:03:45,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:03:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:03:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:03:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:03:45,412 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:03:45,414 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:03:45,665 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:03:45,850 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:03:45,850 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:03:45,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:45 BoogieIcfgContainer [2023-11-25 00:03:45,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:03:45,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:03:45,856 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:03:45,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:03:45,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:03:44" (1/3) ... [2023-11-25 00:03:45,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54046ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:45, skipping insertion in model container [2023-11-25 00:03:45,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:45" (2/3) ... [2023-11-25 00:03:45,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54046ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:45, skipping insertion in model container [2023-11-25 00:03:45,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:45" (3/3) ... [2023-11-25 00:03:45,862 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-99.i [2023-11-25 00:03:45,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:03:45,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:03:45,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:03:45,942 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;@3f67c41f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:03:45,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:03:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-25 00:03:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-25 00:03:45,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:45,959 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-25 00:03:45,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:03:45,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1853177043, now seen corresponding path program 1 times [2023-11-25 00:03:45,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:45,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143066072] [2023-11-25 00:03:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:45,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:03:46,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:03:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:03:46,330 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:03:46,332 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:03:46,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-25 00:03:46,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:03:46,340 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-25 00:03:46,344 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:03:46,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:03:46 BoogieIcfgContainer [2023-11-25 00:03:46,385 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:03:46,385 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:03:46,386 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:03:46,386 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:03:46,386 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:45" (3/4) ... [2023-11-25 00:03:46,389 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:03:46,390 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:03:46,391 INFO L158 Benchmark]: Toolchain (without parser) took 1635.32ms. Allocated memory is still 216.0MB. Free memory was 168.7MB in the beginning and 173.2MB in the end (delta: -4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:03:46,392 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 134.2MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:03:46,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.25ms. Allocated memory is still 216.0MB. Free memory was 168.2MB in the beginning and 156.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-25 00:03:46,393 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.57ms. Allocated memory is still 216.0MB. Free memory was 156.2MB in the beginning and 154.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:03:46,394 INFO L158 Benchmark]: Boogie Preprocessor took 45.70ms. Allocated memory is still 216.0MB. Free memory was 154.1MB in the beginning and 153.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:03:46,395 INFO L158 Benchmark]: RCFGBuilder took 642.90ms. Allocated memory is still 216.0MB. Free memory was 153.0MB in the beginning and 134.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-25 00:03:46,396 INFO L158 Benchmark]: TraceAbstraction took 529.16ms. Allocated memory is still 216.0MB. Free memory was 133.6MB in the beginning and 173.2MB in the end (delta: -39.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:03:46,396 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 216.0MB. Free memory was 173.2MB in the beginning and 173.2MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:03:46,400 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 134.2MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.25ms. Allocated memory is still 216.0MB. Free memory was 168.2MB in the beginning and 156.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.57ms. Allocated memory is still 216.0MB. Free memory was 156.2MB in the beginning and 154.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.70ms. Allocated memory is still 216.0MB. Free memory was 154.1MB in the beginning and 153.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 642.90ms. Allocated memory is still 216.0MB. Free memory was 153.0MB in the beginning and 134.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 529.16ms. Allocated memory is still 216.0MB. Free memory was 133.6MB in the beginning and 173.2MB in the end (delta: -39.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 216.0MB. Free memory was 173.2MB in the beginning and 173.2MB in the end (delta: 2.6kB). 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 42, overapproximation of someUnaryDOUBLEoperation at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 43, overapproximation of someBinaryDOUBLEComparisonOperation at line 43, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 255.5; [L23] unsigned char var_1_2 = 16; [L24] float var_1_4 = 1000000000000000.6; [L25] float var_1_5 = 500.5; [L26] float var_1_6 = 99999999999.5; [L27] double var_1_7 = 9.6; [L28] double var_1_8 = -0.2; [L29] double var_1_9 = 25.2; [L30] signed short int var_1_10 = 1; [L31] unsigned char var_1_11 = 0; [L32] signed long int var_1_15 = -64; [L79] isInitial = 1 [L80] FCALL initially() [L81] COND TRUE 1 [L82] FCALL updateLastVariables() [L83] CALL updateVariables() [L55] var_1_2 = __VERIFIER_nondet_uchar() [L56] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_4=5000000000000003/5, var_1_5=1001/2, var_1_6=199999999999/2, var_1_7=48/5, var_1_9=126/5] [L20] COND FALSE !(!cond) [L56] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_4=5000000000000003/5, var_1_5=1001/2, var_1_6=199999999999/2, var_1_7=48/5, var_1_9=126/5] [L57] CALL assume_abort_if_not(var_1_2 <= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_4=5000000000000003/5, var_1_5=1001/2, var_1_6=199999999999/2, var_1_7=48/5, var_1_9=126/5] [L20] COND FALSE !(!cond) [L57] RET assume_abort_if_not(var_1_2 <= 127) VAL [isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_4=5000000000000003/5, var_1_5=1001/2, var_1_6=199999999999/2, var_1_7=48/5, var_1_9=126/5] [L58] var_1_4 = __VERIFIER_nondet_float() [L59] CALL assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_5=1001/2, var_1_6=199999999999/2, var_1_7=48/5, var_1_9=126/5] [L20] COND FALSE !(!cond) [L59] RET assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854765600e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_5=1001/2, var_1_6=199999999999/2, var_1_7=48/5, var_1_9=126/5] [L60] var_1_5 = __VERIFIER_nondet_float() [L61] CALL assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_6=199999999999/2, var_1_7=48/5, var_1_9=126/5] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_6=199999999999/2, var_1_7=48/5, var_1_9=126/5] [L62] var_1_6 = __VERIFIER_nondet_float() [L63] CALL assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5, var_1_9=126/5] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5, var_1_9=126/5] [L64] var_1_8 = __VERIFIER_nondet_double() [L65] CALL assume_abort_if_not((var_1_8 >= -461168.6018427382800e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 4611686.018427382800e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5, var_1_9=126/5] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not((var_1_8 >= -461168.6018427382800e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 4611686.018427382800e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5, var_1_9=126/5] [L66] var_1_9 = __VERIFIER_nondet_double() [L67] CALL assume_abort_if_not((var_1_9 >= -461168.6018427382800e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 4611686.018427382800e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not((var_1_9 >= -461168.6018427382800e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 4611686.018427382800e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1, var_1_11=0, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5] [L68] var_1_11 = __VERIFIER_nondet_uchar() [L69] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, var_1_10=1, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5] [L70] CALL assume_abort_if_not(var_1_11 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_11 <= 1) VAL [isInitial=1, var_1_10=1, var_1_11=1, var_1_15=-64, var_1_1=511/2, var_1_2=127, var_1_7=48/5] [L83] RET updateVariables() [L84] CALL step() [L36] signed long int stepLocal_0 = (((8) < 0 ) ? -(8) : (8)); [L37] COND FALSE !((((((200) < (128)) ? (200) : (128))) - var_1_2) > stepLocal_0) [L40] var_1_1 = var_1_6 [L42] COND TRUE var_1_5 >= (var_1_4 + var_1_6) [L43] var_1_7 = ((((var_1_8 + var_1_9) < 0 ) ? -(var_1_8 + var_1_9) : (var_1_8 + var_1_9))) [L45] COND FALSE !(((var_1_6 - var_1_4) + var_1_7) >= var_1_5) [L50] COND TRUE ((var_1_2 + var_1_15) + var_1_15) >= var_1_15 [L51] var_1_10 = var_1_2 [L84] RET step() [L85] CALL, EXPR property() [L75-L76] return (((((((((200) < (128)) ? (200) : (128))) - var_1_2) > ((((8) < 0 ) ? -(8) : (8)))) ? (var_1_1 == ((float) (((((var_1_4) < (var_1_5)) ? (var_1_4) : (var_1_5))) - var_1_6))) : (var_1_1 == ((float) var_1_6))) && ((var_1_5 >= (var_1_4 + var_1_6)) ? (var_1_7 == ((double) ((((var_1_8 + var_1_9) < 0 ) ? -(var_1_8 + var_1_9) : (var_1_8 + var_1_9))))) : 1)) && ((((var_1_2 + var_1_15) + var_1_15) >= var_1_15) ? (var_1_10 == ((signed short int) var_1_2)) : 1)) && ((((var_1_6 - var_1_4) + var_1_7) >= var_1_5) ? (var_1_11 ? (var_1_15 == ((signed long int) 100)) : 1) : 1) ; [L85] RET, EXPR property() [L85] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=127, var_1_11=1, var_1_15=-64, var_1_1=1000000000000005, var_1_2=127, var_1_6=1000000000000005, var_1_7=48/5] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=127, var_1_11=1, var_1_15=-64, var_1_1=1000000000000005, var_1_2=127, var_1_6=1000000000000005, var_1_7=48/5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 9, 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=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 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 [2023-11-25 00:03:46,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/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_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91 --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 5b933671a1fface527dbef89f2ee599c80d54d1c8c988a3b741df55fc4b83921 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:03:49,202 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:03:49,274 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-25 00:03:49,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:03:49,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:03:49,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:03:49,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:03:49,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:03:49,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:03:49,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:03:49,333 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:03:49,334 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:03:49,334 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:03:49,336 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:03:49,337 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:03:49,337 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:03:49,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:03:49,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:03:49,339 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:03:49,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:03:49,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:03:49,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:03:49,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:03:49,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:03:49,343 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:03:49,344 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:03:49,344 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:03:49,345 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:03:49,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:03:49,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:03:49,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:03:49,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:03:49,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:03:49,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:03:49,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:49,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:03:49,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:03:49,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:03:49,350 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:03:49,351 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:03:49,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:03:49,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:03:49,353 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:03:49,353 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:03:49,353 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_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b933671a1fface527dbef89f2ee599c80d54d1c8c988a3b741df55fc4b83921 [2023-11-25 00:03:49,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:03:49,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:03:49,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:03:49,848 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:03:49,849 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:03:49,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i [2023-11-25 00:03:52,927 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:03:53,257 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:03:53,259 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i [2023-11-25 00:03:53,273 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/data/b8cdad37c/c823cf5cab4f4e079663c44063823552/FLAG4f5a21cc5 [2023-11-25 00:03:53,287 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/data/b8cdad37c/c823cf5cab4f4e079663c44063823552 [2023-11-25 00:03:53,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:03:53,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:03:53,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:53,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:03:53,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:03:53,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e59977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53, skipping insertion in model container [2023-11-25 00:03:53,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,339 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:03:53,539 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_e94ad60f-775e-4317-b45a-59ae5d3c7846/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i[915,928] [2023-11-25 00:03:53,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:53,630 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:03:53,646 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_e94ad60f-775e-4317-b45a-59ae5d3c7846/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-99.i[915,928] [2023-11-25 00:03:53,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:53,709 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:03:53,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53 WrapperNode [2023-11-25 00:03:53,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:53,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:53,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:03:53,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:03:53,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,782 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2023-11-25 00:03:53,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:53,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:03:53,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:03:53,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:03:53,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:03:53,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:03:53,861 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:03:53,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:03:53,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (1/1) ... [2023-11-25 00:03:53,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:53,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:53,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:03:53,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:03:53,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:03:53,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:03:53,967 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:03:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:03:53,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:03:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:03:54,085 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:03:54,088 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:03:59,981 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:04:00,045 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:04:00,045 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:04:00,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:00 BoogieIcfgContainer [2023-11-25 00:04:00,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:04:00,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:04:00,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:04:00,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:04:00,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:03:53" (1/3) ... [2023-11-25 00:04:00,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3bfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:00, skipping insertion in model container [2023-11-25 00:04:00,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:53" (2/3) ... [2023-11-25 00:04:00,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3bfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:00, skipping insertion in model container [2023-11-25 00:04:00,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:00" (3/3) ... [2023-11-25 00:04:00,061 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-99.i [2023-11-25 00:04:00,081 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:04:00,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:04:00,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:04:00,148 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;@67f41051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:04:00,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:04:00,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-25 00:04:00,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-25 00:04:00,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:00,165 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2023-11-25 00:04:00,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:00,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1447194716, now seen corresponding path program 1 times [2023-11-25 00:04:00,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:04:00,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492356365] [2023-11-25 00:04:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:00,187 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 [2023-11-25 00:04:00,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:04:00,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:04:00,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:04:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:00,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:04:00,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-25 00:04:00,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:04:00,641 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:04:00,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492356365] [2023-11-25 00:04:00,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492356365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:00,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:00,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:04:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903548847] [2023-11-25 00:04:00,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:00,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:04:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:04:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:04:00,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:04:00,701 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-25 00:04:02,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-25 00:04:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:02,863 INFO L93 Difference]: Finished difference Result 65 states and 107 transitions. [2023-11-25 00:04:02,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:04:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2023-11-25 00:04:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:02,899 INFO L225 Difference]: With dead ends: 65 [2023-11-25 00:04:02,900 INFO L226 Difference]: Without dead ends: 32 [2023-11-25 00:04:02,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:04:02,912 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:02,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2023-11-25 00:04:02,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-25 00:04:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-25 00:04:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-25 00:04:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 45 transitions. [2023-11-25 00:04:02,951 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 45 transitions. Word has length 61 [2023-11-25 00:04:02,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:02,952 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 45 transitions. [2023-11-25 00:04:02,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-25 00:04:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2023-11-25 00:04:02,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-25 00:04:02,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:02,956 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2023-11-25 00:04:02,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:04:03,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:04:03,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:03,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1948311954, now seen corresponding path program 1 times [2023-11-25 00:04:03,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:04:03,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715348865] [2023-11-25 00:04:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:03,162 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 [2023-11-25 00:04:03,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:04:03,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:04:03,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94ad60f-775e-4317-b45a-59ae5d3c7846/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:04:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:03,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-25 00:04:03,657 INFO L285 TraceCheckSpWp]: Computing forward predicates...