./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX --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 828b6f31ac8b338b9524f85315068e4bc72bfadb1d19ff8ea6318f966a3b277a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:46:11,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:46:11,907 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:46:11,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:46:11,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:46:11,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:46:11,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:46:11,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:46:11,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:46:11,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:46:11,949 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:46:11,950 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:46:11,950 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:46:11,951 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:46:11,951 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:46:11,952 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:46:11,953 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:46:11,953 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:46:11,954 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:46:11,955 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:46:11,955 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:46:11,956 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:46:11,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:46:11,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:46:11,958 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:46:11,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:46:11,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:46:11,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:46:11,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:46:11,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:46:11,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:46:11,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:46:11,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:46:11,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:46:11,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:46:11,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:46:11,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:46:11,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:46:11,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:46:11,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:46:11,968 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:46:11,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:46:11,969 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:46:11,969 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:46:11,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:46:11,970 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_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 828b6f31ac8b338b9524f85315068e4bc72bfadb1d19ff8ea6318f966a3b277a [2023-11-12 00:46:12,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:46:12,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:46:12,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:46:12,410 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:46:12,410 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:46:12,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i [2023-11-12 00:46:15,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:46:16,244 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:46:16,244 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i [2023-11-12 00:46:16,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/data/136880d50/191c1c8b007a4d9c99d1b73fe1dad3b4/FLAG4a1648e4e [2023-11-12 00:46:16,275 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/data/136880d50/191c1c8b007a4d9c99d1b73fe1dad3b4 [2023-11-12 00:46:16,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:46:16,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:46:16,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:16,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:46:16,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:46:16,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421ead61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16, skipping insertion in model container [2023-11-12 00:46:16,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:46:16,520 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_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i[914,927] [2023-11-12 00:46:16,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:46:16,580 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:46:16,595 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_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i[914,927] [2023-11-12 00:46:16,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:46:16,672 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:46:16,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16 WrapperNode [2023-11-12 00:46:16,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:16,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:46:16,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:46:16,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:46:16,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,759 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 94 [2023-11-12 00:46:16,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:46:16,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:46:16,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:46:16,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:46:16,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:46:16,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:46:16,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:46:16,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:46:16,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (1/1) ... [2023-11-12 00:46:16,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:46:16,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:46:16,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:46:16,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:46:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:46:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:46:16,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:46:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:46:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:46:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:46:17,059 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:46:17,063 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:46:17,483 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:46:17,721 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:46:17,721 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:46:17,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:46:17 BoogieIcfgContainer [2023-11-12 00:46:17,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:46:17,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:46:17,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:46:17,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:46:17,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:46:16" (1/3) ... [2023-11-12 00:46:17,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf14b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:46:17, skipping insertion in model container [2023-11-12 00:46:17,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:16" (2/3) ... [2023-11-12 00:46:17,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf14b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:46:17, skipping insertion in model container [2023-11-12 00:46:17,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:46:17" (3/3) ... [2023-11-12 00:46:17,747 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-0.i [2023-11-12 00:46:17,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:46:17,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:46:17,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:46:17,845 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;@1c92bce5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:46:17,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:46:17,851 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) [2023-11-12 00:46:17,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-12 00:46:17,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:46:17,864 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] [2023-11-12 00:46:17,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:46:17,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:46:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash -506593891, now seen corresponding path program 1 times [2023-11-12 00:46:17,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:46:17,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521473947] [2023-11-12 00:46:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:17,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:46:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:46:18,173 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:46:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:46:18,312 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:46:18,314 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:46:18,316 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:46:18,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:46:18,325 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:46:18,330 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:46:18,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:46:18 BoogieIcfgContainer [2023-11-12 00:46:18,389 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:46:18,389 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:46:18,390 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:46:18,390 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:46:18,390 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:46:17" (3/4) ... [2023-11-12 00:46:18,393 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:46:18,394 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:46:18,400 INFO L158 Benchmark]: Toolchain (without parser) took 2117.01ms. Allocated memory is still 151.0MB. Free memory was 120.6MB in the beginning and 108.2MB in the end (delta: 12.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-11-12 00:46:18,400 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 151.0MB. Free memory is still 119.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:46:18,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.43ms. Allocated memory is still 151.0MB. Free memory was 120.2MB in the beginning and 108.5MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:46:18,402 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.89ms. Allocated memory is still 151.0MB. Free memory was 108.5MB in the beginning and 106.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:46:18,403 INFO L158 Benchmark]: Boogie Preprocessor took 64.82ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:46:18,404 INFO L158 Benchmark]: RCFGBuilder took 890.84ms. Allocated memory is still 151.0MB. Free memory was 105.1MB in the beginning and 80.9MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-12 00:46:18,405 INFO L158 Benchmark]: TraceAbstraction took 660.80ms. Allocated memory is still 151.0MB. Free memory was 80.0MB in the beginning and 108.9MB in the end (delta: -28.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:46:18,405 INFO L158 Benchmark]: Witness Printer took 5.22ms. Allocated memory is still 151.0MB. Free memory was 108.9MB in the beginning and 108.2MB in the end (delta: 721.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:46:18,410 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 151.0MB. Free memory is still 119.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.43ms. Allocated memory is still 151.0MB. Free memory was 120.2MB in the beginning and 108.5MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.89ms. Allocated memory is still 151.0MB. Free memory was 108.5MB in the beginning and 106.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.82ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 890.84ms. Allocated memory is still 151.0MB. Free memory was 105.1MB in the beginning and 80.9MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 660.80ms. Allocated memory is still 151.0MB. Free memory was 80.0MB in the beginning and 108.9MB in the end (delta: -28.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.22ms. Allocated memory is still 151.0MB. Free memory was 108.9MB in the beginning and 108.2MB in the end (delta: 721.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 82, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of someBinaryArithmeticFLOAToperation at line 53. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 25.8; [L23] unsigned char var_1_2 = 1; [L24] double var_1_3 = 128.2; [L25] double var_1_4 = 15.4; [L26] double var_1_5 = 5.25; [L27] unsigned char var_1_6 = 0; [L28] float var_1_7 = 8.125; [L29] float var_1_8 = 0.4; [L30] float var_1_9 = 499.4; [L31] float var_1_10 = 63.16; [L86] isInitial = 1 [L87] FCALL initially() [L88] int k_loop; [L89] k_loop = 0 VAL [isInitial=1, k_loop=0, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=641/5, var_1_4=77/5, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L89] COND TRUE k_loop < 1 [L90] FCALL updateLastVariables() [L91] CALL updateVariables() [L62] var_1_2 = __VERIFIER_nondet_uchar() [L63] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_3=641/5, var_1_4=77/5, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_3=641/5, var_1_4=77/5, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L64] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=641/5, var_1_4=77/5, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=641/5, var_1_4=77/5, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L65] var_1_3 = __VERIFIER_nondet_double() [L66] CALL assume_abort_if_not((var_1_3 >= 0.0F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=77/5, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not((var_1_3 >= 0.0F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=77/5, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L67] var_1_4 = __VERIFIER_nondet_double() [L68] 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=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L20] COND FALSE !(!cond) [L68] 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=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L69] var_1_6 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L71] CALL assume_abort_if_not(var_1_6 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_6 <= 1) VAL [isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=2/5, var_1_9=2497/5] [L72] var_1_8 = __VERIFIER_nondet_float() [L73] CALL assume_abort_if_not((var_1_8 >= 0.0F && 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=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=504, var_1_9=2497/5] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 4611686.018427382800e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=504, var_1_9=2497/5] [L74] var_1_9 = __VERIFIER_nondet_float() [L75] CALL assume_abort_if_not((var_1_9 >= 0.0F && 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=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=504, var_1_9=81/5] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not((var_1_9 >= 0.0F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 4611686.018427382800e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1579/25, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=504, var_1_9=81/5] [L76] var_1_10 = __VERIFIER_nondet_float() [L77] CALL assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=506, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=504, var_1_9=81/5] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=506, var_1_1=129/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=65/8, var_1_8=504, var_1_9=81/5] [L91] RET updateVariables() [L92] CALL step() [L35] COND FALSE !(! var_1_2) [L38] var_1_1 = ((((16.2) < (var_1_3)) ? (16.2) : (var_1_3))) [L40] unsigned char stepLocal_0 = var_1_4 < var_1_3; [L41] COND TRUE stepLocal_0 || var_1_2 [L42] COND TRUE \read(var_1_2) [L43] COND FALSE !(\read(var_1_6)) [L48] unsigned char stepLocal_1 = var_1_1 <= (var_1_1 + var_1_3); [L49] COND TRUE var_1_2 || stepLocal_1 [L50] var_1_7 = ((((5.5f) < (((((128.4f) > (var_1_3)) ? (128.4f) : (var_1_3))))) ? (5.5f) : (((((128.4f) > (var_1_3)) ? (128.4f) : (var_1_3)))))) [L92] RET step() [L93] CALL, EXPR property() [L82-L83] return (((! var_1_2) ? (var_1_1 == ((double) (var_1_3 - var_1_4))) : (var_1_1 == ((double) ((((16.2) < (var_1_3)) ? (16.2) : (var_1_3)))))) && (((var_1_4 < var_1_3) || var_1_2) ? (var_1_2 ? (var_1_6 ? (var_1_5 == ((double) var_1_3)) : 1) : 1) : 1)) && ((var_1_2 || (var_1_1 <= (var_1_1 + var_1_3))) ? (var_1_7 == ((float) ((((5.5f) < (((((128.4f) > (var_1_3)) ? (128.4f) : (var_1_3))))) ? (5.5f) : (((((128.4f) > (var_1_3)) ? (128.4f) : (var_1_3)))))))) : (var_1_6 ? (var_1_7 == ((float) ((var_1_8 - var_1_9) + var_1_10))) : (var_1_2 ? (var_1_7 == ((float) var_1_9)) : 1))) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=506, var_1_1=81/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=81/5, var_1_8=504, var_1_9=81/5] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=506, var_1_1=81/5, var_1_2=1, var_1_3=81/5, var_1_4=505, var_1_5=21/4, var_1_6=0, var_1_7=81/5, var_1_8=504, var_1_9=81/5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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 [2023-11-12 00:46:18,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX --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 828b6f31ac8b338b9524f85315068e4bc72bfadb1d19ff8ea6318f966a3b277a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:46:21,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:46:21,713 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:46:21,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:46:21,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:46:21,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:46:21,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:46:21,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:46:21,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:46:21,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:46:21,760 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:46:21,760 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:46:21,761 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:46:21,762 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:46:21,762 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:46:21,763 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:46:21,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:46:21,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:46:21,765 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:46:21,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:46:21,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:46:21,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:46:21,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:46:21,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:46:21,769 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:46:21,769 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:46:21,770 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:46:21,770 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:46:21,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:46:21,771 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:46:21,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:46:21,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:46:21,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:46:21,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:46:21,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:46:21,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:46:21,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:46:21,775 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:46:21,776 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:46:21,776 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:46:21,777 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:46:21,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:46:21,777 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_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 828b6f31ac8b338b9524f85315068e4bc72bfadb1d19ff8ea6318f966a3b277a [2023-11-12 00:46:22,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:46:22,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:46:22,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:46:22,292 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:46:22,292 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:46:22,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i [2023-11-12 00:46:26,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:46:26,553 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:46:26,555 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i [2023-11-12 00:46:26,570 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/data/7a5ce891b/104e5ada6d614364ae9063dc37eb3c97/FLAGb82150d45 [2023-11-12 00:46:26,592 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/data/7a5ce891b/104e5ada6d614364ae9063dc37eb3c97 [2023-11-12 00:46:26,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:46:26,604 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:46:26,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:26,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:46:26,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:46:26,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:26" (1/1) ... [2023-11-12 00:46:26,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3475ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:26, skipping insertion in model container [2023-11-12 00:46:26,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:26" (1/1) ... [2023-11-12 00:46:26,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:46:26,904 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_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i[914,927] [2023-11-12 00:46:26,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:46:26,982 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:46:26,997 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_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-0.i[914,927] [2023-11-12 00:46:27,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:46:27,106 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:46:27,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27 WrapperNode [2023-11-12 00:46:27,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:27,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:46:27,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:46:27,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:46:27,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,200 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 94 [2023-11-12 00:46:27,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:46:27,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:46:27,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:46:27,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:46:27,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:46:27,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:46:27,263 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:46:27,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:46:27,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (1/1) ... [2023-11-12 00:46:27,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:46:27,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:46:27,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:46:27,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:46:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:46:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:46:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:46:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:46:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:46:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:46:27,477 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:46:27,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:46:30,606 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:46:30,619 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:46:30,619 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:46:30,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:46:30 BoogieIcfgContainer [2023-11-12 00:46:30,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:46:30,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:46:30,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:46:30,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:46:30,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:46:26" (1/3) ... [2023-11-12 00:46:30,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1d73fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:46:30, skipping insertion in model container [2023-11-12 00:46:30,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:27" (2/3) ... [2023-11-12 00:46:30,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1d73fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:46:30, skipping insertion in model container [2023-11-12 00:46:30,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:46:30" (3/3) ... [2023-11-12 00:46:30,637 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-0.i [2023-11-12 00:46:30,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:46:30,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:46:30,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:46:30,745 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;@2b0df80b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:46:30,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:46:30,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 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) [2023-11-12 00:46:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 00:46:30,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:46:30,765 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, 1, 1, 1, 1, 1] [2023-11-12 00:46:30,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:46:30,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:46:30,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1433725937, now seen corresponding path program 1 times [2023-11-12 00:46:30,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:46:30,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751359873] [2023-11-12 00:46:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:30,794 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 [2023-11-12 00:46:30,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:46:30,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:46:30,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:46:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:31,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:46:31,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:46:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-12 00:46:31,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:46:31,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:46:31,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751359873] [2023-11-12 00:46:31,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751359873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:46:31,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:46:31,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:46:31,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627986125] [2023-11-12 00:46:31,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:46:31,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:46:31,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:46:31,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:46:31,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:46:31,590 INFO L87 Difference]: Start difference. First operand has 45 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:46:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:46:31,621 INFO L93 Difference]: Finished difference Result 87 states and 132 transitions. [2023-11-12 00:46:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:46:31,624 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2023-11-12 00:46:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:46:31,634 INFO L225 Difference]: With dead ends: 87 [2023-11-12 00:46:31,635 INFO L226 Difference]: Without dead ends: 41 [2023-11-12 00:46:31,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:46:31,643 INFO L413 NwaCegarLoop]: 60 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, 60 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 [2023-11-12 00:46:31,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:46:31,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-12 00:46:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-12 00:46:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 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) [2023-11-12 00:46:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 56 transitions. [2023-11-12 00:46:31,719 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 56 transitions. Word has length 66 [2023-11-12 00:46:31,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:46:31,720 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 56 transitions. [2023-11-12 00:46:31,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-12 00:46:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2023-11-12 00:46:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 00:46:31,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:46:31,726 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, 1, 1, 1, 1, 1] [2023-11-12 00:46:31,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:46:31,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:46:31,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:46:31,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:46:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1065182093, now seen corresponding path program 1 times [2023-11-12 00:46:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:46:31,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889748025] [2023-11-12 00:46:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:46:31,956 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 [2023-11-12 00:46:31,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:46:31,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:46:31,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d688c24-6bf9-4e13-8ca9-5639c1d4f78b/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:46:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:46:32,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 00:46:32,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:47:07,280 WARN L293 SmtUtils]: Spent 9.66s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)