./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire --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 bf188cc293474c9f6aa32f358cba173af59946707dd6a06eac63218abddc632b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:50,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:50,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:30:50,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:50,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:50,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:50,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:50,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:50,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:50,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:50,780 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:50,782 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:50,782 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:50,784 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:30:50,785 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:50,785 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:50,786 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:30:50,786 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:30:50,788 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:50,789 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:30:50,789 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:30:50,790 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:30:50,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:50,792 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:30:50,792 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:30:50,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:30:50,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:30:50,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:50,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:30:50,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:50,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:30:50,812 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:30:50,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:30:50,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:50,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:50,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:50,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:50,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:50,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:50,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:50,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:30:50,815 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:30:50,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:30:50,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:50,816 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:30:50,816 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:50,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:50,816 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_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf188cc293474c9f6aa32f358cba173af59946707dd6a06eac63218abddc632b [2023-11-23 21:30:51,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:30:51,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:30:51,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:30:51,118 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:30:51,118 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:30:51,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i [2023-11-23 21:30:54,334 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:30:54,665 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:30:54,666 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i [2023-11-23 21:30:54,680 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/data/f427cfad9/574d08516c2a48c890db4cb4e0776c9e/FLAG7de9c7504 [2023-11-23 21:30:54,703 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/data/f427cfad9/574d08516c2a48c890db4cb4e0776c9e [2023-11-23 21:30:54,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:30:54,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:30:54,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:54,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:30:54,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:30:54,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:54" (1/1) ... [2023-11-23 21:30:54,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd8d89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:54, skipping insertion in model container [2023-11-23 21:30:54,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:54" (1/1) ... [2023-11-23 21:30:54,783 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:55,014 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_9ffa13ef-8549-4654-b8d5-1b462ee4323d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928] [2023-11-23 21:30:55,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:55,093 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:30:55,105 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_9ffa13ef-8549-4654-b8d5-1b462ee4323d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928] [2023-11-23 21:30:55,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:55,163 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:30:55,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55 WrapperNode [2023-11-23 21:30:55,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:55,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:55,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:30:55,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:30:55,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,240 INFO L138 Inliner]: procedures = 26, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 132 [2023-11-23 21:30:55,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:55,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:30:55,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:30:55,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:30:55,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:30:55,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:30:55,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:30:55,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:30:55,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (1/1) ... [2023-11-23 21:30:55,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:55,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:55,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:30:55,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:30:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:30:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:30:55,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:30:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:30:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:30:55,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:30:55,486 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:30:55,488 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:30:55,853 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:30:56,182 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:30:56,182 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:30:56,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:56 BoogieIcfgContainer [2023-11-23 21:30:56,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:30:56,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:30:56,188 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:30:56,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:30:56,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:30:54" (1/3) ... [2023-11-23 21:30:56,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a45bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:56, skipping insertion in model container [2023-11-23 21:30:56,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:55" (2/3) ... [2023-11-23 21:30:56,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a45bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:56, skipping insertion in model container [2023-11-23 21:30:56,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:56" (3/3) ... [2023-11-23 21:30:56,199 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-31.i [2023-11-23 21:30:56,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:30:56,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:30:56,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:30:56,272 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;@75787fd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:30:56,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:30:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:30:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 21:30:56,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:56,287 INFO L195 NwaCegarLoop]: trace histogram [11, 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] [2023-11-23 21:30:56,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:56,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash -556050674, now seen corresponding path program 1 times [2023-11-23 21:30:56,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:56,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942703313] [2023-11-23 21:30:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:56,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:56,495 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:30:56,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042893097] [2023-11-23 21:30:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:56,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:56,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:56,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:56,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:30:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:30:56,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:30:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:30:56,821 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:30:56,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:30:56,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:30:56,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:57,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:57,058 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:30:57,063 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:30:57,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:30:57 BoogieIcfgContainer [2023-11-23 21:30:57,141 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:30:57,142 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:30:57,142 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:30:57,143 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:30:57,143 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:56" (3/4) ... [2023-11-23 21:30:57,146 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:30:57,147 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:30:57,149 INFO L158 Benchmark]: Toolchain (without parser) took 2435.18ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 108.9MB in the beginning and 134.7MB in the end (delta: -25.8MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2023-11-23 21:30:57,149 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 155.2MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:30:57,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.20ms. Allocated memory is still 155.2MB. Free memory was 108.3MB in the beginning and 96.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:30:57,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.30ms. Allocated memory is still 155.2MB. Free memory was 96.2MB in the beginning and 93.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:30:57,153 INFO L158 Benchmark]: Boogie Preprocessor took 43.20ms. Allocated memory is still 155.2MB. Free memory was 93.1MB in the beginning and 91.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:30:57,154 INFO L158 Benchmark]: RCFGBuilder took 898.31ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 91.6MB in the beginning and 164.1MB in the end (delta: -72.5MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2023-11-23 21:30:57,155 INFO L158 Benchmark]: TraceAbstraction took 953.44ms. Allocated memory is still 205.5MB. Free memory was 163.0MB in the beginning and 134.7MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-23 21:30:57,155 INFO L158 Benchmark]: Witness Printer took 5.03ms. Allocated memory is still 205.5MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:30:57,158 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 155.2MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.20ms. Allocated memory is still 155.2MB. Free memory was 108.3MB in the beginning and 96.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.30ms. Allocated memory is still 155.2MB. Free memory was 96.2MB in the beginning and 93.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.20ms. Allocated memory is still 155.2MB. Free memory was 93.1MB in the beginning and 91.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 898.31ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 91.6MB in the beginning and 164.1MB in the end (delta: -72.5MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * TraceAbstraction took 953.44ms. Allocated memory is still 205.5MB. Free memory was 163.0MB in the beginning and 134.7MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 5.03ms. Allocated memory is still 205.5MB. Free memory is still 134.7MB. 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 someBinaryDOUBLEComparisonOperation at line 87, overapproximation of bitwiseOr at line 43. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = 200; [L23] unsigned char var_1_2 = 0; [L24] signed long int var_1_3 = 1107940323; [L25] unsigned char var_1_6 = 0; [L26] unsigned char var_1_7 = 0; [L27] unsigned char var_1_8 = 16; [L28] unsigned char var_1_9 = 16; [L29] unsigned short int var_1_10 = 4; [L30] double var_1_11 = 1000000.5; [L31] double var_1_12 = 1.25; [L32] signed long int last_1_var_1_1 = 200; [L33] unsigned char last_1_var_1_8 = 16; [L34] unsigned short int last_1_var_1_10 = 4; [L91] isInitial = 1 [L92] FCALL initially() [L93] COND TRUE 1 [L94] CALL updateLastVariables() [L82] last_1_var_1_1 = var_1_1 [L83] last_1_var_1_8 = var_1_8 [L84] last_1_var_1_10 = var_1_10 [L94] RET updateLastVariables() [L95] CALL updateVariables() [L63] var_1_2 = __VERIFIER_nondet_uchar() [L64] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L65] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1107940323, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L66] var_1_3 = __VERIFIER_nondet_long() [L67] CALL assume_abort_if_not(var_1_3 >= 1073741822) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_3 >= 1073741822) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L68] CALL assume_abort_if_not(var_1_3 <= 2147483646) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_3 <= 2147483646) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=0, var_1_7=0, var_1_8=16, var_1_9=16] [L69] var_1_6 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_7=0, var_1_8=16, var_1_9=16] [L71] CALL assume_abort_if_not(var_1_6 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_6 <= 1) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=16] [L72] var_1_7 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_8=16, var_1_9=16] [L74] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=16] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=16] [L75] var_1_9 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16] [L77] CALL assume_abort_if_not(var_1_9 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=199] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_9 <= 254) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_12=5/4, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=199] [L78] var_1_12 = __VERIFIER_nondet_double() [L79] CALL assume_abort_if_not((var_1_12 >= -922337.2036854765600e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854765600e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=199] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not((var_1_12 >= -922337.2036854765600e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854765600e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=4, var_1_11=2000001/2, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=199] [L95] RET updateVariables() [L96] CALL step() [L38] signed long int stepLocal_2 = last_1_var_1_8; [L39] signed long int stepLocal_1 = var_1_3 * last_1_var_1_8; [L40] COND TRUE stepLocal_1 >= last_1_var_1_1 [L41] var_1_10 = (2 + var_1_9) [L49] signed long int stepLocal_0 = last_1_var_1_10 / var_1_3; [L50] COND FALSE !(stepLocal_0 >= (500 - last_1_var_1_10)) [L53] COND FALSE !(\read(var_1_2)) [L56] COND FALSE !(var_1_6 && var_1_7) [L60] var_1_11 = var_1_12 [L96] RET step() [L97] CALL, EXPR property() [L87] EXPR ((var_1_2 ? (var_1_1 == ((signed long int) ((var_1_3 - var_1_10) - var_1_8))) : ((var_1_6 && var_1_7) ? (var_1_1 == ((signed long int) var_1_10)) : 1)) && (((last_1_var_1_10 / var_1_3) >= (500 - last_1_var_1_10)) ? (var_1_8 == ((unsigned char) var_1_9)) : 1)) && (((var_1_3 * last_1_var_1_8) >= last_1_var_1_1) ? (var_1_10 == ((unsigned short int) (2 + var_1_9))) : ((last_1_var_1_8 == (last_1_var_1_8 ^ last_1_var_1_1)) ? (var_1_10 == ((unsigned short int) (var_1_9 + ((((last_1_var_1_1) < (4)) ? (last_1_var_1_1) : (4)))))) : (var_1_10 == ((unsigned short int) last_1_var_1_1)))) [L87] EXPR ((var_1_3 * last_1_var_1_8) >= last_1_var_1_1) ? (var_1_10 == ((unsigned short int) (2 + var_1_9))) : ((last_1_var_1_8 == (last_1_var_1_8 ^ last_1_var_1_1)) ? (var_1_10 == ((unsigned short int) (var_1_9 + ((((last_1_var_1_1) < (4)) ? (last_1_var_1_1) : (4)))))) : (var_1_10 == ((unsigned short int) last_1_var_1_1))) [L87] EXPR ((var_1_2 ? (var_1_1 == ((signed long int) ((var_1_3 - var_1_10) - var_1_8))) : ((var_1_6 && var_1_7) ? (var_1_1 == ((signed long int) var_1_10)) : 1)) && (((last_1_var_1_10 / var_1_3) >= (500 - last_1_var_1_10)) ? (var_1_8 == ((unsigned char) var_1_9)) : 1)) && (((var_1_3 * last_1_var_1_8) >= last_1_var_1_1) ? (var_1_10 == ((unsigned short int) (2 + var_1_9))) : ((last_1_var_1_8 == (last_1_var_1_8 ^ last_1_var_1_1)) ? (var_1_10 == ((unsigned short int) (var_1_9 + ((((last_1_var_1_1) < (4)) ? (last_1_var_1_1) : (4)))))) : (var_1_10 == ((unsigned short int) last_1_var_1_1)))) [L87-L88] return (((var_1_2 ? (var_1_1 == ((signed long int) ((var_1_3 - var_1_10) - var_1_8))) : ((var_1_6 && var_1_7) ? (var_1_1 == ((signed long int) var_1_10)) : 1)) && (((last_1_var_1_10 / var_1_3) >= (500 - last_1_var_1_10)) ? (var_1_8 == ((unsigned char) var_1_9)) : 1)) && (((var_1_3 * last_1_var_1_8) >= last_1_var_1_1) ? (var_1_10 == ((unsigned short int) (2 + var_1_9))) : ((last_1_var_1_8 == (last_1_var_1_8 ^ last_1_var_1_1)) ? (var_1_10 == ((unsigned short int) (var_1_9 + ((((last_1_var_1_1) < (4)) ? (last_1_var_1_1) : (4)))))) : (var_1_10 == ((unsigned short int) last_1_var_1_1))))) && (var_1_11 == ((double) var_1_12)) ; [L97] RET, EXPR property() [L97] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=201, var_1_11=2, var_1_12=2, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=199] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=4, last_1_var_1_1=200, last_1_var_1_8=16, var_1_10=201, var_1_11=2, var_1_12=2, var_1_1=200, var_1_2=0, var_1_3=1073741822, var_1_6=1, var_1_7=0, var_1_8=16, var_1_9=199] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 11, 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=26occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 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 [2023-11-23 21:30:57,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire --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 bf188cc293474c9f6aa32f358cba173af59946707dd6a06eac63218abddc632b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:59,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:00,147 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:31:00,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:00,158 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:00,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:00,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:00,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:00,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:00,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:00,213 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:00,214 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:00,214 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:00,216 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:00,216 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:00,217 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:00,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:00,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:31:00,219 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:00,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:00,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:00,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:31:00,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:00,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:31:00,223 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:31:00,223 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:31:00,224 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:31:00,224 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:00,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:31:00,225 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:00,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:00,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:31:00,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:00,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:00,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:00,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:00,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:00,229 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:31:00,229 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:31:00,230 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:31:00,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:00,231 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:31:00,231 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:00,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:00,232 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_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf188cc293474c9f6aa32f358cba173af59946707dd6a06eac63218abddc632b [2023-11-23 21:31:00,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:00,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:00,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:00,698 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:00,698 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:00,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i [2023-11-23 21:31:03,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:04,182 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:04,183 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i [2023-11-23 21:31:04,192 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/data/9f7789ac0/0b6d95827a9141c08413b0f00f8580be/FLAGfb33df856 [2023-11-23 21:31:04,207 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/data/9f7789ac0/0b6d95827a9141c08413b0f00f8580be [2023-11-23 21:31:04,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:04,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:04,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:04,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:04,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:04,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5861df26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04, skipping insertion in model container [2023-11-23 21:31:04,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:04,404 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_9ffa13ef-8549-4654-b8d5-1b462ee4323d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928] [2023-11-23 21:31:04,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:04,469 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:04,496 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_9ffa13ef-8549-4654-b8d5-1b462ee4323d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-31.i[915,928] [2023-11-23 21:31:04,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:04,560 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:04,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04 WrapperNode [2023-11-23 21:31:04,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:04,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:04,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:04,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:04,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,614 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 94 [2023-11-23 21:31:04,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:04,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:04,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:04,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:04,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:04,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:04,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:04,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:04,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:04,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:04,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:04,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:31:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:31:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:31:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:04,814 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:04,818 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:05,191 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:05,259 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:05,259 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:31:05,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:05 BoogieIcfgContainer [2023-11-23 21:31:05,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:05,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:05,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:05,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:05,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:04" (1/3) ... [2023-11-23 21:31:05,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f875162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:05, skipping insertion in model container [2023-11-23 21:31:05,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (2/3) ... [2023-11-23 21:31:05,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f875162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:05, skipping insertion in model container [2023-11-23 21:31:05,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:05" (3/3) ... [2023-11-23 21:31:05,269 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-31.i [2023-11-23 21:31:05,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:05,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:31:05,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:05,372 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;@6e2fe652, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:05,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:31:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:31:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 21:31:05,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:05,391 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2023-11-23 21:31:05,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:05,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:05,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1467516349, now seen corresponding path program 1 times [2023-11-23 21:31:05,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:05,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007222114] [2023-11-23 21:31:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:05,420 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 [2023-11-23 21:31:05,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:05,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:31:05,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:31:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:05,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:31:05,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-23 21:31:05,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:05,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007222114] [2023-11-23 21:31:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007222114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:05,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34640804] [2023-11-23 21:31:05,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:05,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:31:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:31:05,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:31:05,809 INFO L87 Difference]: Start difference. First operand has 36 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:31:05,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:05,886 INFO L93 Difference]: Finished difference Result 69 states and 117 transitions. [2023-11-23 21:31:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:31:05,894 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 70 [2023-11-23 21:31:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:05,902 INFO L225 Difference]: With dead ends: 69 [2023-11-23 21:31:05,902 INFO L226 Difference]: Without dead ends: 34 [2023-11-23 21:31:05,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:31:05,913 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:05,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:31:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-23 21:31:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-23 21:31:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:31:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2023-11-23 21:31:05,981 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 70 [2023-11-23 21:31:05,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:05,982 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2023-11-23 21:31:05,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:31:05,983 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2023-11-23 21:31:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 21:31:05,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:05,989 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2023-11-23 21:31:06,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:31:06,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:31:06,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:06,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1542214529, now seen corresponding path program 1 times [2023-11-23 21:31:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:06,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241713815] [2023-11-23 21:31:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:06,198 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 [2023-11-23 21:31:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:06,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:31:06,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:31:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:06,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:31:06,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-23 21:31:08,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:31:13,118 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241713815] [2023-11-23 21:31:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241713815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:31:13,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1575505720] [2023-11-23 21:31:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:13,119 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:31:13,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:31:13,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:31:13,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 21:31:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:13,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:31:13,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-23 21:31:15,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:31:16,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1575505720] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:31:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807864810] [2023-11-23 21:31:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:16,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:16,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:16,930 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:31:16,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:31:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:17,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:31:17,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-23 21:31:18,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:31:20,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807864810] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:31:20,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:31:20,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 14 [2023-11-23 21:31:20,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862297997] [2023-11-23 21:31:20,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:31:20,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 21:31:20,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 21:31:20,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2023-11-23 21:31:20,326 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 21:31:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:24,281 INFO L93 Difference]: Finished difference Result 123 states and 169 transitions. [2023-11-23 21:31:24,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 21:31:24,288 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 70 [2023-11-23 21:31:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:24,290 INFO L225 Difference]: With dead ends: 123 [2023-11-23 21:31:24,291 INFO L226 Difference]: Without dead ends: 90 [2023-11-23 21:31:24,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=410, Invalid=996, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 21:31:24,294 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 172 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:24,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 215 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:31:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-23 21:31:24,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2023-11-23 21:31:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-23 21:31:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions. [2023-11-23 21:31:24,318 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 93 transitions. Word has length 70 [2023-11-23 21:31:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:24,319 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 93 transitions. [2023-11-23 21:31:24,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 21:31:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 93 transitions. [2023-11-23 21:31:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 21:31:24,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:24,322 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2023-11-23 21:31:24,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:24,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:24,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:31:24,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:24,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1540367487, now seen corresponding path program 1 times [2023-11-23 21:31:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:24,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618207968] [2023-11-23 21:31:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:24,933 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 [2023-11-23 21:31:24,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:24,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:31:24,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffa13ef-8549-4654-b8d5-1b462ee4323d/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:31:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:25,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 21:31:25,072 INFO L285 TraceCheckSpWp]: Computing forward predicates...