./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53f30ab10a4288d06e689397b8d255251f9aba86c268e0c63f767760f0335ff0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:48:39,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:48:39,377 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:48:39,383 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:48:39,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:48:39,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:48:39,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:48:39,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:48:39,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:48:39,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:48:39,415 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:48:39,415 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:48:39,416 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:48:39,416 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:48:39,417 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:48:39,418 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:48:39,419 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:48:39,420 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:48:39,420 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:48:39,421 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:48:39,421 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:48:39,424 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:48:39,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:48:39,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:48:39,425 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:48:39,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:48:39,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:48:39,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:48:39,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:48:39,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:48:39,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:48:39,428 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:48:39,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:48:39,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:48:39,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:48:39,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:48:39,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:39,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:48:39,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:48:39,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:48:39,431 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:48:39,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:48:39,432 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:48:39,433 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:48:39,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:48:39,433 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_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53f30ab10a4288d06e689397b8d255251f9aba86c268e0c63f767760f0335ff0 [2023-11-19 04:48:39,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:48:39,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:48:39,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:48:39,799 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:48:39,799 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:48:39,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i [2023-11-19 04:48:42,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:48:43,274 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:48:43,275 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i [2023-11-19 04:48:43,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/data/ed115ea6b/ea1528393897466db6fc74edf87db470/FLAG4fec310b2 [2023-11-19 04:48:43,311 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/data/ed115ea6b/ea1528393897466db6fc74edf87db470 [2023-11-19 04:48:43,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:48:43,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:48:43,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:43,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:48:43,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:48:43,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b497221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43, skipping insertion in model container [2023-11-19 04:48:43,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,373 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:48:43,537 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_b4541291-ed80-471f-9eca-7803f42b5dba/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i[915,928] [2023-11-19 04:48:43,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:43,591 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:48:43,605 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_b4541291-ed80-471f-9eca-7803f42b5dba/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i[915,928] [2023-11-19 04:48:43,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:43,658 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:48:43,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43 WrapperNode [2023-11-19 04:48:43,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:43,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:43,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:48:43,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:48:43,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,721 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 98 [2023-11-19 04:48:43,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:43,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:48:43,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:48:43,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:48:43,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:48:43,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:48:43,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:48:43,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:48:43,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:43,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:48:43,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:48:43,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:48:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:48:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:48:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:48:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:48:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:48:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:48:43,942 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:48:43,944 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:48:44,184 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:48:44,300 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:48:44,300 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:48:44,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:44 BoogieIcfgContainer [2023-11-19 04:48:44,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:48:44,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:48:44,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:48:44,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:48:44,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:48:43" (1/3) ... [2023-11-19 04:48:44,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef5ab59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:44, skipping insertion in model container [2023-11-19 04:48:44,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43" (2/3) ... [2023-11-19 04:48:44,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef5ab59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:44, skipping insertion in model container [2023-11-19 04:48:44,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:44" (3/3) ... [2023-11-19 04:48:44,317 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-95.i [2023-11-19 04:48:44,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:48:44,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:48:44,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:48:44,388 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;@772e8b95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:48:44,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:48:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:48:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 04:48:44,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:44,404 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:48:44,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:48:44,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1724534096, now seen corresponding path program 1 times [2023-11-19 04:48:44,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:48:44,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283403490] [2023-11-19 04:48:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:44,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:48:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:48:44,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:48:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:48:44,769 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:48:44,771 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:48:44,772 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:48:44,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:48:44,779 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:48:44,783 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:48:44,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:48:44 BoogieIcfgContainer [2023-11-19 04:48:44,849 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:48:44,852 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:48:44,852 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:48:44,852 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:48:44,853 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:44" (3/4) ... [2023-11-19 04:48:44,855 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:48:44,857 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:48:44,859 INFO L158 Benchmark]: Toolchain (without parser) took 1535.42ms. Allocated memory is still 163.6MB. Free memory was 128.2MB in the beginning and 66.0MB in the end (delta: 62.2MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2023-11-19 04:48:44,859 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:48:44,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.20ms. Allocated memory is still 163.6MB. Free memory was 128.2MB in the beginning and 115.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:48:44,863 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.21ms. Allocated memory is still 163.6MB. Free memory was 115.6MB in the beginning and 113.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:48:44,864 INFO L158 Benchmark]: Boogie Preprocessor took 32.56ms. Allocated memory is still 163.6MB. Free memory was 113.5MB in the beginning and 111.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:48:44,870 INFO L158 Benchmark]: RCFGBuilder took 553.17ms. Allocated memory is still 163.6MB. Free memory was 111.4MB in the beginning and 90.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:48:44,872 INFO L158 Benchmark]: TraceAbstraction took 538.05ms. Allocated memory is still 163.6MB. Free memory was 89.8MB in the beginning and 66.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 04:48:44,872 INFO L158 Benchmark]: Witness Printer took 5.41ms. Allocated memory is still 163.6MB. Free memory was 66.7MB in the beginning and 66.0MB in the end (delta: 678.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:48:44,882 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.20ms. Allocated memory is still 163.6MB. Free memory was 128.2MB in the beginning and 115.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.21ms. Allocated memory is still 163.6MB. Free memory was 115.6MB in the beginning and 113.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.56ms. Allocated memory is still 163.6MB. Free memory was 113.5MB in the beginning and 111.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 553.17ms. Allocated memory is still 163.6MB. Free memory was 111.4MB in the beginning and 90.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 538.05ms. Allocated memory is still 163.6MB. Free memory was 89.8MB in the beginning and 66.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.41ms. Allocated memory is still 163.6MB. Free memory was 66.7MB in the beginning and 66.0MB in the end (delta: 678.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 85, overapproximation of someUnaryDOUBLEoperation at line 24, overapproximation of someBinaryDOUBLEComparisonOperation at line 45, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = -64; [L23] float var_1_3 = 1.8; [L24] double var_1_5 = -0.75; [L25] double var_1_6 = 128.2; [L26] float var_1_8 = 127.4; [L27] float var_1_9 = 99999999.4; [L28] float var_1_10 = 2.8; [L29] double var_1_11 = 7.875; [L30] unsigned char var_1_12 = 128; [L31] unsigned char var_1_13 = 1; [L32] unsigned char var_1_14 = 25; [L33] unsigned char var_1_15 = 64; [L34] signed short int var_1_16 = 16; [L89] isInitial = 1 [L90] FCALL initially() [L91] COND TRUE 1 [L92] FCALL updateLastVariables() [L93] CALL updateVariables() [L60] var_1_5 = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not((var_1_5 >= -922337.2036854776000e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=641/5, var_1_8=637/5, var_1_9=499999997/5] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not((var_1_5 >= -922337.2036854776000e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854776000e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=641/5, var_1_8=637/5, var_1_9=499999997/5] [L62] CALL assume_abort_if_not(var_1_5 != 0.0F) VAL [\old(cond)=1, isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=641/5, var_1_8=637/5, var_1_9=499999997/5] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_5 != 0.0F) VAL [isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=641/5, var_1_8=637/5, var_1_9=499999997/5] [L63] var_1_6 = __VERIFIER_nondet_double() [L64] CALL assume_abort_if_not((var_1_6 >= -922337.2036854776000e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854776000e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=637/5, var_1_9=499999997/5] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not((var_1_6 >= -922337.2036854776000e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854776000e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=637/5, var_1_9=499999997/5] [L65] CALL assume_abort_if_not(var_1_6 != 0.0F) VAL [\old(cond)=1, isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=637/5, var_1_9=499999997/5] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_6 != 0.0F) VAL [isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=637/5, var_1_9=499999997/5] [L66] var_1_8 = __VERIFIER_nondet_float() [L67] CALL assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 4611686.018427382800e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=499999997/5] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 4611686.018427382800e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=499999997/5] [L68] var_1_9 = __VERIFIER_nondet_float() [L69] CALL assume_abort_if_not((var_1_9 >= -230584.3009213691390e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 2305843.009213691390e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not((var_1_9 >= -230584.3009213691390e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 2305843.009213691390e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=14/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L70] var_1_10 = __VERIFIER_nondet_float() [L71] CALL assume_abort_if_not((var_1_10 >= -230584.3009213691390e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 2305843.009213691390e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not((var_1_10 >= -230584.3009213691390e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 2305843.009213691390e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=1, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L72] var_1_13 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L74] CALL assume_abort_if_not(var_1_13 <= 64) VAL [\old(cond)=1, isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_13 <= 64) VAL [isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=25, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L75] var_1_14 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=1, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=1, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L77] CALL assume_abort_if_not(var_1_14 <= 63) VAL [\old(cond)=1, isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=1, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_14 <= 63) VAL [isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=1, var_1_15=64, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L78] var_1_15 = __VERIFIER_nondet_uchar() [L79] CALL assume_abort_if_not(var_1_15 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=1, var_1_15=0, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_15 >= 0) VAL [isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=1, var_1_15=0, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L80] CALL assume_abort_if_not(var_1_15 <= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=1, var_1_15=0, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_15 <= 127) VAL [isInitial=1, var_1_10=9/5, var_1_11=63/8, var_1_12=128, var_1_13=4, var_1_14=1, var_1_15=0, var_1_16=16, var_1_1=-64, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L93] RET updateVariables() [L94] CALL step() [L38] var_1_11 = (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) - var_1_8) [L39] var_1_12 = ((var_1_13 + var_1_14) + var_1_15) [L40] var_1_16 = var_1_13 [L41] var_1_1 = ((((var_1_12) < 0 ) ? -(var_1_12) : (var_1_12))) [L42] unsigned char stepLocal_2 = var_1_12; [L43] signed long int stepLocal_1 = -128; [L44] unsigned char stepLocal_0 = var_1_12; [L45] COND FALSE !((var_1_11 / ((((var_1_5) < (var_1_6)) ? (var_1_5) : (var_1_6)))) <= var_1_11) [L94] RET step() [L95] CALL, EXPR property() [L85-L86] return ((((var_1_1 == ((signed long int) ((((var_1_12) < 0 ) ? -(var_1_12) : (var_1_12))))) && (((var_1_11 / ((((var_1_5) < (var_1_6)) ? (var_1_5) : (var_1_6)))) <= var_1_11) ? ((var_1_12 == var_1_16) ? ((var_1_12 >= var_1_16) ? (var_1_3 == ((float) ((9.3f - var_1_8) + (var_1_9 + var_1_10)))) : 1) : ((var_1_12 < -128) ? (var_1_3 == ((float) var_1_8)) : (var_1_3 == ((float) var_1_10)))) : 1)) && (var_1_11 == ((double) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) - var_1_8)))) && (var_1_12 == ((unsigned char) ((var_1_13 + var_1_14) + var_1_15)))) && (var_1_16 == ((signed short int) var_1_13)) ; [L95] RET, EXPR property() [L95] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=9/5, var_1_12=5, var_1_13=4, var_1_14=1, var_1_15=0, var_1_16=4, var_1_1=5, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=9/5, var_1_12=5, var_1_13=4, var_1_14=1, var_1_15=0, var_1_16=4, var_1_1=5, var_1_3=9/5, var_1_6=100000005, var_1_8=100000004, var_1_9=100000006] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 13, 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=30occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:48:44,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53f30ab10a4288d06e689397b8d255251f9aba86c268e0c63f767760f0335ff0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:48:47,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:48:47,761 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:48:47,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:48:47,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:48:47,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:48:47,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:48:47,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:48:47,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:48:47,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:48:47,823 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:48:47,823 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:48:47,824 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:48:47,826 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:48:47,826 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:48:47,827 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:48:47,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:48:47,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:48:47,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:48:47,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:48:47,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:48:47,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:48:47,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:48:47,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:48:47,833 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:48:47,833 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:48:47,834 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:48:47,834 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:48:47,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:48:47,835 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:48:47,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:48:47,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:48:47,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:48:47,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:47,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:48:47,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:48:47,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:48:47,839 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:48:47,839 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:48:47,840 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:48:47,841 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:48:47,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:48:47,842 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_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53f30ab10a4288d06e689397b8d255251f9aba86c268e0c63f767760f0335ff0 [2023-11-19 04:48:48,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:48:48,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:48:48,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:48:48,368 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:48:48,370 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:48:48,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i [2023-11-19 04:48:51,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:48:52,122 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:48:52,123 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i [2023-11-19 04:48:52,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/data/37e92fa85/32f2139a51a34fa7a259c307634782f1/FLAGaf60d21dc [2023-11-19 04:48:52,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/data/37e92fa85/32f2139a51a34fa7a259c307634782f1 [2023-11-19 04:48:52,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:48:52,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:48:52,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:52,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:48:52,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:48:52,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69773a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52, skipping insertion in model container [2023-11-19 04:48:52,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,195 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:48:52,424 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_b4541291-ed80-471f-9eca-7803f42b5dba/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i[915,928] [2023-11-19 04:48:52,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:52,513 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:48:52,531 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_b4541291-ed80-471f-9eca-7803f42b5dba/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-95.i[915,928] [2023-11-19 04:48:52,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:52,604 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:48:52,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52 WrapperNode [2023-11-19 04:48:52,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:52,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:52,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:48:52,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:48:52,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,685 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 98 [2023-11-19 04:48:52,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:52,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:48:52,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:48:52,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:48:52,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:48:52,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:48:52,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:48:52,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:48:52,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (1/1) ... [2023-11-19 04:48:52,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:52,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:48:52,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:48:52,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:48:52,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:48:52,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:48:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:48:52,866 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:48:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:48:52,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:48:52,965 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:48:52,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:49:00,811 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:49:00,819 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:49:00,820 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:49:00,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:00 BoogieIcfgContainer [2023-11-19 04:49:00,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:49:00,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:49:00,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:49:00,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:49:00,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:48:52" (1/3) ... [2023-11-19 04:49:00,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201877ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:00, skipping insertion in model container [2023-11-19 04:49:00,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:52" (2/3) ... [2023-11-19 04:49:00,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201877ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:00, skipping insertion in model container [2023-11-19 04:49:00,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:00" (3/3) ... [2023-11-19 04:49:00,833 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-95.i [2023-11-19 04:49:00,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:49:00,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:49:00,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:49:00,910 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;@3e6b60ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:49:00,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:49:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:49:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 04:49:00,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:00,928 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:00,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:49:00,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1667905273, now seen corresponding path program 1 times [2023-11-19 04:49:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:49:00,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776149544] [2023-11-19 04:49:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:00,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:00,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:49:00,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:49:00,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:49:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:02,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:49:02,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-19 04:49:02,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:02,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:49:02,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776149544] [2023-11-19 04:49:02,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776149544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:02,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:02,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:02,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630796677] [2023-11-19 04:49:02,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:02,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:49:02,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:49:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:49:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:49:02,290 INFO L87 Difference]: Start difference. First operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 04:49:02,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:02,320 INFO L93 Difference]: Finished difference Result 81 states and 133 transitions. [2023-11-19 04:49:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:49:02,322 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2023-11-19 04:49:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:02,331 INFO L225 Difference]: With dead ends: 81 [2023-11-19 04:49:02,331 INFO L226 Difference]: Without dead ends: 40 [2023-11-19 04:49:02,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:49:02,339 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:02,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:49:02,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-19 04:49:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-19 04:49:02,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:49:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 56 transitions. [2023-11-19 04:49:02,392 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 56 transitions. Word has length 83 [2023-11-19 04:49:02,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:02,393 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 56 transitions. [2023-11-19 04:49:02,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 04:49:02,394 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 56 transitions. [2023-11-19 04:49:02,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 04:49:02,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:02,399 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:02,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:02,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:02,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:49:02,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:02,623 INFO L85 PathProgramCache]: Analyzing trace with hash -498736269, now seen corresponding path program 1 times [2023-11-19 04:49:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:49:02,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691113312] [2023-11-19 04:49:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:02,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:02,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:49:02,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:49:02,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4541291-ed80-471f-9eca-7803f42b5dba/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:49:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:04,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 04:49:04,128 INFO L285 TraceCheckSpWp]: Computing forward predicates...