./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.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_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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_020d89c5-4727-4aab-9fa8-cda6295f7add/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 69e3fd0d89ff67704309f926d24cfd61e1dc768d923ba7c9bb18b30d139558fd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:16:06,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:16:06,449 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:16:06,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:16:06,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:16:06,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:16:06,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:16:06,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:16:06,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:16:06,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:16:06,511 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:16:06,513 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:16:06,513 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:16:06,515 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:16:06,515 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:16:06,516 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:16:06,516 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:16:06,517 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:16:06,517 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:16:06,518 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:16:06,520 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:16:06,520 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:16:06,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:16:06,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:16:06,523 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:16:06,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:16:06,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:16:06,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:16:06,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:16:06,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:16:06,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:16:06,526 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:16:06,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:16:06,527 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:16:06,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:16:06,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:16:06,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:16:06,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:06,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:16:06,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:16:06,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:16:06,529 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:16:06,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:16:06,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:16:06,530 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:16:06,531 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:16:06,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:16:06,531 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_020d89c5-4727-4aab-9fa8-cda6295f7add/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69e3fd0d89ff67704309f926d24cfd61e1dc768d923ba7c9bb18b30d139558fd [2023-11-23 21:16:06,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:16:06,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:16:06,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:16:06,861 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:16:06,861 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:16:06,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i [2023-11-23 21:16:10,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:10,417 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:10,418 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i [2023-11-23 21:16:10,429 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/data/35fc6aa94/e7bc04bf0c6249c0b10072b3494e2978/FLAG5831daab2 [2023-11-23 21:16:10,443 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/data/35fc6aa94/e7bc04bf0c6249c0b10072b3494e2978 [2023-11-23 21:16:10,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:10,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:10,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:10,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:10,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:10,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293d9f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10, skipping insertion in model container [2023-11-23 21:16:10,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,507 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:10,672 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_020d89c5-4727-4aab-9fa8-cda6295f7add/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i[915,928] [2023-11-23 21:16:10,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:10,730 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:10,743 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_020d89c5-4727-4aab-9fa8-cda6295f7add/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i[915,928] [2023-11-23 21:16:10,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:10,787 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:10,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10 WrapperNode [2023-11-23 21:16:10,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:10,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:10,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:10,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:10,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,874 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 131 [2023-11-23 21:16:10,875 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:10,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:10,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:10,876 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:10,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:10,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:10,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:10,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:10,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (1/1) ... [2023-11-23 21:16:10,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:10,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:10,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:11,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:16:11,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:16:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:16:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:11,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:11,166 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:11,169 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:11,495 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:11,869 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:11,869 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:16:11,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:11 BoogieIcfgContainer [2023-11-23 21:16:11,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:11,875 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:11,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:11,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:11,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:10" (1/3) ... [2023-11-23 21:16:11,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b1f479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:11, skipping insertion in model container [2023-11-23 21:16:11,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:10" (2/3) ... [2023-11-23 21:16:11,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b1f479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:11, skipping insertion in model container [2023-11-23 21:16:11,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:11" (3/3) ... [2023-11-23 21:16:11,882 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-18.i [2023-11-23 21:16:11,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:11,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:16:11,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:11,958 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;@134297d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:11,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:16:11,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:16:11,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:16:11,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:11,976 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2023-11-23 21:16:11,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:11,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1697771121, now seen corresponding path program 1 times [2023-11-23 21:16:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:11,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279881136] [2023-11-23 21:16:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:11,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:12,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:12,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040970829] [2023-11-23 21:16:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:12,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:12,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:12,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:12,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:16:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:16:12,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:16:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:16:12,664 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:16:12,667 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:16:12,668 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:16:12,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:12,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:16:12,885 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:16:12,898 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:16:12,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:16:12 BoogieIcfgContainer [2023-11-23 21:16:12,983 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:16:12,984 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:16:12,984 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:16:12,985 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:16:12,985 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:11" (3/4) ... [2023-11-23 21:16:12,988 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:16:12,990 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:16:12,991 INFO L158 Benchmark]: Toolchain (without parser) took 2543.72ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 108.9MB in the beginning and 111.4MB in the end (delta: -2.5MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2023-11-23 21:16:12,992 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 155.2MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:16:12,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.70ms. Allocated memory is still 155.2MB. Free memory was 108.9MB in the beginning and 96.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:16:12,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.32ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 94.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:12,995 INFO L158 Benchmark]: Boogie Preprocessor took 42.59ms. Allocated memory is still 155.2MB. Free memory was 94.3MB in the beginning and 93.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:12,996 INFO L158 Benchmark]: RCFGBuilder took 952.49ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 93.0MB in the beginning and 144.7MB in the end (delta: -51.8MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2023-11-23 21:16:12,996 INFO L158 Benchmark]: TraceAbstraction took 1108.21ms. Allocated memory is still 186.6MB. Free memory was 143.8MB in the beginning and 111.4MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-23 21:16:12,997 INFO L158 Benchmark]: Witness Printer took 5.58ms. Allocated memory is still 186.6MB. Free memory is still 111.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:16:13,001 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 155.2MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.70ms. Allocated memory is still 155.2MB. Free memory was 108.9MB in the beginning and 96.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.32ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 94.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.59ms. Allocated memory is still 155.2MB. Free memory was 94.3MB in the beginning and 93.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 952.49ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 93.0MB in the beginning and 144.7MB in the end (delta: -51.8MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1108.21ms. Allocated memory is still 186.6MB. Free memory was 143.8MB in the beginning and 111.4MB in the end (delta: 32.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 5.58ms. Allocated memory is still 186.6MB. Free memory is still 111.4MB. 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 58, overapproximation of bitwiseOr at line 39. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 99.25; [L23] signed short int var_1_6 = 32; [L24] signed short int var_1_7 = 18477; [L25] signed short int var_1_8 = 5; [L26] float var_1_9 = 100.8; [L27] unsigned long int var_1_10 = 256; [L28] unsigned char var_1_11 = 0; [L29] unsigned char var_1_12 = 10; [L30] unsigned long int var_1_13 = 1879106797; [L31] unsigned long int var_1_14 = 1581421231; [L32] signed long int var_1_15 = -32; [L33] unsigned long int last_1_var_1_10 = 256; [L34] signed long int last_1_var_1_15 = -32; [L103] isInitial = 1 [L104] FCALL initially() [L105] int k_loop; [L106] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=32, var_1_7=18477, var_1_8=5, var_1_9=504/5] [L106] COND TRUE k_loop < 1 [L107] CALL updateLastVariables() [L95] last_1_var_1_10 = var_1_10 [L96] last_1_var_1_15 = var_1_15 [L107] RET updateLastVariables() [L108] CALL updateVariables() [L69] var_1_6 = __VERIFIER_nondet_short() [L70] CALL assume_abort_if_not(var_1_6 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=18477, var_1_8=5, var_1_9=504/5] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_6 >= -1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=18477, var_1_8=5, var_1_9=504/5] [L71] CALL assume_abort_if_not(var_1_6 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=18477, var_1_8=5, var_1_9=504/5] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_6 <= 32767) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=18477, var_1_8=5, var_1_9=504/5] [L72] var_1_7 = __VERIFIER_nondet_short() [L73] CALL assume_abort_if_not(var_1_7 >= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=5, var_1_9=504/5] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_7 >= 16383) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=5, var_1_9=504/5] [L74] CALL assume_abort_if_not(var_1_7 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=5, var_1_9=504/5] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_7 <= 32767) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=5, var_1_9=504/5] [L75] var_1_8 = __VERIFIER_nondet_short() [L76] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0, var_1_9=504/5] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0, var_1_9=504/5] [L77] CALL assume_abort_if_not(var_1_8 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0, var_1_9=504/5] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_8 <= 16383) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0, var_1_9=504/5] [L78] var_1_9 = __VERIFIER_nondet_float() [L79] CALL assume_abort_if_not((var_1_9 >= -922337.2036854765600e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854765600e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not((var_1_9 >= -922337.2036854765600e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854765600e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L80] var_1_11 = __VERIFIER_nondet_uchar() [L81] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L82] CALL assume_abort_if_not(var_1_11 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_11 <= 1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L83] var_1_12 = __VERIFIER_nondet_uchar() [L84] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L85] CALL assume_abort_if_not(var_1_12 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_12 <= 255) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L86] CALL assume_abort_if_not(var_1_12 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_12 != 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L87] var_1_13 = __VERIFIER_nondet_ulong() [L88] CALL assume_abort_if_not(var_1_13 >= 1073741823) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_13 >= 1073741823) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L89] CALL assume_abort_if_not(var_1_13 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_13 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L90] var_1_14 = __VERIFIER_nondet_ulong() [L91] CALL assume_abort_if_not(var_1_14 >= 1073741824) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1073741824, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_14 >= 1073741824) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1073741824, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L92] CALL assume_abort_if_not(var_1_14 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1073741824, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(var_1_14 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1073741824, var_1_15=-32, var_1_1=397/4, var_1_6=-1, var_1_7=16383, var_1_8=0] [L108] RET updateVariables() [L109] CALL step() [L38] unsigned long int stepLocal_1 = last_1_var_1_10; [L39] EXPR last_1_var_1_10 ^ ((((last_1_var_1_15) > (last_1_var_1_10)) ? (last_1_var_1_15) : (last_1_var_1_10))) [L39] unsigned long int stepLocal_0 = last_1_var_1_10 ^ ((((last_1_var_1_15) > (last_1_var_1_10)) ? (last_1_var_1_15) : (last_1_var_1_10))); [L40] COND FALSE !(stepLocal_0 != last_1_var_1_10) [L45] var_1_1 = var_1_9 [L47] signed short int stepLocal_2 = var_1_6; [L48] COND TRUE \read(var_1_11) [L49] COND TRUE (var_1_7 % var_1_12) >= stepLocal_2 [L50] var_1_10 = ((var_1_13 + var_1_14) - var_1_7) [L57] unsigned long int stepLocal_3 = var_1_10; [L58] COND TRUE var_1_1 <= var_1_9 [L59] COND FALSE !(stepLocal_3 > (last_1_var_1_15 + (var_1_10 + var_1_7))) [L62] var_1_15 = -5 [L109] RET step() [L110] CALL, EXPR property() [L99] EXPR last_1_var_1_10 ^ ((((last_1_var_1_15) > (last_1_var_1_10)) ? (last_1_var_1_15) : (last_1_var_1_10))) [L99-L100] return ((((last_1_var_1_10 ^ ((((last_1_var_1_15) > (last_1_var_1_10)) ? (last_1_var_1_15) : (last_1_var_1_10)))) != last_1_var_1_10) ? ((last_1_var_1_10 == (var_1_6 - (var_1_7 - var_1_8))) ? (var_1_1 == ((float) var_1_9)) : 1) : (var_1_1 == ((float) var_1_9))) && (var_1_11 ? (((var_1_7 % var_1_12) >= var_1_6) ? (var_1_10 == ((unsigned long int) ((var_1_13 + var_1_14) - var_1_7))) : (var_1_10 == ((unsigned long int) var_1_12))) : (var_1_10 == ((unsigned long int) var_1_7)))) && ((var_1_1 <= var_1_9) ? ((var_1_10 > (last_1_var_1_15 + (var_1_10 + var_1_7))) ? (var_1_15 == ((signed long int) var_1_7)) : (var_1_15 == ((signed long int) -5))) : (var_1_15 == ((signed long int) var_1_7))) ; [L110] RET, EXPR property() [L110] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=2147467264, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1073741824, var_1_15=-5, var_1_1=2, var_1_6=-1, var_1_7=16383, var_1_8=0, var_1_9=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=2147467264, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1073741824, var_1_15=-5, var_1_1=2, var_1_6=-1, var_1_7=16383, var_1_8=0, var_1_9=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 16, 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=33occurred 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, 60 NumberOfCodeBlocks, 60 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 21:16:13,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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_020d89c5-4727-4aab-9fa8-cda6295f7add/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 69e3fd0d89ff67704309f926d24cfd61e1dc768d923ba7c9bb18b30d139558fd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:16:15,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:16:15,943 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:16:15,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:16:15,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:16:16,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:16:16,007 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:16:16,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:16:16,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:16:16,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:16:16,014 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:16:16,014 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:16:16,015 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:16:16,016 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:16:16,017 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:16:16,017 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:16:16,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:16:16,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:16:16,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:16:16,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:16:16,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:16:16,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:16:16,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:16:16,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:16:16,022 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:16:16,022 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:16:16,023 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:16:16,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:16:16,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:16:16,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:16:16,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:16:16,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:16:16,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:16:16,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:16:16,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:16,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:16:16,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:16:16,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:16:16,028 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:16:16,029 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:16:16,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:16:16,029 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:16:16,029 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:16:16,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:16:16,031 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_020d89c5-4727-4aab-9fa8-cda6295f7add/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69e3fd0d89ff67704309f926d24cfd61e1dc768d923ba7c9bb18b30d139558fd [2023-11-23 21:16:16,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:16:16,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:16:16,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:16:16,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:16:16,489 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:16:16,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i [2023-11-23 21:16:19,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:20,308 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:20,309 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i [2023-11-23 21:16:20,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/data/6926d8f73/a17e1b4d52cd41a29acc2b13703c65ba/FLAGf72a9cb21 [2023-11-23 21:16:20,341 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/data/6926d8f73/a17e1b4d52cd41a29acc2b13703c65ba [2023-11-23 21:16:20,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:20,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:20,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:20,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:20,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:20,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d051dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20, skipping insertion in model container [2023-11-23 21:16:20,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:20,580 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_020d89c5-4727-4aab-9fa8-cda6295f7add/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i[915,928] [2023-11-23 21:16:20,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:20,644 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:20,659 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_020d89c5-4727-4aab-9fa8-cda6295f7add/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-18.i[915,928] [2023-11-23 21:16:20,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:20,705 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:20,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20 WrapperNode [2023-11-23 21:16:20,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:20,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:20,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:20,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:20,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,781 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2023-11-23 21:16:20,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:20,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:20,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:20,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:20,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:20,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:20,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:20,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:20,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (1/1) ... [2023-11-23 21:16:20,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:20,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:20,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:20,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:16:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:16:20,978 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:16:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:21,117 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:21,122 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:21,539 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:21,676 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:21,678 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:16:21,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:21 BoogieIcfgContainer [2023-11-23 21:16:21,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:21,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:21,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:21,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:21,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:20" (1/3) ... [2023-11-23 21:16:21,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee8b564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:21, skipping insertion in model container [2023-11-23 21:16:21,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:20" (2/3) ... [2023-11-23 21:16:21,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee8b564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:21, skipping insertion in model container [2023-11-23 21:16:21,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:21" (3/3) ... [2023-11-23 21:16:21,694 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-18.i [2023-11-23 21:16:21,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:21,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:16:21,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:21,795 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;@5778ccb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:21,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:16:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:16:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 21:16:21,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:21,820 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:21,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:21,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash -366096147, now seen corresponding path program 1 times [2023-11-23 21:16:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959210069] [2023-11-23 21:16:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:21,866 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 21:16:21,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:21,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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 21:16:21,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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 21:16:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:22,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:16:22,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-11-23 21:16:22,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:22,389 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959210069] [2023-11-23 21:16:22,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959210069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:22,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:22,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:16:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292035081] [2023-11-23 21:16:22,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:22,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:16:22,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:16:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:16:22,461 INFO L87 Difference]: Start difference. First operand has 45 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 21:16:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:22,568 INFO L93 Difference]: Finished difference Result 89 states and 153 transitions. [2023-11-23 21:16:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:16:22,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-11-23 21:16:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:22,584 INFO L225 Difference]: With dead ends: 89 [2023-11-23 21:16:22,584 INFO L226 Difference]: Without dead ends: 43 [2023-11-23 21:16:22,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 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 21:16:22,596 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:22,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:16:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-23 21:16:22,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-23 21:16:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:16:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 64 transitions. [2023-11-23 21:16:22,676 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 64 transitions. Word has length 98 [2023-11-23 21:16:22,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:22,677 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 64 transitions. [2023-11-23 21:16:22,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 21:16:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 64 transitions. [2023-11-23 21:16:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 21:16:22,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:22,687 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:22,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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 21:16:22,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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 21:16:22,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:22,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash -57785491, now seen corresponding path program 1 times [2023-11-23 21:16:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:22,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961431970] [2023-11-23 21:16:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:22,903 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 21:16:22,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:22,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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 21:16:22,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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 21:16:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:23,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:16:23,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-23 21:16:24,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:24,451 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:24,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961431970] [2023-11-23 21:16:24,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961431970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:24,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:24,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:16:24,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253961781] [2023-11-23 21:16:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:24,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:16:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:24,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:16:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:16:24,457 INFO L87 Difference]: Start difference. First operand 43 states and 64 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 21:16:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:24,972 INFO L93 Difference]: Finished difference Result 128 states and 191 transitions. [2023-11-23 21:16:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:16:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-11-23 21:16:24,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:24,977 INFO L225 Difference]: With dead ends: 128 [2023-11-23 21:16:24,977 INFO L226 Difference]: Without dead ends: 86 [2023-11-23 21:16:24,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:16:24,982 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 49 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:24,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 189 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:16:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-23 21:16:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 73. [2023-11-23 21:16:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 21:16:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 109 transitions. [2023-11-23 21:16:25,048 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 109 transitions. Word has length 98 [2023-11-23 21:16:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:25,051 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 109 transitions. [2023-11-23 21:16:25,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 21:16:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 109 transitions. [2023-11-23 21:16:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 21:16:25,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:25,063 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:25,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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)] Ended with exit code 0 [2023-11-23 21:16:25,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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 21:16:25,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:25,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash -773434598, now seen corresponding path program 1 times [2023-11-23 21:16:25,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859851595] [2023-11-23 21:16:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:25,274 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 21:16:25,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:25,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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 21:16:25,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/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 (4)] Waiting until timeout for monitored process [2023-11-23 21:16:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:25,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:16:25,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 18 proven. 252 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-23 21:16:27,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 21:16:27,913 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859851595] [2023-11-23 21:16:27,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859851595] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:27,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1295099171] [2023-11-23 21:16:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:27,922 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:16:27,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:16:27,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:16:27,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020d89c5-4727-4aab-9fa8-cda6295f7add/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-23 21:16:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:28,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:16:28,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 243 proven. 27 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-23 21:16:30,935 INFO L327 TraceCheckSpWp]: Computing backward predicates...