./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.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_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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_083009a4-420f-4634-90fe-8a2ebf377b79/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 2fa446d8c93aa6747c2c2e323426d1b7be32d5c9dc6e4b183922bd1055e01248 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:28:21,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:28:21,629 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:28:21,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:28:21,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:28:21,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:28:21,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:28:21,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:28:21,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:28:21,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:28:21,684 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:28:21,685 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:28:21,686 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:28:21,688 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:28:21,688 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:28:21,689 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:28:21,689 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:28:21,690 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:28:21,690 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:28:21,691 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:28:21,691 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:28:21,692 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:28:21,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:28:21,694 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:28:21,694 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:28:21,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:28:21,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:28:21,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:28:21,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:28:21,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:28:21,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:28:21,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:28:21,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:28:21,699 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:28:21,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:28:21,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:28:21,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:28:21,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:21,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:28:21,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:28:21,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:28:21,702 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:28:21,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:28:21,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:28:21,703 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:28:21,703 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:28:21,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:28:21,704 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_083009a4-420f-4634-90fe-8a2ebf377b79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fa446d8c93aa6747c2c2e323426d1b7be32d5c9dc6e4b183922bd1055e01248 [2023-11-23 21:28:22,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:28:22,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:28:22,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:28:22,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:28:22,105 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:28:22,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i [2023-11-23 21:28:25,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:28:25,439 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:28:25,440 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i [2023-11-23 21:28:25,452 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/data/e50570305/ffd7986b560b49448dc1c5c430153fb7/FLAG928c13561 [2023-11-23 21:28:25,475 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/data/e50570305/ffd7986b560b49448dc1c5c430153fb7 [2023-11-23 21:28:25,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:28:25,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:28:25,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:25,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:28:25,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:28:25,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f6e42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25, skipping insertion in model container [2023-11-23 21:28:25,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,536 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:28:25,760 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_083009a4-420f-4634-90fe-8a2ebf377b79/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i[915,928] [2023-11-23 21:28:25,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:25,825 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:28:25,839 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_083009a4-420f-4634-90fe-8a2ebf377b79/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i[915,928] [2023-11-23 21:28:25,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:25,872 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:28:25,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25 WrapperNode [2023-11-23 21:28:25,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:25,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:25,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:28:25,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:28:25,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,932 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 85 [2023-11-23 21:28:25,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:25,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:28:25,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:28:25,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:28:25,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:28:25,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:28:25,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:28:25,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:28:25,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (1/1) ... [2023-11-23 21:28:25,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:26,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:26,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:28:26,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:28:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:28:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:28:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:28:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:28:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:28:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:28:26,136 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:28:26,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:28:26,362 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:28:26,486 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:28:26,487 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:28:26,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:26 BoogieIcfgContainer [2023-11-23 21:28:26,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:28:26,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:28:26,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:28:26,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:28:26,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:28:25" (1/3) ... [2023-11-23 21:28:26,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f63e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:26, skipping insertion in model container [2023-11-23 21:28:26,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:25" (2/3) ... [2023-11-23 21:28:26,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f63e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:26, skipping insertion in model container [2023-11-23 21:28:26,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:26" (3/3) ... [2023-11-23 21:28:26,499 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-71.i [2023-11-23 21:28:26,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:28:26,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:28:26,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:28:26,569 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;@b903872, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:28:26,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:28:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:28:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 21:28:26,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:26,582 INFO L195 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:26,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:26,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash -850257494, now seen corresponding path program 1 times [2023-11-23 21:28:26,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3927517] [2023-11-23 21:28:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:28:26,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:28:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:28:26,975 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:28:26,978 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:28:26,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:28:26,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:28:26,986 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:28:26,990 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:28:27,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:28:27 BoogieIcfgContainer [2023-11-23 21:28:27,037 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:28:27,038 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:28:27,038 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:28:27,038 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:28:27,039 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:26" (3/4) ... [2023-11-23 21:28:27,041 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:28:27,042 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:28:27,043 INFO L158 Benchmark]: Toolchain (without parser) took 1560.16ms. Allocated memory is still 151.0MB. Free memory was 108.9MB in the beginning and 53.2MB in the end (delta: 55.8MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-11-23 21:28:27,044 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:28:27,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.19ms. Allocated memory is still 151.0MB. Free memory was 108.3MB in the beginning and 97.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:28:27,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.53ms. Allocated memory is still 151.0MB. Free memory was 97.0MB in the beginning and 95.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:28:27,046 INFO L158 Benchmark]: Boogie Preprocessor took 32.69ms. Allocated memory is still 151.0MB. Free memory was 95.0MB in the beginning and 93.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:28:27,047 INFO L158 Benchmark]: RCFGBuilder took 513.43ms. Allocated memory is still 151.0MB. Free memory was 93.6MB in the beginning and 76.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:28:27,048 INFO L158 Benchmark]: TraceAbstraction took 545.30ms. Allocated memory is still 151.0MB. Free memory was 76.0MB in the beginning and 53.2MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:28:27,048 INFO L158 Benchmark]: Witness Printer took 4.76ms. Allocated memory is still 151.0MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:28:27,058 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.19ms. Allocated memory is still 151.0MB. Free memory was 108.3MB in the beginning and 97.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.53ms. Allocated memory is still 151.0MB. Free memory was 97.0MB in the beginning and 95.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.69ms. Allocated memory is still 151.0MB. Free memory was 95.0MB in the beginning and 93.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.43ms. Allocated memory is still 151.0MB. Free memory was 93.6MB in the beginning and 76.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 545.30ms. Allocated memory is still 151.0MB. Free memory was 76.0MB in the beginning and 53.2MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.76ms. Allocated memory is still 151.0MB. Free memory is still 53.2MB. 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 69, overapproximation of someBinaryDOUBLEComparisonOperation at line 40, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 31.25; [L23] unsigned char var_1_2 = 0; [L24] unsigned char var_1_3 = 0; [L25] float var_1_4 = 0.25; [L26] float var_1_5 = 10.5; [L27] unsigned char var_1_6 = 16; [L28] double var_1_7 = 10.75; [L29] double var_1_8 = 2.675; [L30] unsigned char var_1_9 = 128; [L31] unsigned char var_1_10 = 2; [L73] isInitial = 1 [L74] FCALL initially() [L75] COND TRUE 1 [L76] FCALL updateLastVariables() [L77] CALL updateVariables() [L45] var_1_2 = __VERIFIER_nondet_uchar() [L46] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_3=0, var_1_4=1/4, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L20] COND FALSE !(!cond) [L46] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_3=0, var_1_4=1/4, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L47] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=0, var_1_4=1/4, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L20] COND FALSE !(!cond) [L47] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=0, var_1_4=1/4, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L48] var_1_3 = __VERIFIER_nondet_uchar() [L49] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_4=1/4, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L20] COND FALSE !(!cond) [L49] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_4=1/4, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L50] CALL assume_abort_if_not(var_1_3 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_4=1/4, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L20] COND FALSE !(!cond) [L50] RET assume_abort_if_not(var_1_3 <= 1) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_4=1/4, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L51] var_1_4 = __VERIFIER_nondet_float() [L52] CALL assume_abort_if_not((var_1_4 >= -461168.6018427382800e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L20] COND FALSE !(!cond) [L52] RET assume_abort_if_not((var_1_4 >= -461168.6018427382800e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_5=21/2, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L53] var_1_5 = __VERIFIER_nondet_float() [L54] CALL assume_abort_if_not((var_1_5 >= -461168.6018427382800e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 4611686.018427382800e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L20] COND FALSE !(!cond) [L54] RET assume_abort_if_not((var_1_5 >= -461168.6018427382800e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 4611686.018427382800e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_7=43/4, var_1_8=107/40, var_1_9=128] [L55] var_1_7 = __VERIFIER_nondet_double() [L56] CALL assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_8=107/40, var_1_9=128] [L20] COND FALSE !(!cond) [L56] RET assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_8=107/40, var_1_9=128] [L57] var_1_8 = __VERIFIER_nondet_double() [L58] CALL assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=128] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=128] [L59] var_1_9 = __VERIFIER_nondet_uchar() [L60] CALL assume_abort_if_not(var_1_9 >= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not(var_1_9 >= 127) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] [L61] CALL assume_abort_if_not(var_1_9 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_9 <= 254) VAL [isInitial=1, var_1_10=2, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] [L62] var_1_10 = __VERIFIER_nondet_uchar() [L63] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] [L64] CALL assume_abort_if_not(var_1_10 <= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=127, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_10 <= 127) VAL [isInitial=1, var_1_10=127, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] [L77] RET updateVariables() [L78] CALL step() [L35] COND TRUE \read(var_1_2) [L36] COND TRUE \read(var_1_3) [L37] var_1_1 = (var_1_4 + var_1_5) [L40] COND TRUE (var_1_7 - var_1_8) >= (var_1_1 + var_1_4) [L41] var_1_6 = (var_1_9 - var_1_10) [L78] RET step() [L79] CALL, EXPR property() [L69-L70] return (var_1_2 ? (var_1_3 ? (var_1_1 == ((float) (var_1_4 + var_1_5))) : 1) : 1) && (((var_1_7 - var_1_8) >= (var_1_1 + var_1_4)) ? (var_1_6 == ((unsigned char) (var_1_9 - var_1_10))) : 1) ; [L79] RET, EXPR property() [L79] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=127, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=127, var_1_1=125/4, var_1_2=1, var_1_3=1, var_1_6=16, var_1_9=143] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 12, 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=29occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 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 21:28:27,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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_083009a4-420f-4634-90fe-8a2ebf377b79/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 2fa446d8c93aa6747c2c2e323426d1b7be32d5c9dc6e4b183922bd1055e01248 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:28:29,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:28:29,833 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:28:29,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:28:29,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:28:29,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:28:29,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:28:29,900 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:28:29,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:28:29,906 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:28:29,907 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:28:29,907 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:28:29,908 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:28:29,910 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:28:29,910 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:28:29,911 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:28:29,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:28:29,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:28:29,913 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:28:29,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:28:29,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:28:29,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:28:29,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:28:29,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:28:29,915 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:28:29,916 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:28:29,916 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:28:29,917 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:28:29,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:28:29,917 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:28:29,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:28:29,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:28:29,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:28:29,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:28:29,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:29,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:28:29,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:28:29,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:28:29,921 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:28:29,922 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:28:29,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:28:29,923 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:28:29,923 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:28:29,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:28:29,924 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_083009a4-420f-4634-90fe-8a2ebf377b79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fa446d8c93aa6747c2c2e323426d1b7be32d5c9dc6e4b183922bd1055e01248 [2023-11-23 21:28:30,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:28:30,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:28:30,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:28:30,368 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:28:30,368 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:28:30,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i [2023-11-23 21:28:33,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:28:33,773 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:28:33,773 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i [2023-11-23 21:28:33,782 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/data/0b5be7a88/209f5bab73414924bde04bc025aba838/FLAGbc5f1ba17 [2023-11-23 21:28:33,798 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/data/0b5be7a88/209f5bab73414924bde04bc025aba838 [2023-11-23 21:28:33,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:28:33,802 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:28:33,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:33,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:28:33,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:28:33,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:33" (1/1) ... [2023-11-23 21:28:33,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe2b091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:33, skipping insertion in model container [2023-11-23 21:28:33,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:33" (1/1) ... [2023-11-23 21:28:33,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:28:33,987 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_083009a4-420f-4634-90fe-8a2ebf377b79/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i[915,928] [2023-11-23 21:28:34,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:34,070 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:28:34,088 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_083009a4-420f-4634-90fe-8a2ebf377b79/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-71.i[915,928] [2023-11-23 21:28:34,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:34,135 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:28:34,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34 WrapperNode [2023-11-23 21:28:34,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:34,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:34,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:28:34,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:28:34,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,199 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 85 [2023-11-23 21:28:34,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:34,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:28:34,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:28:34,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:28:34,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:28:34,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:28:34,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:28:34,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:28:34,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (1/1) ... [2023-11-23 21:28:34,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:34,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:34,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:28:34,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:28:34,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:28:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:28:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:28:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:28:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:28:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:28:34,444 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:28:34,446 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:28:38,716 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:28:38,755 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:28:38,755 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:28:38,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:38 BoogieIcfgContainer [2023-11-23 21:28:38,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:28:38,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:28:38,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:28:38,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:28:38,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:28:33" (1/3) ... [2023-11-23 21:28:38,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54aa9f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:38, skipping insertion in model container [2023-11-23 21:28:38,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:34" (2/3) ... [2023-11-23 21:28:38,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54aa9f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:38, skipping insertion in model container [2023-11-23 21:28:38,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:38" (3/3) ... [2023-11-23 21:28:38,765 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-71.i [2023-11-23 21:28:38,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:28:38,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:28:38,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:28:38,841 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;@1357ed46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:28:38,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:28:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:28:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 21:28:38,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:38,858 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:38,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:38,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash 308168511, now seen corresponding path program 1 times [2023-11-23 21:28:38,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:28:38,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306216187] [2023-11-23 21:28:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:38,879 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 21:28:38,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:28:38,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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 21:28:38,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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 21:28:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:39,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:28:39,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-23 21:29:05,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:05,673 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:29:05,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306216187] [2023-11-23 21:29:05,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306216187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:05,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:05,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:29:05,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548775669] [2023-11-23 21:29:05,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:05,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:29:05,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:29:05,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:29:05,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:29:05,733 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:29:07,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:29:08,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:29:08,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:08,967 INFO L93 Difference]: Finished difference Result 80 states and 134 transitions. [2023-11-23 21:29:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:29:08,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2023-11-23 21:29:08,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:08,982 INFO L225 Difference]: With dead ends: 80 [2023-11-23 21:29:08,982 INFO L226 Difference]: Without dead ends: 45 [2023-11-23 21:29:08,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:09,002 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:09,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 132 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 21:29:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-23 21:29:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2023-11-23 21:29:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:29:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2023-11-23 21:29:09,073 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 75 [2023-11-23 21:29:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:09,079 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2023-11-23 21:29:09,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:29:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2023-11-23 21:29:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 21:29:09,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:09,090 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:09,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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 21:29:09,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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 21:29:09,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:09,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash 308228093, now seen corresponding path program 1 times [2023-11-23 21:29:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:29:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636647961] [2023-11-23 21:29:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:09,313 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 21:29:09,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:29:09,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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 21:29:09,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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 21:29:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:09,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:29:09,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:29:15,533 WARN L854 $PredicateComparison]: unable to prove that (and (not (fp.geq (fp.sub c_currentRoundingMode c_~var_1_7~0 c_~var_1_8~0) ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode c_~var_1_1~0 c_~var_1_4~0)))) (= (_ bv0 8) c_~var_1_2~0)) is different from false [2023-11-23 21:29:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-23 21:29:25,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:29:25,809 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:29:25,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636647961] [2023-11-23 21:29:25,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636647961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:25,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:25,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:29:25,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839325874] [2023-11-23 21:29:25,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:25,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:29:25,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:29:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:29:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-23 21:29:25,815 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:29:27,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:29:28,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:29:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:28,624 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2023-11-23 21:29:28,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:29:28,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2023-11-23 21:29:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:28,628 INFO L225 Difference]: With dead ends: 44 [2023-11-23 21:29:28,628 INFO L226 Difference]: Without dead ends: 42 [2023-11-23 21:29:28,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-23 21:29:28,630 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:28,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 159 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 27 Unchecked, 2.8s Time] [2023-11-23 21:29:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-23 21:29:28,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2023-11-23 21:29:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:29:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2023-11-23 21:29:28,641 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 75 [2023-11-23 21:29:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:28,642 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2023-11-23 21:29:28,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 21:29:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2023-11-23 21:29:28,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 21:29:28,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:28,645 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:28,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:29:28,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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 21:29:28,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:28,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:28,854 INFO L85 PathProgramCache]: Analyzing trace with hash 724177073, now seen corresponding path program 1 times [2023-11-23 21:29:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:29:28,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792104444] [2023-11-23 21:29:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:28,855 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 21:29:28,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:29:28,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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 21:29:28,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083009a4-420f-4634-90fe-8a2ebf377b79/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 21:29:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:29,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:29:29,149 INFO L285 TraceCheckSpWp]: Computing forward predicates...