./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.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_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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_254f347a-6e77-47e1-882a-73b6f399a148/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 46aaa33ce2cd486d11a2ef4403e2437c8281351e94dc09a4bc73fdbba77b7fda --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:14,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:14,686 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:17:14,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:14,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:14,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:14,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:14,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:14,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:14,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:14,753 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:14,754 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:14,754 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:14,756 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:17:14,757 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:14,757 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:14,757 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:17:14,758 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:17:14,758 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:14,759 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:17:14,759 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:17:14,760 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:17:14,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:14,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:14,762 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:17:14,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:17:14,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:17:14,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:14,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:14,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:14,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:14,766 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:17:14,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:14,766 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:14,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:14,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:14,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:14,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:14,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:14,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:14,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:14,769 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:17:14,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:17:14,769 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:14,770 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:14,770 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:14,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:14,770 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_254f347a-6e77-47e1-882a-73b6f399a148/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46aaa33ce2cd486d11a2ef4403e2437c8281351e94dc09a4bc73fdbba77b7fda [2023-11-23 21:17:15,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:15,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:15,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:15,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:15,142 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:15,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i [2023-11-23 21:17:18,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:18,584 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:18,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i [2023-11-23 21:17:18,593 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/data/47afa3cbb/af4451c57cc645b6bc3b608c308cfb87/FLAGb675529b6 [2023-11-23 21:17:18,610 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/data/47afa3cbb/af4451c57cc645b6bc3b608c308cfb87 [2023-11-23 21:17:18,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:18,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:18,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:18,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:18,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:18,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:18,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec61a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18, skipping insertion in model container [2023-11-23 21:17:18,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:18,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:18,840 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_254f347a-6e77-47e1-882a-73b6f399a148/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i[915,928] [2023-11-23 21:17:18,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:18,890 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:18,905 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_254f347a-6e77-47e1-882a-73b6f399a148/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i[915,928] [2023-11-23 21:17:18,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:18,965 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:18,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18 WrapperNode [2023-11-23 21:17:18,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:18,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:18,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:18,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:18,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:18,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,014 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76 [2023-11-23 21:17:19,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:19,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:19,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:19,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:19,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,040 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:19,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:19,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:19,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:19,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (1/1) ... [2023-11-23 21:17:19,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:19,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:19,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:19,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:19,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:19,140 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:17:19,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:17:19,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:17:19,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:19,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:19,238 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:19,241 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:19,524 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:17:19,738 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:17:19,738 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:17:19,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:19 BoogieIcfgContainer [2023-11-23 21:17:19,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:17:19,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:17:19,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:17:19,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:17:19,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:18" (1/3) ... [2023-11-23 21:17:19,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1defa99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:19, skipping insertion in model container [2023-11-23 21:17:19,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:18" (2/3) ... [2023-11-23 21:17:19,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1defa99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:19, skipping insertion in model container [2023-11-23 21:17:19,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:19" (3/3) ... [2023-11-23 21:17:19,760 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-79.i [2023-11-23 21:17:19,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:17:19,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:17:19,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:17:19,881 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;@5dd1fd29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:17:19,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:17:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:17:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 21:17:19,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:19,903 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 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 21:17:19,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:19,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1366599152, now seen corresponding path program 1 times [2023-11-23 21:17:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:19,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478117564] [2023-11-23 21:17:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:19,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:20,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:17:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:17:20,396 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:17:20,405 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:17:20,406 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:17:20,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:17:20,415 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:17:20,419 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:17:20,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:17:20 BoogieIcfgContainer [2023-11-23 21:17:20,492 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:17:20,494 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:17:20,495 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:17:20,495 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:17:20,497 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:19" (3/4) ... [2023-11-23 21:17:20,501 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:17:20,503 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:17:20,504 INFO L158 Benchmark]: Toolchain (without parser) took 1889.75ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 68.3MB in the beginning and 99.6MB in the end (delta: -31.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-11-23 21:17:20,506 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 82.3MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:17:20,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.67ms. Allocated memory is still 113.2MB. Free memory was 67.9MB in the beginning and 56.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:17:20,508 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.98ms. Allocated memory is still 113.2MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:17:20,514 INFO L158 Benchmark]: Boogie Preprocessor took 35.91ms. Allocated memory is still 113.2MB. Free memory was 54.8MB in the beginning and 53.9MB in the end (delta: 962.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:17:20,514 INFO L158 Benchmark]: RCFGBuilder took 688.54ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 53.6MB in the beginning and 121.6MB in the end (delta: -68.0MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-11-23 21:17:20,516 INFO L158 Benchmark]: TraceAbstraction took 740.89ms. Allocated memory is still 151.0MB. Free memory was 120.6MB in the beginning and 100.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:17:20,517 INFO L158 Benchmark]: Witness Printer took 8.57ms. Allocated memory is still 151.0MB. Free memory was 100.7MB in the beginning and 99.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:17:20,526 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 82.3MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.67ms. Allocated memory is still 113.2MB. Free memory was 67.9MB in the beginning and 56.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.98ms. Allocated memory is still 113.2MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.91ms. Allocated memory is still 113.2MB. Free memory was 54.8MB in the beginning and 53.9MB in the end (delta: 962.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 688.54ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 53.6MB in the beginning and 121.6MB in the end (delta: -68.0MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * TraceAbstraction took 740.89ms. Allocated memory is still 151.0MB. Free memory was 120.6MB in the beginning and 100.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 8.57ms. Allocated memory is still 151.0MB. Free memory was 100.7MB in the beginning and 99.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 65, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 3.375; [L23] unsigned char var_1_2 = 0; [L24] unsigned long int var_1_3 = 4257803242; [L25] unsigned long int var_1_4 = 16; [L26] unsigned long int var_1_5 = 256; [L27] double var_1_6 = 7.375; [L28] double var_1_7 = 9.9; [L69] isInitial = 1 [L70] FCALL initially() [L71] COND TRUE 1 [L72] FCALL updateLastVariables() [L73] 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_1=27/8, var_1_3=4257803242, var_1_4=16, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L20] COND FALSE !(!cond) [L46] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_1=27/8, var_1_3=4257803242, var_1_4=16, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L47] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4257803242, var_1_4=16, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L20] COND FALSE !(!cond) [L47] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4257803242, var_1_4=16, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L48] var_1_3 = __VERIFIER_nondet_ulong() [L49] CALL assume_abort_if_not(var_1_3 >= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=16, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L20] COND FALSE !(!cond) [L49] RET assume_abort_if_not(var_1_3 >= 2147483647) VAL [isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=16, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L50] CALL assume_abort_if_not(var_1_3 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=16, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L20] COND FALSE !(!cond) [L50] RET assume_abort_if_not(var_1_3 <= 4294967295) VAL [isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=16, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L51] var_1_4 = __VERIFIER_nondet_ulong() [L52] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L20] COND FALSE !(!cond) [L52] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L53] CALL assume_abort_if_not(var_1_4 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L20] COND FALSE !(!cond) [L53] RET assume_abort_if_not(var_1_4 <= 2147483647) VAL [isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_5=256, var_1_6=59/8, var_1_7=99/10] [L54] var_1_5 = __VERIFIER_nondet_ulong() [L55] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_6=59/8, var_1_7=99/10] [L20] COND FALSE !(!cond) [L55] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_6=59/8, var_1_7=99/10] [L56] CALL assume_abort_if_not(var_1_5 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_6=59/8, var_1_7=99/10] [L20] COND FALSE !(!cond) [L56] RET assume_abort_if_not(var_1_5 <= 4294967295) VAL [isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_6=59/8, var_1_7=99/10] [L57] var_1_6 = __VERIFIER_nondet_double() [L58] CALL assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_7=99/10] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_7=99/10] [L59] var_1_7 = __VERIFIER_nondet_double() [L60] CALL assume_abort_if_not((var_1_7 >= -461168.6018427382800e+13F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 4611686.018427382800e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not((var_1_7 >= -461168.6018427382800e+13F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 4611686.018427382800e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0] [L73] RET updateVariables() [L74] CALL step() [L32] unsigned long int stepLocal_1 = var_1_5; [L33] unsigned long int stepLocal_0 = ((((var_1_3 - var_1_4)) < (var_1_5)) ? ((var_1_3 - var_1_4)) : (var_1_5)); [L34] COND FALSE !(stepLocal_0 <= 50u) [L41] var_1_1 = var_1_7 [L74] RET step() [L75] CALL, EXPR property() [L65-L66] return ((((((var_1_3 - var_1_4)) < (var_1_5)) ? ((var_1_3 - var_1_4)) : (var_1_5))) <= 50u) ? (var_1_2 ? ((var_1_3 > var_1_5) ? (var_1_1 == ((double) (var_1_6 + var_1_7))) : 1) : 1) : (var_1_1 == ((double) var_1_7)) ; [L75] RET, EXPR property() [L75] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_5=4294967295, var_1_7=27/8] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=27/8, var_1_2=1, var_1_3=4294967295, var_1_4=0, var_1_5=4294967295, var_1_7=27/8] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 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 21:17:20,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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_254f347a-6e77-47e1-882a-73b6f399a148/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 46aaa33ce2cd486d11a2ef4403e2437c8281351e94dc09a4bc73fdbba77b7fda --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:23,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:23,622 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:17:23,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:23,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:23,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:23,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:23,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:23,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:23,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:23,688 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:23,689 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:23,690 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:23,690 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:23,691 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:23,692 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:23,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:23,694 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:23,694 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:17:23,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:17:23,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:23,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:23,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:23,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:23,698 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:17:23,699 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:17:23,700 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:17:23,700 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:17:23,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:23,701 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:23,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:23,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:17:23,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:23,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:23,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:23,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:23,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:23,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:23,705 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:17:23,705 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:17:23,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:23,706 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:23,707 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:23,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:23,707 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_254f347a-6e77-47e1-882a-73b6f399a148/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46aaa33ce2cd486d11a2ef4403e2437c8281351e94dc09a4bc73fdbba77b7fda [2023-11-23 21:17:24,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:24,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:24,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:24,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:24,166 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:24,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i [2023-11-23 21:17:27,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:27,604 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:27,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i [2023-11-23 21:17:27,616 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/data/e9be81cf4/93a6a8ed9b1a407ea289999af7cbf4d6/FLAG641340f19 [2023-11-23 21:17:27,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/data/e9be81cf4/93a6a8ed9b1a407ea289999af7cbf4d6 [2023-11-23 21:17:27,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:27,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:27,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:27,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:27,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:27,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:27" (1/1) ... [2023-11-23 21:17:27,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42bdbf2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:27, skipping insertion in model container [2023-11-23 21:17:27,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:27" (1/1) ... [2023-11-23 21:17:27,681 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:27,867 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_254f347a-6e77-47e1-882a-73b6f399a148/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i[915,928] [2023-11-23 21:17:27,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:27,955 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:27,984 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_254f347a-6e77-47e1-882a-73b6f399a148/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-79.i[915,928] [2023-11-23 21:17:28,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:28,026 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:28,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28 WrapperNode [2023-11-23 21:17:28,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:28,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:28,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:28,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:28,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,093 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76 [2023-11-23 21:17:28,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:28,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:28,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:28,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:28,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:28,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:28,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:28,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:28,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (1/1) ... [2023-11-23 21:17:28,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:28,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:28,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:28,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:17:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:17:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:17:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:28,395 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:28,400 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:29,198 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:17:29,281 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:17:29,282 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:17:29,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:29 BoogieIcfgContainer [2023-11-23 21:17:29,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:17:29,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:17:29,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:17:29,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:17:29,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:27" (1/3) ... [2023-11-23 21:17:29,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f877dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:29, skipping insertion in model container [2023-11-23 21:17:29,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:28" (2/3) ... [2023-11-23 21:17:29,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f877dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:29, skipping insertion in model container [2023-11-23 21:17:29,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:29" (3/3) ... [2023-11-23 21:17:29,324 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-79.i [2023-11-23 21:17:29,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:17:29,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:17:29,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:17:29,485 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;@744ef177, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:17:29,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:17:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:17:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:17:29,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:29,507 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:29,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:29,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1845538419, now seen corresponding path program 1 times [2023-11-23 21:17:29,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:29,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931998001] [2023-11-23 21:17:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:29,528 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 21:17:29,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:29,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:29,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:29,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:17:29,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-23 21:17:29,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:29,874 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:29,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931998001] [2023-11-23 21:17:29,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931998001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:29,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:29,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:17:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163360751] [2023-11-23 21:17:29,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:29,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:17:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:17:29,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:17:29,931 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 21:17:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:30,334 INFO L93 Difference]: Finished difference Result 61 states and 102 transitions. [2023-11-23 21:17:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:17:30,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 62 [2023-11-23 21:17:30,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:30,353 INFO L225 Difference]: With dead ends: 61 [2023-11-23 21:17:30,353 INFO L226 Difference]: Without dead ends: 30 [2023-11-23 21:17:30,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 61 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 21:17:30,361 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:30,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:17:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-23 21:17:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-23 21:17:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:17:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 42 transitions. [2023-11-23 21:17:30,400 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 42 transitions. Word has length 62 [2023-11-23 21:17:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:30,401 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 42 transitions. [2023-11-23 21:17:30,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 21:17:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2023-11-23 21:17:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:17:30,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:30,405 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:30,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:30,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:30,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:30,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:30,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1031786121, now seen corresponding path program 1 times [2023-11-23 21:17:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:30,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219647234] [2023-11-23 21:17:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:30,614 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 21:17:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:30,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:30,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:30,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:17:30,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-23 21:17:40,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:40,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:40,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219647234] [2023-11-23 21:17:40,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219647234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:40,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:40,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:17:40,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037422714] [2023-11-23 21:17:40,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:40,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:17:40,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:17:40,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:17:40,387 INFO L87 Difference]: Start difference. First operand 30 states and 42 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 21:17:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:43,707 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2023-11-23 21:17:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 21:17:43,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 62 [2023-11-23 21:17:43,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:43,711 INFO L225 Difference]: With dead ends: 51 [2023-11-23 21:17:43,712 INFO L226 Difference]: Without dead ends: 49 [2023-11-23 21:17:43,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:17:43,714 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 56 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:43,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 88 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 21:17:43,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-23 21:17:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2023-11-23 21:17:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:17:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2023-11-23 21:17:43,732 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 62 [2023-11-23 21:17:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:43,733 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2023-11-23 21:17:43,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 21:17:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2023-11-23 21:17:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-23 21:17:43,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:43,735 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:43,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:43,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:43,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:43,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:43,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1906016461, now seen corresponding path program 1 times [2023-11-23 21:17:43,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:43,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497527338] [2023-11-23 21:17:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:43,945 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 21:17:43,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:43,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:43,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:44,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:17:44,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-23 21:17:49,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:49,239 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:17:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497527338] [2023-11-23 21:17:49,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497527338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:49,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:49,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:17:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958794869] [2023-11-23 21:17:49,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:49,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:17:49,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:17:49,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:17:49,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:17:49,243 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 21:17:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:50,820 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-11-23 21:17:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:17:50,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 63 [2023-11-23 21:17:50,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:50,825 INFO L225 Difference]: With dead ends: 58 [2023-11-23 21:17:50,825 INFO L226 Difference]: Without dead ends: 56 [2023-11-23 21:17:50,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:17:50,827 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:50,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 158 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 21:17:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-23 21:17:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2023-11-23 21:17:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:17:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2023-11-23 21:17:50,843 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 63 [2023-11-23 21:17:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:50,844 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2023-11-23 21:17:50,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 21:17:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2023-11-23 21:17:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 21:17:50,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:50,846 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:50,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:51,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:51,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:51,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1052221900, now seen corresponding path program 1 times [2023-11-23 21:17:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:17:51,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415063579] [2023-11-23 21:17:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:51,055 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 21:17:51,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:17:51,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 21:17:51,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254f347a-6e77-47e1-882a-73b6f399a148/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 (5)] Waiting until timeout for monitored process [2023-11-23 21:17:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:51,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:17:51,254 INFO L285 TraceCheckSpWp]: Computing forward predicates...